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post #1 of 126 Old 10-20-2018, 08:03 PM Thread Starter
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What do you guys think is a great turbo for a car that has a TFS top end kit and stock block and F cam .with all that I'm thinking the 67 may not be enough on the upper RPMS and I'm sure hooking up with such a fast spooling turbo will make it worse was thinking a there 70 or going up to there 76.So anyone have any ideas ? Thanks.

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post #2 of 126 Old 10-20-2018, 08:05 PM Thread Starter
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Stock block as well just dont want to small or 2 big .

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post #3 of 126 Old 10-20-2018, 09:42 PM
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How much power you wanting? What trans, gearing, etc?
I'd personally go on the smaller side of turbo size to keep it a fun street car. Too large and you won't have much fun unless you run a lot of stall.

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post #4 of 126 Old 10-20-2018, 09:57 PM Thread Starter
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For now 373 gears might change them out 2 327s rear end is built with 31 spline axels mega bites 7 way adjustable shocks pretty much the weak points are stock low mile short block stock t5 for now that will get change 2 down the road if it breaks it will be even faster keeping a.c in car.
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post #5 of 126 Old 10-20-2018, 09:59 PM Thread Starter
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500 to 570 ish much after that I'm sure she may crack like a egg.
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post #6 of 126 Old 10-21-2018, 07:55 AM
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If it stil the stock displacement I feel 70mm works great. I run the base On3 70mm and itís a blast. I thought about switching over to the precesion 7075 just because itís a better quality unit but I feel itís pretty close to where I want to be. The TFS top end kit on top of the stock bottom end will work well with any of the turbos you mentioned. Just depends on what your looking for. Spool quickly down low or pull like a freight train past 6k? I also hear that the ceramic ball bearing turbos compared to the journal spool quicker. I believe there are a lot of variables to make it spool and youíll always wonder if it could be ĒbetterĒ lol

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post #7 of 126 Old 10-21-2018, 09:30 AM
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I have similar engine set up with an On3 70mm properly tuned the car drives like any 12 sec NA car, accelerates like a 10 sec NA 408. Hard to tell it is not NA when ripping through the gears. It makes 11lbs on a 9 lb spring.
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post #8 of 126 Old 10-21-2018, 09:39 AM Thread Starter
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Thanks for your input ya that's why I asked the ? I feel if it was stock heads sure go the a 67 ball bearing .But since it's got good head flow then a the basic 70 might be the perfect size sure it may be a little slower.But the 70 mill might make it all around a blast I don't know if they offer that turbo in the ball bering I do think you can get a 72 like $600. So not sure if that size and price for a 0n 3 turbo is worth it but the 70 seems to be a great size if you have a top end kit and since I have a F cam again that should help.
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post #9 of 126 Old 10-21-2018, 09:42 AM Thread Starter
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That sounds great TRX 250r.Is yours journal or ball bering?
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post #10 of 126 Old 10-21-2018, 10:06 AM
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That sounds great TRX 250r.Is yours journal or ball bering?
It is the standard journal unit. I bought the car built so I can't claim the set up. What I do know it has a stock rod and crank fresh 306 with unknown pistons. Windsor Jr iron heads and cobra intake. 42lb injectors and cam unknown. Cam lopes at idle like between an E or F and with single exhaust it sounds decent. Sct 4 bank switch chip. Fuel pump in tank is not extremely loud and again unkown. Tremec 3550 and I am pretty sure 3.73 gears. I didn't get a chance to get it to the track but my butt dyno says high 6's in the 1/8th and high 10's in the 1/4. Then a few month's ago after getting a few things sorted, it split the stock fuel rail cross over behind the intake and caught fire. (I posted a short thread on that). You know the bug that bites you when you have funds to go faster.....I bought a dart block 331 from a guy on here near me and habe been saving to fix the damage to the car and make upgrades over winter. Probably should have just put it back to where it was since I had been out of the game for a long time because it was running great and was plenty quick for an occasional driver. Besides I have another fox to finish after it, set up for Auto X.

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post #11 of 126 Old 10-21-2018, 10:28 AM Thread Starter
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Wow great write up thanks for the info and sorry for bug that caught you .ya your set up sounds exactly what I'm hopeing to do I'm worried 42 pounds inj will be enough I have e85 on every street corner so thinking about selling my 42s and going with 60s as far as tuneing goes I will have to travel or just bite the bullet and go with a pro-m engine management that may help in long run to keep stock block firing good.if she blows then it's going dart and twins and will stop when I can not have a.c .But my hope is to just have a fun 10 street car .But yours sounds just the way I want it.Did you run e 85 not that you had 2 with that boost leval ?
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post #12 of 126 Old 10-21-2018, 10:34 AM
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Personally Iíd go 80lb for e85. Iím probably going to go 60 or 80 on pump gas with a stock block lol. The 42lb injectors were enough until I turned the boost up. Around 9-10 lbs it was fine after that they are working real hard.


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Stock bottom end, gt40x, Ported GT40 tubular, On3 turbo, TKO, 5 lug, 4 wheel disc, etc
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post #13 of 126 Old 10-21-2018, 10:44 AM Thread Starter
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Such great info thank you!
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post #14 of 126 Old 10-21-2018, 04:42 PM Thread Starter
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So it seems the the best street turbo in a budget is if you have stock motor or real close upgrade to the 67 ball bering. If you have a top end kit or close just get the journal bering get some 60 or 80 if runing E85 and save your cash for a new block because some day you will need it.
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post #15 of 126 Old 10-26-2018, 04:49 PM
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i had a comp .68ar ball bearing billit wheel on a similar setup. it felt great and had a lot of room to grow

i see you are also in MN! i was running my set up on the pro m efi as well
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post #16 of 126 Old 10-27-2018, 08:36 PM Thread Starter
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What part are you in mn ? What turbo set up are you going with now?
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post #17 of 126 Old 10-28-2018, 10:22 PM
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Im in the south east metro. The new turbos are comp 58/58 oil-less twins. going on a dart block 363
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post #18 of 126 Old 10-28-2018, 11:01 PM Thread Starter
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Go big at home your not playing good for you!
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post #19 of 126 Old 10-28-2018, 11:08 PM
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haha you know it https://i.imgur.com/znnlS1L.jpg hmm that picture wont show up for some reason
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post #20 of 126 Old 10-29-2018, 11:40 PM Thread Starter
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Nice looks very impressive
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post #21 of 126 Old 10-30-2018, 01:22 PM
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Nice looks very impressive
have you decided what rout you want to go yet? the turbo i was running was plenty for the stock block and more if i wanted. i ran it at low boost and was making 400 at the wheels like nothing. the one thing i would do is get the ball bearing and billet wheel if its an option
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post #22 of 126 Old 10-30-2018, 06:01 PM Thread Starter
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On the 67 you can not sure on the 70 I whould have to call them on that .Some say 70 some say 67 I know with the f cam and tfs top end kit and 373s the thing will spool very fast I dont see how it will even even hook up.Thats why I was allmost thinking just stay with a slower 70 as it may get the car rolling to be able to hook up better .
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post #23 of 126 Old 10-30-2018, 06:29 PM
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what the ultimate goal of the car? like a 1/4 car? daily driver? I cant imagine not wanting a turbo to be in boost asap as these cars dont rev THAT high anyway. what is your goal power wise? generally you would want a turbo that will achieve your goal and have a little room to grow if you think you need it, if you go with a bigger turbo you may have more potential top end but it costs at the bottom.
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post #24 of 126 Old 10-30-2018, 09:50 PM Thread Starter
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It will be my summer driver I dont really go 2 the track as I dont have time to drive to rock maybe grove.but mostly back and forth to work and jumping on the hwy .I figure with the pro M the stock block might last a little while so ya 500 on e 85 is good .If she blows its geting a dart twin turbo with a auto .So for now just a street car so maybe a 67 ball bearing might just be the best setup.
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post #25 of 126 Old 11-01-2018, 08:34 PM
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500 to 570 ish much after that I'm sure she may crack like a egg.
Good luck, I wasnít able to make that on 93 pump with a 351 and 7065, trickflow heads, small tfs 1.

If I had the option to go back and only upgrade the head unit I would have gone with a borgwarner.
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post #26 of 126 Old 11-02-2018, 08:00 PM Thread Starter
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Interesting thanks for your input .well I will be putting in E-85 so your saying get there so called free turbo and go to what turbo size and brand even though your 351 I'm 302.
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post #27 of 126 Old 11-02-2018, 10:13 PM
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Sorry, maybe I didn't understand. Your saying you couldn't break 500 hp with a 351 and a turbo? I ran 6 lbs of boost on a 302 and pushed 400 easy... Maybe I missed something
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post #28 of 126 Old 11-02-2018, 10:58 PM
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Sorry, maybe I didn't understand. Your saying you couldn't break 500 hp with a 351 and a turbo? I ran 6 lbs of boost on a 302 and pushed 400 easy... Maybe I missed something
Sadly that is correct.

I have a local ####### tuner that mainly focuses on foxbody builds.

My car has a 94 roller 351w, trickflow 170, trickflow stage 1 cam, gt40 tubular.
On3 7065 turbo, th400, etc etc etc

Tuner was scared to go above 10lbs on pump gas and we only made 480 on pump 93.

Got really pissed and am going to try my best to get a respectable number.

I have a 7875 sitting here on desk and am trying to install my Holley Hp.
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post #29 of 126 Old 11-02-2018, 11:01 PM
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Interesting thanks for your input .well I will be putting in E-85 so your saying get there so called free turbo and go to what turbo size and brand even though your 351 I'm 302.
Your option to go e85 is a huge advantage over me staying with 93. You should be easily able to crack your block with a good tune, that turbo, and supporting mods.

How expensive of a turbo do you want?

I went with a budget build with on3 and just upgraded the wastegate to tial and I recently upgraded my turbo yet to be installed.

Do you really think the billet 67 would be much of an upgrade over the base 70mm journal for street use? Idk man.
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post #30 of 126 Old 11-03-2018, 12:33 PM
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Your option to go e85 is a huge advantage over me staying with 93. You should be easily able to crack your block with a good tune, that turbo, and supporting mods.

How expensive of a turbo do you want?

I went with a budget build with on3 and just upgraded the wastegate to tial and I recently upgraded my turbo yet to be installed.

Do you really think the billet 67 would be much of an upgrade over the base 70mm journal for street use? Idk man.
I would say it might be based off your numbers. Something with your combo seems off, I could have surpassed 500 without much issue (using pro m Efi). My turbo was by no means cheap, but why skimp on something when it can fill your need for 400hp now and 600 when you want it? Besides that, it will hold resale value later if you opt to upgrade. I recently sold my turbo setup for 2600$ after using it a few seasons so I took a loss but not much. I'm not ragging on your build, but those numbers seem like a low spot to get stuck imo.

THere are some things I don't mind going cheap on, but the thing spinning at god knows what rpm that's shoving #### into my engine isn't one of them
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post #31 of 126 Old 11-03-2018, 01:43 PM Thread Starter
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If the block was not the limit I whould spend alot on a turbo but since I'm needing about 150 ta 200 and the block goes I'm not going back to a 67 at that point.Worst case I put the 67 on she spins the crap out of the tires and I swap in some 327 rear gears .
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post #32 of 126 Old 11-03-2018, 04:54 PM
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I would say it might be based off your numbers. Something with your combo seems off, I could have surpassed 500 without much issue (using pro m Efi). My turbo was by no means cheap, but why skimp on something when it can fill your need for 400hp now and 600 when you want it? Besides that, it will hold resale value later if you opt to upgrade. I recently sold my turbo setup for 2600$ after using it a few seasons so I took a loss but not much. I'm not ragging on your build, but those numbers seem like a low spot to get stuck imo.

THere are some things I don't mind going cheap on, but the thing spinning at god knows what rpm that's shoving #### into my engine isn't one of them
I agree and am okay admitting my faults with the engine. As a matter of fact, nobody I know that even asks about the car when they see or hear it believes the number is that low from the most respected tuner in the area on pump 93 but I canít stand up for the tuner anymore because he is an #######.

My tune was so far off I was seeing mid 16s afr in boost. I wasted a lot of money and stress going with this ####### tuner and I ended up buying a Holley HP to install and attempt to startup tune myself.

I agree with you on your turbo costs and being okay without skimping. For me, the previous owner built the car around low weight and a budget build with the on3. If I ended up going big money on the turbo and everything else I would have to basically start fresh. I was saving my money for either a dart block to freshen things up or consider some good flowing AFR or 11R heads with fti cam that would fit my combo better.

I have an on3 7875 sitting here new in box that I paid roughly $360 for and I may make the switch if I cans get this Holley HP up and running.

I would gladly consider an upgrade like a borgwarner if I wasnít having these on3 turbos currently working. Heck, the turbo is making all the power and I will likely be spending more money on a dual sync distributor for the Holley than the turbo head unit.
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post #33 of 126 Old 11-03-2018, 05:52 PM
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I’m finally getting my car back this week, so hit me up with questions about the Holley install. I’ll be able to use my car as a reference and send you pics and info as needed.
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Stock block 306, V1 T-trim, AFM B-451 cam, TFS Twisted Wedge, Holley Systemax, A1000, Snow Meth, TKO 600, Team Z, Strange, MM, Lakewood and Moser helps me go forward fast.
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post #34 of 126 Old 11-03-2018, 07:46 PM
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I agree and am okay admitting my faults with the engine. As a matter of fact, nobody I know that even asks about the car when they see or hear it believes the number is that low from the most respected tuner in the area on pump 93 but I canít stand up for the tuner anymore because he is an #######.

My tune was so far off I was seeing mid 16s afr in boost. I wasted a lot of money and stress going with this ####### tuner and I ended up buying a Holley HP to install and attempt to startup tune myself.

I agree with you on your turbo costs and being okay without skimping. For me, the previous owner built the car around low weight and a budget build with the on3. If I ended up going big money on the turbo and everything else I would have to basically start fresh. I was saving my money for either a dart block to freshen things up or consider some good flowing AFR or 11R heads with fti cam that would fit my combo better.

I have an on3 7875 sitting here new in box that I paid roughly $360 for and I may make the switch if I cans get this Holley HP up and running.

I would gladly consider an upgrade like a borgwarner if I wasnít having these on3 turbos currently working. Heck, the turbo is making all the power and I will likely be spending more money on a dual sync distributor for the Holley than the turbo head unit.
351, do you have a thread on Corral? We should figure out your best course of action for your car before you spend anymore money or do anything.
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post #35 of 126 Old 11-03-2018, 07:48 PM
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Iím finally getting my car back this week, so hit me up with questions about the Holley install. Iíll be able to use my car as a reference and send you pics and info as needed.
I need to look into a Holley system. I don't think a chip will be able to handle a boosted 351W lol.

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