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Old 06-26-2009, 03:39 PM   #36
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curious....what does your car weigh?
I can't really remember if it was 3160 or 3260 with me in it. one of the two.
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Old 06-26-2009, 03:42 PM   #37
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Im gonna go with your IAC on that stalling problem, on my car if i dont keep my idle at 1000 rpms i stall under same conditions, and i mean 100 less rpms will do it so if u got ur idle set at 800 rpms u might wanna try to raise it a little? Also every vacuum leak i ever had when i pushed in the clutch when slowing the idle would be to high
Yeah, I'm gonna mess around with it and see what the problem is. thanks for the input though.
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Old 06-26-2009, 03:45 PM   #38
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badloser: thanks man. yeah the car's a blast to drive. I'm already used to it though, so it feels slow to me lol. You know how that happens.
lone sailor: yeah, I didn't pay someone to tune it just to go and mess it all up afterward by myself...lol
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Old 06-26-2009, 03:46 PM   #39
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I can't really remember if it was 3160 or 3260 with me in it. one of the two.
thats cool.....I'm just trying to base my combo and car off other's to see what it might run...thanks for the info.
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Old 06-26-2009, 03:48 PM   #40
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Thumbs up

Congrats on the nice numbers.

Buy a GT40 lower on the Auction Block and have it ported. Then sell your lower after the swap and you have no downtime on your car.





Edit: I didn't see that you had long tubes already....
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Old 06-26-2009, 05:17 PM   #41
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im hoping to get over 300 rwhp with my combo.im doing a gt40p combo stock shortblock with custom cam. 1.6 rockers,i had my heads milled to 51cc,inexpensive under/back cut 1.85 intake valves (use the stock exhaust valves). Replace the all the valve springs with new ones. The beehive style that Crane offers . Serdi cut the valve seats,. long tube headers,rpm intake,30# injectors,75mm t/b,pms to tune when thats not enough add a bottle
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Old 06-26-2009, 05:33 PM   #42
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Get the lower ported. Grind the bumps out of those GT-40s, and slap a comp cams XE276 in it. Hold on.
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Old 06-26-2009, 06:46 PM   #43
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Just curious, how would the results differ if u installed trick flow heads and intake in the place of the gt40 heads and intake
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Old 06-26-2009, 07:11 PM   #44
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thats really good numbers.get the intake ported and put a sc or turbo and you would have block splitting hp.i have a complete tfs stage 3 top end with v1 @10#boost.i ran 22.20@125mph.i have 4-10 gears so i ran out of gear before traps about 100 ft before at least.this is with street tires(26'' rekins)junk.stock tune.any idear how much i might pick up with slick (28""tall),tune,my 60ft with street tires was high 1.9 almost a 2 flat(not to bad for the tires 273x40x17 hard compound street tires.i am looking to put tune i just started with quarter horse and software from EA and BE.but i am having no luvk tuning im about to bring it to get dynotuned as soon as i find a reputable shop around here in kansas.any suggestions. THANKS
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Old 06-28-2009, 04:41 PM   #45
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Thanks guys. I need to get to the track lol.
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Old 06-28-2009, 05:08 PM   #46
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I woulda put a decent cam in along with a new timing chain. You would have been way happier with the results. I'm only saying that because you were right there (in tare down). But on another note, Good job man. Looks good.
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Old 06-29-2009, 03:57 PM   #47
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I woulda put a decent cam in along with a new timing chain. You would have been way happier with the results. I'm only saying that because you were right there (in tare down). But on another note, Good job man. Looks good.
thanks man. I would have put in a cam but, like I said earlier, I'm not sure yet what I want to do in the future as far as power adders so I'm holding off on the cam for now instead of having to replace it more than once. The car's an every day driver for me so I'm very happy with the stock cam still being in there lol.
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Old 06-29-2009, 11:52 PM   #48
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good#'s-- i am getting ready to do the gt 40 heads and ported intake swap any advice you can offer before i get started?
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Old 06-30-2009, 07:47 AM   #49
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good#'s-- i am getting ready to do the gt 40 heads and ported intake swap any advice you can offer before i get started?
Take your time and plan ahead!!! Don't decide you want to order motor mounts half-way through cuz they're more accessible with everything off the motor. Order them ahead of time so the downtime isn't longer. Other than that, make sure you know how to adjust the rockers and hopefullly you get lucky with your stock pushrods like I did.
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Old 06-30-2009, 11:26 AM   #50
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I know you said your not sure where you want to go with a cam, but I have an E-303 I'll sell you. I'm in Stoughton, MA so we could meet up somewhere. PM me if your interested.
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Old 06-30-2009, 12:09 PM   #51
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thanks man. I would have put in a cam but, like I said earlier, I'm not sure yet what I want to do in the future as far as power adders so I'm holding off on the cam for now instead of having to replace it more than once. The car's an every day driver for me so I'm very happy with the stock cam still being in there lol.
Nice numbers man! If you are planning on a power adder in the future, you did the right thing by leaving the stock cam in place. The stock cam will work great with a supercharger/turbo. No need to spend the extra money on a aftermarket one.
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Old 06-30-2009, 09:21 PM   #52
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Def. good numbers.

My old 92 LX made 261 with:

C&L MAF meter
GT40 Intake
GT40 Iron Heads
1.7's
Crane 2031
BBK shorty headers
Prochamber
Flowmaster catback
T5
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Old 07-03-2009, 07:37 AM   #53
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Def. good numbers.

My old 92 LX made 261 with:

C&L MAF meter
GT40 Intake
GT40 Iron Heads
1.7's
Crane 2031
BBK shorty headers
Prochamber
Flowmaster catback
T5
Nice. How'd you like the 2031?
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Old 07-04-2009, 04:38 AM   #54
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sounds like good numbers!

with the suspension and some good tire's i would slap a 100shot on the car and run the hell out of it.

im hoping to make simular number's with ported E7's and full boltons with my car
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Old 07-04-2009, 05:49 PM   #55
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I have not been on the Corral in years, I walk in, and find a "stocker" thread...
Awesome!
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Old 07-05-2009, 02:35 PM   #56
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Thanks guys.... I'm still debating whether this will be a nitrous, turbo, or blower car. Decisions decisions.
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Old 07-05-2009, 05:16 PM   #57
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I have not been on the Corral in years, I walk in, and find a "stocker" thread...
Awesome!


Time to revive the mouse?
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Old 07-05-2009, 07:12 PM   #58
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when it cools off, I think I'll utilize a trailer to make a few runs...
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Old 07-06-2009, 03:36 PM   #59
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BTW, forgot to mention, I only made 256/295... 265 was an old dyno number!
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Old 07-07-2009, 07:47 AM   #60
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BTW, forgot to mention, I only made 256/295... 265 was an old dyno number!
LoL That's even better news for me... Great ET's!!
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Old 07-25-2009, 01:18 AM   #61
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Subscribing! ME likey! Im stockpiling parts to do a gt40 swap im definately going to have a TMOSS port job on the lower, and find some ported gt40 non p's with some 1.7 rockers and stock cam. My last car i had hogged out tfs heads crane 1.6 and a custom cam, and full on suspension and gutted and only made it to 12.69 @107 and 11.6 on a 100 shot. Im going to prove to myself that i cant beat that with 1/4 of the cost
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Old 07-25-2009, 01:54 AM   #62
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FWIW, when I ported the lower intake on my combo it netted anywhere from 5-8 RWHP acorss the board. The torque was way up though.

Don't let you guys talk you into throwing a cam at if if you aren't sure what you are doing yet. You'll keep all your low end grunt, driveability and milelage.

Don't worry about that magic 300 number. It is nothing but a number. I wish I would have listened years ago.

My combo went a best of 12.07@110.89. That was all I needed at the time, but took tonss of driving and tuning to get it there.

A lot of guys think 290-300 is the norm for gt-40's and gt-40p headed combos. unfortunately it is not. 260-270 is the norm. My heads are ported and have larger valves, which everyone says not to do with gt-40's.....go figure.

Good luck with your combo, I'm sure you'll enjoy it. just watch giving it timing. My motor loved timing, but the head gaskets did not.
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Old 09-11-2009, 05:21 PM   #63
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thanks Franknstang. I don't plan on touching the timing at all; or anything for that matter.. I brought it to Dez's to get tuned for a reason....I'm not gonna mess with anything he did. I'm happy.
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Old 09-11-2009, 07:14 PM   #64
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I had a 2030 crane in my previous ported stock intake/E7 combo,made 259/315 and was real fun.No loss of torque,pulled hard to limiter with 3.55's and didn't surge just rump-rumped.
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Old 09-11-2009, 07:55 PM   #65
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what is the bump everyone talks of grinding out of the gt40 heads?
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Old 09-11-2009, 07:58 PM   #66
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GT 40

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My combo went a best of 12.07@110.89. That was all I needed at the time, but took tonss of driving and tuning to get it there.

A lot of guys think 290-300 is the norm for gt-40's and gt-40p headed combos. unfortunately it is not. 260-270 is the norm. My heads are ported and have larger valves, which everyone says not to do with gt-40's.....go figure.
First off awsome numbers out of stock GT 40's. Mine made 272hp 308ft/lb with GT40's, trickflow stage 1, long tubes, RPM air gap carb intake, 650 quick fuel carb. I have my heads off right now porting them and going to have a valve job done.

What size valves did you use in yours and is it worth the money on these heads?
Second off how much can you safely mill off these heads flat milling with out any problems?
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Old 09-11-2009, 08:03 PM   #67
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Bumps

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Originally Posted by PolishSasquatch View Post
what is the bump everyone talks of grinding out of the gt40 heads?
If you look in the exhust port on the top there are 2 bumps that were for factory egr or some junk. If you use a die grinder and grind them smooth it helps out the flow a ton.
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Old 09-11-2009, 08:47 PM   #68
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Originally Posted by JimmyS91 View Post
If you look in the exhust port on the top there are 2 bumps that were for factory egr or some junk. If you use a die grinder and grind them smooth it helps out the flow a ton.
really? is it simple to do, i wont need to grind new valve seats or anything right?
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Old 09-11-2009, 09:03 PM   #69
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Originally Posted by PolishSasquatch View Post
really? is it simple to do, i wont need to grind new valve seats or anything right?
I took my valves out, was carefull not to damage the valve seats. I got a exhust gasket the old one, and bolted it up to the head, Used my die grinder and open up the head to the size of the gasket, flip the head up side down and carefully grinded off the hump/bump. Took couple of hours. I didn't flow them before or after, or dyno for that matter, but picked up just over 2 tents in the quarter. I now have the heads off the car again doing a full port, valve job and maybe bigger valves.
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Old 09-11-2009, 11:43 PM   #70
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Hell yeah!!! Stock stuff rocks!!
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