highest boost for a 331 in a stockblock?????????? - Ford Mustang Forums : Corral.net Mustang Forum
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post #1 of 37 Old 04-21-2005, 04:57 PM Thread Starter
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highest boost for a 331 in a stockblock??????????

I was just wondering whats the most boost to run on a all forged 8-1 comp 331 stroker in a stockblock with a girdle.I have a TDC TT stage 2 kit with edelbrock performer rpm heads,f-303 cam 42lb inj and 255 intank and t-rex fuel pump. I would like to see around 12-13 lbs of boost is that safe with that block?


R302-All forged 331 stroker Afr 205`s 9.2-1 comp
Cartech Twinturbo dominator kit 66mm`s
903rwhp @ 24lbs ran out of injector so stay tuned
for higher numbers!!!!!!!!!!!!!!!!
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post #2 of 37 Old 04-21-2005, 08:19 PM
 
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To be in the save side 575rwhp anything higher you will have no room for error.


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post #3 of 37 Old 04-22-2005, 02:26 PM Thread Starter
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thanks

R302-All forged 331 stroker Afr 205`s 9.2-1 comp
Cartech Twinturbo dominator kit 66mm`s
903rwhp @ 24lbs ran out of injector so stay tuned
for higher numbers!!!!!!!!!!!!!!!!
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post #4 of 37 Old 04-22-2005, 10:26 PM
 
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that question is dumber than a bag full of rocks.
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post #5 of 37 Old 04-23-2005, 03:32 PM Thread Starter
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Maybe the person who read the question is. I was trying to find out what amount of power the stockblock could handle before breaking so if you don't understand don't write nothing

R302-All forged 331 stroker Afr 205`s 9.2-1 comp
Cartech Twinturbo dominator kit 66mm`s
903rwhp @ 24lbs ran out of injector so stay tuned
for higher numbers!!!!!!!!!!!!!!!!
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post #6 of 37 Old 04-23-2005, 05:31 PM
 
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1. You were asking for boost numbers. If you knew anything about turbos, you'd ask in horsepower figures, not boost. Boost the measure of backpressure.

2.Without the turbos you already have enough to break the block in half.

3. A stock block is not good for over 400hp (on boosted apps), not 500. Don't let guesstimates fool you into thinking otherwise.
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post #7 of 37 Old 04-24-2005, 01:38 PM
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Mora doesnt know what he is talking about keep your tune around 475 rwhp and the rpms away from 5500 and youll be safe...for a while.

Mike
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post #8 of 37 Old 04-24-2005, 03:01 PM
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heh ... "for awhile" is the key wording

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post #9 of 37 Old 04-24-2005, 05:45 PM Thread Starter
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thanks guys for the answers. thats what I thought I just wasn't sure thanks again. Blown331fox that is one sweet ride

R302-All forged 331 stroker Afr 205`s 9.2-1 comp
Cartech Twinturbo dominator kit 66mm`s
903rwhp @ 24lbs ran out of injector so stay tuned
for higher numbers!!!!!!!!!!!!!!!!
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post #10 of 37 Old 04-24-2005, 09:15 PM
 
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Quote:
Originally Posted by Blown331fox
Mora doesnt know what he is talking about keep your tune around 475 rwhp and the rpms away from 5500 and youll be safe...for a while.

I have a brand new shot block for sale......

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post #11 of 37 Old 04-24-2005, 10:41 PM
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i just found out today that i cracked my block and i'm making around 550 rwhp. those stock blocks just don't hold .no matter if you got the best forged internals money can buy the block is the weak link. i learned the hard way and this is a d.s.s pro bullet short block with the good piston and aftermarket rods. running 14 psi and 11.9 air fuel ratio hope this helps.
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post #12 of 37 Old 04-25-2005, 09:14 AM
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550 fwhp would be the max I would push a stock block, if I cared about how long it lasted. The statement of keeping it in the high 400 rwhp and the rpms down is correct in that it will usually last for awhile like that.

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post #13 of 37 Old 04-25-2005, 10:16 AM
 
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I was making 600rwhp with the stock block for 2 year before it crack.
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post #14 of 37 Old 04-25-2005, 01:30 PM
 
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I've had blocks split in the low 400's. I wouldnt waste time or effort on a stock 302 block.
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post #15 of 37 Old 04-25-2005, 03:06 PM
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Other than the 2000 dollar blocks what would be a good block to handle 500rwhp??

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post #16 of 37 Old 04-25-2005, 03:10 PM
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A 351W but then once you spend the money on the misc things to make it work in your car, you get closer and closer to the $2k block which handles a lot more than a 351W. Supposeably a Mexican 302 block will handle it, no idea what they cost and what you may have to do(if anything) to get it to work.

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post #17 of 37 Old 04-25-2005, 04:57 PM
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HIT OR MISS sums it up...i was making well over 700 flywheel horsepower on my blown 331..never split...doesnt mean anything just the block gods shined down on me while i leaned on that stockblock

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post #18 of 37 Old 04-26-2005, 12:28 AM Thread Starter
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Thumbs up

I'm looking for around 600 flywheel horsepower I just don't have 2000 dollars for a block so I guess i will look for a good deal on a used sportsman block or something better than stock. Thanks for all the replies

R302-All forged 331 stroker Afr 205`s 9.2-1 comp
Cartech Twinturbo dominator kit 66mm`s
903rwhp @ 24lbs ran out of injector so stay tuned
for higher numbers!!!!!!!!!!!!!!!!

Last edited by 1sickpony; 04-26-2005 at 12:32 AM.
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post #19 of 37 Old 04-26-2005, 01:47 PM
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They lowered the HP rating on the sportsman block. I don't know how much it can handle now. Are the mexican blocks worth searching around for, storking, and adding boost for 500rwhp?

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post #20 of 37 Old 04-26-2005, 04:25 PM Thread Starter
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I was thinking about getting the dss level 10 block because the sales rep said they could handle 600 well according lbass they don't handle to much I really don't know how much the mexican block will handle I know you have to put retro fit lifters and stuff to make it a roller cam

R302-All forged 331 stroker Afr 205`s 9.2-1 comp
Cartech Twinturbo dominator kit 66mm`s
903rwhp @ 24lbs ran out of injector so stay tuned
for higher numbers!!!!!!!!!!!!!!!!
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post #21 of 37 Old 04-26-2005, 04:29 PM
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Isn't the DSS level 10 block just a stock Ford block?

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post #22 of 37 Old 04-27-2005, 01:06 AM
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either keep the stock block or buy a dart/4bolt/boss block there is no inbetween

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post #23 of 37 Old 04-27-2005, 11:25 PM Thread Starter
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the dss level 10 block is suppose to be better than stock according to dss. I might just go with a R302 block I just got to find out if anyone had a heating problem on the street they say the water passages are blocked

R302-All forged 331 stroker Afr 205`s 9.2-1 comp
Cartech Twinturbo dominator kit 66mm`s
903rwhp @ 24lbs ran out of injector so stay tuned
for higher numbers!!!!!!!!!!!!!!!!
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post #24 of 37 Old 04-28-2005, 04:29 AM
 
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Dont push that stocker past 450-500 rwhp and get a good tune on it (read conservative) and it should hold up until you can get a better block.

Save your money and buy a Dart or R302 until then your on borrowed time.
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post #25 of 37 Old 04-28-2005, 09:41 AM
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Quote:
Originally Posted by 1sickpony
the dss level 10 block is suppose to be better than stock according to dss. I might just go with a R302 block I just got to find out if anyone had a heating problem on the street they say the water passages are blocked
yes you're right the dss is better than the plain stock block. i loved my dss block i ran mine for 3yrs 1st year nos 2nd and 3rd year supercharged. and about 200 1/4 mile passes on it. and tons of street driving on it. if you're on a budget you can't beat a dss block out for the money and performance.
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post #26 of 37 Old 04-28-2005, 09:51 AM
 
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just set it at 30pounds of boost and let her rip lol
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post #27 of 37 Old 04-28-2005, 12:04 PM
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Quote:
Originally Posted by 1sickpony
the dss level 10 block is suppose to be better than stock according to dss. I might just go with a R302 block I just got to find out if anyone had a heating problem on the street they say the water passages are blocked
If it is not a A4, Boss 302, R302, Dart, B50, or a World Products block(did I skip one?) then I would question how it could be "better" than a stock block since I am 99.9% sure they are not making their own engine blocks.

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post #28 of 37 Old 05-02-2005, 11:46 AM
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Quote:
Originally Posted by snipe656
If it is not a A4, Boss 302, R302, Dart, B50, or a World Products block(did I skip one?) then I would question how it could be "better" than a stock block since I am 99.9% sure they are not making their own engine blocks.
yes you're right my friend just split his dss block in 1/2 on fri. had it for less than 1yr. so f... dss and there blocks. don't let them tell you different. i cracked mine.
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post #29 of 37 Old 05-02-2005, 11:57 PM
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I ran my stock block putting out about 474hp to the wheels through an AOD and had no problems with the block. Just the crank finally snaped on it. On and that was with hyper pistons and a good 6 months on 32 total timing (opps). This with a S-trim.

There is a guy here local with a stock shortblock putting down 650 to the wheels through C4 with his turbo. Runs 6.2's all day at the track. Soon it will be in the 5's. He had a YS-trim on there before that.

89 GT - Dart 331 , AFR, AOD, PT88, FAST
[email protected] 1.53 first time to build any boost off the line)

still need brakes and boost controller
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post #30 of 37 Old 05-03-2005, 12:44 PM
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Is a mexican block worth taking the time to swap out?

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post #31 of 37 Old 05-03-2005, 12:46 PM
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It seems to be working for Barry. I had a friend who many moons ago did the Mexican block swap and it did not work out too well for him. However that may mean nothing at all.

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post #32 of 37 Old 05-03-2005, 06:39 PM
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pata powa
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post #33 of 37 Old 05-03-2005, 08:02 PM
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pata powa
Sorry but I do not speak spanish.

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post #34 of 37 Old 05-04-2005, 10:03 AM
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y not
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post #35 of 37 Old 05-04-2005, 10:21 AM
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