Bolt-on SS vs 347 stroker GT
10-25-2008, 01:48 AM
#41
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RPMs are a huge factor when discussing the durability of a stock late-model 302 block; often more important than sheer power. and the girdles do nothing but keep everything in a nice pile when it breaks.
I'll be spinning my stocker to 7ish and we'll see how long it takes to make two inline 4s although I put in smaller pills.
I'll be spinning my stocker to 7ish and we'll see how long it takes to make two inline 4s although I put in smaller pills.
10-25-2008, 02:08 AM
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10-25-2008, 08:03 AM
#43
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A lot of ignorance to go around in this thread. Has anyone checked out the latest 5.0 mustang magazine? In it, a 340 c.i. engine with a boss block makes 600 hp n/a and 800 hp with nitrous.
To the ignorant GUY from strawberry, Alabama: I've got a 331 c.i. fox-body and I'd gladly take your $20 (or more) in any race against your car from a drag or a roll, if you're willing to come on down to Columbus, GA or Silver Dollar raceway in Reynolds. If you're confident enough in your POS then I'll make it worth your while.
To others: a properly built 347 will always make more power than a similarly built 331, and this is coming from a guy who built a 331. The problem with 347s has been greatly exaggerated and can even be easily overcome with a proper length rod 5.315" rod instead of a 5.400" rod. If you use this rod, then you can use the exact same piston in a 347 that would otherwise be in a 331. Even without the use of this length of rod, many builders have had absolutely 0 issues with a 5.400" rod and proper clearancing. Bottom line is that properly built there is no oil consumption problem or power reduction that will result from choosing a 347 c.i. engine instead of a 331. The increase in stroke is just 15 hundredths of an inch. Think about the mechanics of that. That's a crankshaft with throws that are offset only 75 thousandths of an inch more than the 331 crank.
The hype that resulted in this new myth that 331s make more power than 347s came from a DSS dipshit that had his opinion posted in a MM&FF magazine. It was dead wrong at the time and has always been dead wrong. I don't know if this was some kind of marketing hype or if he just saw a 331 with a better combo make more power than a 347 with worse combo and didn't put 2 and 2 together.
I made the choice to go with a 331 based on the deal I could get on a crank and rods that resulted in that displacement. That said, I'd swap in a heart beat if I could get a comparably stout 3.400" stroke crank with similarly tough 5.315" rods. I also needed a thicker piston (added compression-height) to help shield the wrist pins from the increased heat associated with a high-boost turbo application.
Chris
To the ignorant GUY from strawberry, Alabama: I've got a 331 c.i. fox-body and I'd gladly take your $20 (or more) in any race against your car from a drag or a roll, if you're willing to come on down to Columbus, GA or Silver Dollar raceway in Reynolds. If you're confident enough in your POS then I'll make it worth your while.
To others: a properly built 347 will always make more power than a similarly built 331, and this is coming from a guy who built a 331. The problem with 347s has been greatly exaggerated and can even be easily overcome with a proper length rod 5.315" rod instead of a 5.400" rod. If you use this rod, then you can use the exact same piston in a 347 that would otherwise be in a 331. Even without the use of this length of rod, many builders have had absolutely 0 issues with a 5.400" rod and proper clearancing. Bottom line is that properly built there is no oil consumption problem or power reduction that will result from choosing a 347 c.i. engine instead of a 331. The increase in stroke is just 15 hundredths of an inch. Think about the mechanics of that. That's a crankshaft with throws that are offset only 75 thousandths of an inch more than the 331 crank.
The hype that resulted in this new myth that 331s make more power than 347s came from a DSS dipshit that had his opinion posted in a MM&FF magazine. It was dead wrong at the time and has always been dead wrong. I don't know if this was some kind of marketing hype or if he just saw a 331 with a better combo make more power than a 347 with worse combo and didn't put 2 and 2 together.
I made the choice to go with a 331 based on the deal I could get on a crank and rods that resulted in that displacement. That said, I'd swap in a heart beat if I could get a comparably stout 3.400" stroke crank with similarly tough 5.315" rods. I also needed a thicker piston (added compression-height) to help shield the wrist pins from the increased heat associated with a high-boost turbo application.
Chris
Last edited by JayplaySS; 10-26-2008 at 02:09 PM.
10-25-2008, 03:49 PM
#44
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Ha is that right? Well i got a 20 dollar bill in my billfold that says my ol white sdime will drag that peice of **** grandma cougar down the road.I havent lost to a junk *** ford yet , hell the peices of **** usually break down before we get a run..Wait ,i have lost to a ford falcon..but i guarundamntee ill put a white stripe on that cougar.My sdime will skin it back son. 20 dollars...get you some son , ill send his peice **** back home ona a gawddamn trailor.
ill let u see how fast any car can be made. the one thing u tend 2 forget u fattard 
is that any car can be made fast. so if ur man enough come down here and crush all our fords with ur rocket car
10-25-2008, 06:07 PM
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Gotcha.
HAHAHA....wow. YOu are more of an idiot that one could assume.
So, genius...tell all of us what weight, power, et and TS your car is. I'm willing to bet you either a) won't/can't or b) will ie up uranus.
He couldnt' drive 10 minutes to race a stang, let alone 15 hours.
Ha is that right? Well i got a 20 dollar bill in my billfold that says my ol white sdime will drag that peice of **** grandma cougar down the road.I havent lost to a junk *** ford yet , hell the peices of **** usually break down before we get a run..Wait ,i have lost to a ford falcon..but i guarundamntee ill put a white stripe on that cougar.My sdime will skin it back son. 20 dollars...get you some son , ill send his peice **** back home ona a gawddamn trailor.
So, genius...tell all of us what weight, power, et and TS your car is. I'm willing to bet you either a) won't/can't or b) will ie up uranus.
fine im in fresno california and would love 4 u 2 come out. u could race the cougar then ill race ur junkie *** car. ill let u see how fast any car can be made. the one thing u tend 2 forget u fattard is that any car can be made fast.
so if ur man enough come down here and crush all our fords with ur rocket car
ill let u see how fast any car can be made. the one thing u tend 2 forget u fattard is that any car can be made fast. so if ur man enough come down here and crush all our fords with ur rocket car
10-25-2008, 07:17 PM
#47
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Gotcha.
HAHAHA....wow. YOu are more of an idiot that one could assume.
So, genius...tell all of us what weight, power, et and TS your car is. I'm willing to bet you either a) won't/can't or b) will ie up uranus.
He couldnt' drive 10 minutes to race a stang, let alone 15 hours.
HAHAHA....wow. YOu are more of an idiot that one could assume.
So, genius...tell all of us what weight, power, et and TS your car is. I'm willing to bet you either a) won't/can't or b) will ie up uranus.
He couldnt' drive 10 minutes to race a stang, let alone 15 hours.
10-25-2008, 08:25 PM
#48
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That sounds cool man.....but I have my kids most of the time. Let me know when it is and I'll see if it's a day/time I can do it.
10-25-2008, 08:40 PM
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A well built 347 is better than a 351W. IMO Rob's Automotive Machine in Hayward, CA has an N/A carbed 347 running 10.3 @133 on its first time out.
10-26-2008, 04:14 PM
#56
RPMs and how well the rotating assembly is balanced play a huge factor when discussing the durability of a stock late-model 302 block; often more important than sheer power. and the girdles do nothing but keep everything in a nice pile when it breaks.
I'll be spinning my stocker to 7ish and we'll see how long it takes to make two inline 4s although I put in smaller pills.
I'll be spinning my stocker to 7ish and we'll see how long it takes to make two inline 4s although I put in smaller pills.
I'll also be spinning my little 302 to 7.
10-26-2008, 04:47 PM
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my last toy was a 91 hatch with a chp street fighter 347 with trickflow 205 heads vic jr. street 750 hp carb 4.30 gear. Ran 11.02 @ 125 then put a 3.73 gear in it a 150 shot and ran 132.5 mph int he 1/4 @ kcir.
