Bore size on 382 stroker motor??
Bore size on 382 stroker motor?? Hey guys need some help here. I was lookin into either doin a 382 or 383 stroker kit. I was wonderin wut preperation I would need to do the block. Do I need to bore out the block to make room for bigger pistons or are they the same? Im sorry for all the questions. Im just trying to figure out wut all I need to know before i jump into all this. Also which one would ya do the 382 or 383. And any other things I might need to know please let me know.
TECH Apprentice
Joined: Jun 2004
Posts: 355
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From: Houston,TX
Originally Posted by redtransam02
Hey guys need some help here. I was lookin into either doin a 382 or 383 stroker kit. I was wonderin wut preperation I would need to do the block. Do I need to bore out the block to make room for bigger pistons or are they the same? Im sorry for all the questions. Im just trying to figure out wut all I need to know before i jump into all this. Also which one would ya do the 382 or 383. And any other things I might need to know please let me know.
Thanks for the info. Let me ask this then. Im prolly goin to go with a procharger would that go better with just heads an cam or a 402. This will be a daily driver now. So I have to keep that in mind too. Thanks for all the help.
TECH Fanatic
Joined: Jan 2002
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From: harrisburg, pa
Originally Posted by mnc2886
The bore is stock size. A machine shop will blue print your block and prep it for a forged bottom end, but honestly, strokers are a waste. A 383 really doesn't make any more power than a heads/cam car. Just a little more torque. Honestly, do some research on a 402 because in my opinion a stroker kit isn't going to do anything for you.
I think you are better off going with a 347 or and iron block 408 for big boost.
Originally Posted by mnc2886
The bore is stock size. A machine shop will blue print your block and prep it for a forged bottom end, but honestly, strokers are a waste. A 383 really doesn't make any more power than a heads/cam car. Just a little more torque. Honestly, do some research on a 402 because in my opinion a stroker kit isn't going to do anything for you.
Tony Mamo is making well over 600 hp with the 383 in his C5. Look for chassis dyno numbers in the near future.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
TECH Apprentice
Joined: Jun 2004
Posts: 355
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From: Houston,TX
Originally Posted by Patrick G
Wow, that's an amazing statement. Totally contradicts tens of thousands of racers who go faster with strokers. A 383 is a larger air pump than a 346 and setup correctly, it will make more power, not just more torque.
Tony Mamo is making well over 600 hp with the 383 in his C5. Look for chassis dyno numbers in the near future.
Tony Mamo is making well over 600 hp with the 383 in his C5. Look for chassis dyno numbers in the near future.
a 383 can make more power, more torque, and do it more with more reliability and keep it more streetable than a crazy aggressive h/c car. 383's make power all day long, starting down low. crazy 346's are all mid-high to high end.
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Originally Posted by mnc2886
I understand piston speed should be faster, but every 382-383 doesn't make more than 480 or 490 to the ground. Bad *** heads and the right cam seem to do that on stock bottom ends. Just my opinion that a stroker is so close to a 402 or 408 in price that you might as well just do it. I just see them as a waste of money. As far as what this guy is concerned, for boost I would go iron block for the best reliabilty.
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my 382 doesn't make great power and actually feels slower than other big hp 347's I have been in. I swore the car felt slower but because my 382 makes over 400ft lbs at 3000rpm it never stops pulling unlike my 346 witch was peaky
TECH Fanatic
Joined: Jan 2002
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From: harrisburg, pa
Originally Posted by mnc2886
Sorry guys, I've just never seen any better than an aggressive heads/cam car. I understand piston speed should be faster, but every 382-383 doesn't make more than 480 or 490 to the ground. Bad *** heads and the right cam seem to do that on stock bottom ends. Just my opinion that a stroker is so close to a 402 or 408 in price that you might as well just do it. I just see them as a waste of money. As far as what this guy is concerned, for boost I would go iron block for the best reliabilty. Just do a 6.0L if you want to keep it tame for the street.
But yes..383s are obsolete with the 402s/408s being more bang for the buck now.
