LS1 Stroker
LS1 Stroker Looking to do some upgrades and was wondering if anyone here has a stroker LS1. I am not that well versed in what it would take and what kind of gains I can expect out of it. I am running 12.4s now at the track with my current mods. Can anyone fill me in on how possible it is to do this to an LS1, what kind of gains i can expect, and what parts would have to be replaced to make it work. I dont intend to supercharge this car, but I may latter add some nitrous.
Thanks,
Mike
Thanks,
Mike
Teching In
Joined: Mar 2002
Posts: 18
Likes: 0
From: ST. Louis, MO
Originally Posted by White2000TA
Looking to do some upgrades and was wondering if anyone here has a stroker LS1. I am not that well versed in what it would take and what kind of gains I can expect out of it. I am running 12.4s now at the track with my current mods. Can anyone fill me in on how possible it is to do this to an LS1, what kind of gains i can expect, and what parts would have to be replaced to make it work. I dont intend to supercharge this car, but I may latter add some nitrous.
Thanks,
Mike
Thanks,
Mike
lots of guys here have strokers, your question is pretty broad.
https://ls1tech.com/forums/showthrea...cheap+strokers
https://ls1tech.com/forums/showthrea...cheap+strokers
https://ls1tech.com/forums/showthrea...cheap+strokers
https://ls1tech.com/forums/showthrea...cheap+strokers
https://ls1tech.com/forums/showthrea...light=strokers
https://ls1tech.com/forums/showthrea...light=strokers
https://ls1tech.com/forums/showthrea...light=strokers
https://ls1tech.com/forums/showthrea...light=strokers
https://ls1tech.com/forums/showthrea...cheap+strokers
https://ls1tech.com/forums/showthrea...cheap+strokers
https://ls1tech.com/forums/showthrea...cheap+strokers
https://ls1tech.com/forums/showthrea...cheap+strokers
https://ls1tech.com/forums/showthrea...light=strokers
https://ls1tech.com/forums/showthrea...light=strokers
https://ls1tech.com/forums/showthrea...light=strokers
https://ls1tech.com/forums/showthrea...light=strokers
I know its a very general question, I just want to know if I should consider doing that or invest in something else. (invest is used lightly 
). I guess im just looking for some rough ideas of $/HP I should expect to get from such a project. If its reasonable and what components I would be able to reuse. I appreciate all of the help you guys lend!
). I guess im just looking for some rough ideas of $/HP I should expect to get from such a project. If its reasonable and what components I would be able to reuse. I appreciate all of the help you guys lend! 
Launching!
Joined: Jan 2004
Posts: 226
Likes: 0
ive have also been seriously considering a ls1 stroker and it is alot of money plus the additional parts you need to buy to handle the power it will make. I guess it also depends on if you will do the work yourself. For a 382 expect to spend at least 7000-10000 installed. And then almost twice that for the 427. I am now thinking of getting a good heads and cam kit......
Originally Posted by jdp244
For a 382 expect to spend at least 7000-10000 installed. And then almost twice that for the 427. .
Last edited by BOO HOO BRIAN; Feb 19, 2004 at 06:46 PM.
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Originally Posted by Brian@AP-Engineering
If off the shelp pistons are used, a 382 and a 427 are only the crank price apart.
I think he was talking about 382 with a stock bore and 4" crank and a 427 being a big bore and a 4" crank.With your combo I would throw a good set of heads on it first (didn't see heads in your sig). You can always do a stroker after that, since you would probably do heads for it anyways.
-Geoff
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He sayes stroker not all bore. For a 427 you would need a machined resleeved block which will run in the 3k neighborhood. More head work would also cost you more $$$. The only things reused are intake, valley cover, front and rear cover, and oil pan. Then you need to do trans, rearend, driveshaft and suspension. Power doesn't come cheap.
TECH Junkie
Joined: Dec 2001
Posts: 3,242
Likes: 0
From: Lakeland, FL
If only a crank is used with a 383 as the desired cubic inches then I think it is possible to get away with roughly 6400 to 7000 installed with a tune and warrantied. The best prices I found were at APE and Futral so I would contact either of them and hear what they had to say about the stroker and pricing.
If its not a daily driver I'd do a solid roller 346 or even cheaper a 6 liter. I just built a 427 and everything to go with it, you would fall over if I told you what I spent.
TECH Enthusiast
Joined: Nov 2001
Posts: 553
Likes: 0
From: Dallas TX
It looks like (though you would need to double check with a few shops) that an all bore 382 and a stroker 382 cost just about the same $.
Stroker:
The new forged rotating assembly costs $
Save money because not as much machine work is required compared to the re-sleeving process.
All Bore:
The machine work for the sleeves costs $
also, extra head work required costs $
Save money because you don't need the high dollar new crank.
It comes out more or less even on the money side.
(personal opinion starts here):
I'm leaning toward the stroker route, since the all bore engines seem to have a few niggling problems. First there were a few sleeves dropping (though that seems to be taken care of, and some builders have never had a sleeve drop) Now Darton wants you to convert to Evans coolant and an Evans water pump if you use their new Wet Sleeve system. That was kind of the straw that broke the camel's back for me - one more expense, and I trust GM to stay in business longer than Evans to sell me replacement water pumps.
So stroker looks likely for me. The generally better torque would be more fun on the street. And you can still spin it fairly high, 6500rpm shouldn't be a problem.
Stroker:
The new forged rotating assembly costs $
Save money because not as much machine work is required compared to the re-sleeving process.
All Bore:
The machine work for the sleeves costs $
also, extra head work required costs $
Save money because you don't need the high dollar new crank.
It comes out more or less even on the money side.
(personal opinion starts here):
I'm leaning toward the stroker route, since the all bore engines seem to have a few niggling problems. First there were a few sleeves dropping (though that seems to be taken care of, and some builders have never had a sleeve drop) Now Darton wants you to convert to Evans coolant and an Evans water pump if you use their new Wet Sleeve system. That was kind of the straw that broke the camel's back for me - one more expense, and I trust GM to stay in business longer than Evans to sell me replacement water pumps.
So stroker looks likely for me. The generally better torque would be more fun on the street. And you can still spin it fairly high, 6500rpm shouldn't be a problem.
I guess I was misunderstanding what is involved. I saw the Stroker kit from AP for 3600. not sure what else I would need and what kind of HP i would get from such an animal. I do not have aftermarket heads yet, but am looking at the new AFR heads.
Not to be nosey but how much money are you looking to spend on the whole car? This will determine how much should be spent on just the motor. Unless you are going to spent alot (like 20 k or more) I think your money will be better spent staying small cube. If you do a set of AFR's and a nasty cam you'll still make lots of power. Doesn't do much good to make lots of hp and tq if you can't get it to the ground. Just my .02, good luck with whatever you decide
Thanks.. well i dont have an amount in total i want to spend overall, but as far as this round, I dont want to spend more then 4k on parts. My cam is currently 224/221/113. We are also exploring putting in a vig 4400 stall with the AFR heads. This is only the second year racing this car, so Im not sure how far I will go with it.
But damn blasting at the track is just too damn cool!
But damn blasting at the track is just too damn cool!
Why not spray the car. All the torque will help you out with the low stall converter you have. use the rest of the money upgrading your drivetrain. You need to lay a foundation for all that power or you will just bust something.
I want to spray it eventually, just thought might be a good idea to have the heads first. The price I got for a good wet kit was ~$900 or so. Tranny upgrade from Carl Rossler was like 2.5k. Havent priced rearends. But cant afford to do all that. For this year just trying to sneak an occasional 11 in there. After that cage would have to come as well. 