LS1 383 Stroker or LS3 Swap
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LS1 383 Stroker or LS3 Swap I have a 99 Corvette with the, as far as I know, stock LS1 bottom half. It has LS2 heads that have been ported, hardened pushrods with thick wall, triple springs, stainless retainers, and upgraded full trunion rockers, but the cam and cam bearings are shot and need to be replaced.
My goal was to create a 500HP car, and have money left over to do some other upgrades to make it a nice every now and then driver. I planned to keep it NA for now, maybe way down the road do some kind of FI, but for now, NA. I have a budget of about $10,000, really don't want to go over that.
Should I stroke the LS1 which will take about three months or go with a LS3 swap which may take a week?
I would love to see your suggestions, because I am racking my brain and can't make a decision.
Also, does anyone know how to get in touch with Ronnie Pace III, because this use to be his car (not the wrecked one, clearly) and he could tell me what has been done to the bottom half.
My goal was to create a 500HP car, and have money left over to do some other upgrades to make it a nice every now and then driver. I planned to keep it NA for now, maybe way down the road do some kind of FI, but for now, NA. I have a budget of about $10,000, really don't want to go over that.
Should I stroke the LS1 which will take about three months or go with a LS3 swap which may take a week?
I would love to see your suggestions, because I am racking my brain and can't make a decision.
Also, does anyone know how to get in touch with Ronnie Pace III, because this use to be his car (not the wrecked one, clearly) and he could tell me what has been done to the bottom half.
I have a 99 Corvette with the, as far as I know, stock LS1 bottom half. It has LS2 heads that have been ported, hardened pushrods with thick wall, triple springs, stainless retainers, and upgraded full trunion rockers, but the cam and cam bearings are shot and need to be replaced.
My goal was to create a 500HP car, and have money left over to do some other upgrades to make it a nice every now and then driver...….
My goal was to create a 500HP car, and have money left over to do some other upgrades to make it a nice every now and then driver...….
Are we talking 500hp to the wheels or at the crank? If you're only looking to get 500hp at the crank (about 420 or so to the wheels), I say go the least expensive route.
My daily driven LS3 with heads and relatively mild cam puts out 493hp to the wheels....as a frame of reference.
KW
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Because the ls3 get its cubes from the larger bore. Vs the 383 getting its CI from a longer stroke. The ls3 also has a lot better options when it comes to heads and intakes due to the larger bore
LS3 with 376 cubes and 4.065 bore will make more hp even with the same heads, cam and intake vs the 383 LS1. The LS3 with the stock stroke 3.62 vs 4 inch stroke 383 LS1 is capable of last 300,000 + miles in normal use, a 4 inch stroke motor would with stock LS1 sleeves probably take a several ring and piston refreshes to reach 300,000 miles.
The Lingenfelter 58x 24x conversion box works well if you don't want to change the LS3 reluctor wheel on the crank for your 99 vette.
The Lingenfelter 58x 24x conversion box works well if you don't want to change the LS3 reluctor wheel on the crank for your 99 vette.
LS3 with 376 cubes and 4.065 bore will make more hp even with the same heads, cam and intake vs the 383 LS1. The LS3 with the stock stroke 3.62 vs 4 inch stroke 383 LS1 is capable of last 300,000 + miles in normal use, a 4 inch stroke motor would with stock LS1 sleeves probably take a several ring and piston refreshes to reach 300,000 miles.
The Lingenfelter 58x 24x conversion box works well if you don't want to change the LS3 reluctor wheel on the crank for your 99 vette.
The Lingenfelter 58x 24x conversion box works well if you don't want to change the LS3 reluctor wheel on the crank for your 99 vette.
Originally Posted by 99 Black Bird T/A
LS3 with 376 cubes and 4.065 bore will make more hp even with the same heads, cam and intake vs the 383 LS1. The LS3 with the stock stroke 3.62 vs 4 inch stroke 383 LS1 is capable of last 300,000 + miles in normal use, a 4 inch stroke motor would with stock LS1 sleeves probably take a several ring and piston refreshes to reach 300,000 miles.
The Lingenfelter 58x 24x conversion box works well if you don't want to change the LS3 reluctor wheel on the crank for your 99 vette.
The Lingenfelter 58x 24x conversion box works well if you don't want to change the LS3 reluctor wheel on the crank for your 99 vette.
I wouldn't suggest using a 241 head on any motor build given a set of 243/799's can bought for $350 to $400. However, to answer the question the LS3 with 4.065 bore would have advantage over the LS1 with a 3.9 bore using even a stock 241 head.
I'd definitely encourage a set of stock LS3 heads on the LS3 over a set of 241's.
I'd definitely encourage a set of stock LS3 heads on the LS3 over a set of 241's.
TECH Senior Member
Joined: Feb 2009
Posts: 5,445
Likes: 4
if you have a good engine machine shop close by ,I would recommend the 383 ls stroker.you already have the block ,if it checks out to be usable .have the heads looked at ,to make sure they are what you need .check out the price of good ls383 rotating assemblies .Tony Mamo built a killer ls383 many years ago .
TECH Veteran
Joined: Sep 2014
Posts: 4,893
Likes: 703
From: Mississippi
if you have a good engine machine shop close by ,I would recommend the 383 ls stroker.you already have the block ,if it checks out to be usable .have the heads looked at ,to make sure they are what you need .check out the price of good ls383 rotating assemblies .Tony Mamo built a killer ls383 many years ago .
Get a LS3 and run the factory LS3 heads and intake but add a cam from a reputable company/person... DONE
TECH Fanatic
Joined: Jul 2007
Posts: 1,802
Likes: 332
From: Wilmington, De
Buy the LS3 and sell the LS1. A friend of mine is doing a 440 in his 4th Gen and sold his LS1 for $2500.
You're at a much larger advantage with the LS3's bigger bore, and should you get bored with the power, you can always add a 4" stroke for more cubic inches later on.
You're at a much larger advantage with the LS3's bigger bore, and should you get bored with the power, you can always add a 4" stroke for more cubic inches later on.
Buy the LS3 and sell the LS1. A friend of mine is doing a 440 in his 4th Gen and sold his LS1 for $2500.
You're at a much larger advantage with the LS3's bigger bore, and should you get bored with the power, you can always add a 4" stroke for more cubic inches later on.
You're at a much larger advantage with the LS3's bigger bore, and should you get bored with the power, you can always add a 4" stroke for more cubic inches later on.