LS3 max bore ???
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Staging Lane
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From: South Mississippi
I've just found a deal on a LS3 block and its already bored to .10 over just trying to figure out if its something I can use or if I should just pass it up.
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Staging Lane
iTrader: (17)
Joined: Jan 2008
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From: South Mississippi
Texas Speed builds these often. Spoke to them they suggested the max bore they recommend for boost is 4.080 as long as you keep power at under 750-800rwhp or 900-1000 at the flywheel. I'm in the same situation have a spare LSA block that's at 4.075. My engine builder said at under 800rwhp I'll be fine all day long
Buying a bored block sounds stupid. Is it finished honed exactly around there or where? Do u k ow what piston you are using and what they call for ptw? If finished honed already was it TQ plate honed? If so with the same fastener u are using??
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Staging Lane
iTrader: (17)
Joined: Jan 2008
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From: South Mississippi
you are correct I think I'll just buy a new LS2 block that way I want have to worry if its cracked or if the ptw clearance is correct I was wanting to build a forged LS3 with a 4" stroke and put a LSA supercharger on it but I'm thinking the LSA 1.9 blower is gonna run out of air with a 416 cubic inch motor. What about with a 403 ci you think the blower would be ok with it.
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Teching In
Joined: Feb 2017
Posts: 12
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From: Illinois
1500hp capable and reliable? I'm just researching here. I want to get a grand total of around 1500hp out of a F2 procharged (20-30psi), nitrous (50-150 shot) ls3. I'd like to go with bored out and stroked but still want to reliably drive the car on weekends and whatnot (nitrous is for the track obviously). Any pointers/tips? All information is helpful
I'm just researching here. I want to get a grand total of around 1500hp out of a F2 procharged (20-30psi), nitrous (50-150 shot) ls3. I'd like to go with bored out and stroked but still want to reliably drive the car on weekends and whatnot (nitrous is for the track obviously). Any pointers/tips? All information is helpful
Teching In
Joined: Jan 2022
Posts: 18
Likes: 4
From: McKinney, TX
I have an LS3 stroker bored to 4.092" (bores needed to be cleaned up) with an F1A procharger and about 1000 crank hp and its fine. Block was machined by Horsepower Research in McKinney, TX. They build some serious ****
