how much boost on a studded stock allum block 5.3?
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how much boost on a studded stock allum block 5.3?
how much boost can we lay to a 5.3 alum block 08 longblock before they tend to push water with studs and gm headgaskets? we've gotta 08 5.3 and we'd like to put 18lbs to it with studs/gm gaskets, or are we gna have to oring the block?
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I'd like to know too. I think "skinnies" on here ran 16 with the stock L33 799 heads and GM headgaskets for an LS3 or something like that, and head studs, stock 10:1 CR. I could be remembering wrong, you might search on it. I was wondering if you put 317 heads on it giving more like 9:1 CR if you could get away with a little more turbo pressure since the cylinder pressure should be less. I guess the question is is 16psi at 10:1 CR the same cylinder pressure sas 20psi and 9:1 CR, or is that totally wrong thinking.
You would think 18psi should be totally safe though with studs, Ive run 16psi on a stock LQ4, stock bolts, stock gaskets, no problems. Or is the aluminum block a factor that lessens the amount you can run??
You would think 18psi should be totally safe though with studs, Ive run 16psi on a stock LQ4, stock bolts, stock gaskets, no problems. Or is the aluminum block a factor that lessens the amount you can run??
#3
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Stock 5.3 shortblock with 317 heads & stock head bolts, I ran 15psi and a 50hp dry shot of N2O. On the standard one peice gasket. 3 years never had a problem.
I would think on a stock bottom end you'd push it to its HP limits before lifting the heads...my opinion... I could be wrong though.
Also the smaller bore = the more gasket surface area... not sure if that helps at all???
I would think on a stock bottom end you'd push it to its HP limits before lifting the heads...my opinion... I could be wrong though.
Also the smaller bore = the more gasket surface area... not sure if that helps at all???
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I'd like to know too. I think "skinnies" on here ran 16 with the stock L33 799 heads and GM headgaskets for an LS3 or something like that, and head studs, stock 10:1 CR. I could be remembering wrong, you might search on it. I was wondering if you put 317 heads on it giving more like 9:1 CR if you could get away with a little more turbo pressure since the cylinder pressure should be less. I guess the question is is 16psi at 10:1 CR the same cylinder pressure sas 20psi and 9:1 CR, or is that totally wrong thinking.
You would think 18psi should be totally safe though with studs, Ive run 16psi on a stock LQ4, stock bolts, stock gaskets, no problems. Or is the aluminum block a factor that lessens the amount you can run??
You would think 18psi should be totally safe though with studs, Ive run 16psi on a stock LQ4, stock bolts, stock gaskets, no problems. Or is the aluminum block a factor that lessens the amount you can run??
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lmao, does anybody here run or know of someone runnin a alum blocked 5.3 liter and how much boost are they see'n before pushing coolant is what i need to know i would ask the ls1 guys but the truck alum block is "supposed" to be stouter from what ive gathered.
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https://ls1tech.com/forums/dynamomet...light=786+rwhp
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We made an easy 786 rwhp on a stock LS1 short block, if you need more than that, you should be considering a built bottom end anyhow
https://ls1tech.com/forums/dynamomet...light=786+rwhp
https://ls1tech.com/forums/dynamomet...light=786+rwhp
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Not sure, we made that power with only 11.5 psi, thanks to a good set of heads and an 'all wrong' cam....
We'll be strapping down the same car after the new year looking for 1100+ with a new 6.0 bottom end with rods and pistons (yes, stock crank ), bigger heads (TFS 235s vs the AFR 205s), a new VA Speed Turbo cam vs the old TRak cam and a lot more boooost.
We'll be strapping down the same car after the new year looking for 1100+ with a new 6.0 bottom end with rods and pistons (yes, stock crank ), bigger heads (TFS 235s vs the AFR 205s), a new VA Speed Turbo cam vs the old TRak cam and a lot more boooost.
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awesome! so 800 at the crank is possible with a alum blocked 5.3 then! well i ordered the studs/pushrods/rodbolts, already had the gaskets.
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Not sure, we made that power with only 11.5 psi, thanks to a good set of heads and an 'all wrong' cam....
We'll be strapping down the same car after the new year looking for 1100+ with a new 6.0 bottom end with rods and pistons (yes, stock crank ), bigger heads (TFS 235s vs the AFR 205s), a new VA Speed Turbo cam vs the old TRak cam and a lot more boooost.
We'll be strapping down the same car after the new year looking for 1100+ with a new 6.0 bottom end with rods and pistons (yes, stock crank ), bigger heads (TFS 235s vs the AFR 205s), a new VA Speed Turbo cam vs the old TRak cam and a lot more boooost.
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the alum 5.3 is goin into my uncle's 17ft earl tunnel, its the 1 that looks like a mini cheyenne.
#17
What internals did you run?
#18
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Another 10 yrs late to the party...
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