How much boost can a stock lsj block cylinder walls handle
01-15-2016 | 08:48 AM
#51
01-15-2016 | 05:21 PM
#52
Rent me! per hour
Joined: 03-22-07
Posts: 24,185
Likes: 20
From: Still fixing others mistakes.
they still make turbo kits that are a draw through carb setup. this is nothing new and has been proven to work, and work well in past setups, and todays setups.
same people said the same thing about spraying pre blower year ago as well. now people don't think twice about it.
If you're using it as a secondary fuel system, id go after the compressor due to higher methanol content to be used. pre turbo, id run no more than 70/30 on a meth./water mix.
mine lived just fine.
same people said the same thing about spraying pre blower year ago as well. now people don't think twice about it.
If you're using it as a secondary fuel system, id go after the compressor due to higher methanol content to be used. pre turbo, id run no more than 70/30 on a meth./water mix.
01-18-2016 | 09:17 AM
#55
they still make turbo kits that are a draw through carb setup. this is nothing new and has been proven to work, and work well in past setups, and todays setups.
same people said the same thing about spraying pre blower year ago as well. now people don't think twice about it.
If you're using it as a secondary fuel system, id go after the compressor due to higher methanol content to be used. pre turbo, id run no more than 70/30 on a meth./water mix.
mine lived just fine.
same people said the same thing about spraying pre blower year ago as well. now people don't think twice about it.
If you're using it as a secondary fuel system, id go after the compressor due to higher methanol content to be used. pre turbo, id run no more than 70/30 on a meth./water mix.
mine lived just fine.
01-30-2016 | 12:24 PM
#56
Senior Member
Joined: 06-06-06
Posts: 2,729
Likes: 9
From: O Fallon, MO
the stock block was never really rated that I know just peoples educated guesses
what it boils down to is this any stock part left in the engine is a weak point(minus the crank) even with a closed deck the stock sleeves are what will give up and the tune better be spot on as the stock sleeve will not take a lot of detonation and cylinder pressure
what it boils down to is this any stock part left in the engine is a weak point(minus the crank) even with a closed deck the stock sleeves are what will give up and the tune better be spot on as the stock sleeve will not take a lot of detonation and cylinder pressure
01-30-2016 | 12:43 PM
#57
i never have read an official rating. the gm build book builds the 400-600hp combo with sleeves, and the 250-400hp combo without sleeves. so imho, thats gm performances rating on what the block can take.
01-30-2016 | 07:39 PM
#58
not to mention people have broke the block completely stock so
02-01-2016 | 04:18 PM
#61
eh all depends on how porous the block casting is
gm rated the whole engine to only 300hp, but of course we've pushed way more and had em live... like 500+whp on completely stock bottom ends with just cams and valvesprings and they stayed together for thousands of miles.
but I do think that anything north of 450ish whp, especially with a power robber... I mean super charger (j/k) should definitely buy the added insurance of sleeving the block.
I'm just running press in diesel sleeves (well material used for making sleeves for diesel pulling trucks) and at 3000 miles now on the new motor all run at 24psi + last 1800 miles on 35psi on an s256 and so far so good.
gm rated the whole engine to only 300hp, but of course we've pushed way more and had em live... like 500+whp on completely stock bottom ends with just cams and valvesprings and they stayed together for thousands of miles.
but I do think that anything north of 450ish whp, especially with a power robber... I mean super charger (j/k) should definitely buy the added insurance of sleeving the block.
I'm just running press in diesel sleeves (well material used for making sleeves for diesel pulling trucks) and at 3000 miles now on the new motor all run at 24psi + last 1800 miles on 35psi on an s256 and so far so good.
02-03-2016 | 04:51 PM
#63
Senior Member
Joined: 01-21-12
Posts: 6,823
Likes: 84
From: Calgary
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