LT1-LT4 Modifications 1993-97 Gen II Small Block V8

355 boost questions.

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Old Mar 15, 2009 | 03:39 PM
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Default 355 boost questions.

Im looking to build a budget 355 for boost, my number one question is how much boost can the stock crank take?
Im thinking my stock crank (resurfaced, or another oem one) with compstar forged rods, forged diamond pistons 9.1-9.5:1 comp, with file fit rings, and the rest of a fed mogul rebuild kit, basically how much boost can i run reliably? and How much HP can i make reliably?
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Old Mar 15, 2009 | 04:10 PM
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my setup is as follows:

head studs
main studs
stock crank cut .010
eagle I beam rods
ross -24cc pistons
ported heads w/ 54cc chambers
ported intake manifold
58mm tb
custome blower cam, something about 24x/24x .600/.600
hooker longtubes
6 spd
4.30 gears
d1sc w/ 3.25" pulley

i think youll be fine with the stock crank, just use main studs.

oh yea, my car with the same setup 3.7" pulley / 100 wet shot, there is evidence of major cap walk. 2 bolt, so be forewarned of using nitrous on whatever you build also.
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Old Mar 15, 2009 | 07:18 PM
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so about how much power do u think ur making cuz i was thinkkin about doin a similar build in the future?
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Old Mar 15, 2009 | 08:28 PM
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im shooting for 650rwhp.
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Old Mar 15, 2009 | 10:07 PM
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Originally Posted by I_Need_Land
im shooting for 650rwhp.

That would be about the limit of the stock crank. Well, at least where I would feel safe at. the 4.30 gear? strictly race?
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Old Mar 16, 2009 | 10:38 PM
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so the consensus is this would be good for up to 650 fwhp?

Next question, im thinking using a 6.00" forged rod will make for a pretty stout setup, im going to go with forged JE pistons probably just because i know the company from my Quad/dirtbike motor building days, what part number would be the correct ones to use? Im not sure what i should order for 4.030 bore and a 6 inch rod. Also what rings do everyone suggest and oil pump?
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Old Mar 16, 2009 | 10:40 PM
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Originally Posted by I_Need_Land
my setup is as follows:

head studs
main studs
stock crank cut .010
eagle I beam rods
ross -24cc pistons
ported heads w/ 54cc chambers
ported intake manifold
58mm tb
custome blower cam, something about 24x/24x .600/.600
hooker longtubes
6 spd
4.30 gears
d1sc w/ 3.25" pulley

i think youll be fine with the stock crank, just use main studs.

oh yea, my car with the same setup 3.7" pulley / 100 wet shot, there is evidence of major cap walk. 2 bolt, so be forewarned of using nitrous on whatever you build also.
YES i will be spraying with my new setup, but it will absolutely be converted to 4 bolt mains.
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Old Mar 17, 2009 | 01:06 AM
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Originally Posted by slomarao
That would be about the limit of the stock crank. Well, at least where I would feel safe at. the 4.30 gear? strictly race?
the 4.30 gear is being used in conjunction with a 28" tire.
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