408
05-07-2007, 06:53 AM
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408 Im picking up a 408ci shortblock and i would like to know if it will work with my ported ls1 stage 2 cylinder heads and ls6 intake, please all help needed...
05-07-2007, 08:08 AM
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the heads will bolt up as the 400+ strokers use a LS block, usually the LS2 for aluminum. Others use a iron block which I dont remember the code but its not LS but the heads will bolt up. The real question is if they will flow enough?
05-07-2007, 08:34 AM
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yes they will bolt up it being a 408 i would assume its an iron block (LQ4-9) thats fine. the LS6 intake will work fine also.
do you know any info about the setup....IE cam your using the compression the flow of the heads. in the end you could put a stock cam and heads on a 408 and they will work. may not produce the most power but would get you by till you could afford something else. good luck!!
do you know any info about the setup....IE cam your using the compression the flow of the heads. in the end you could put a stock cam and heads on a 408 and they will work. may not produce the most power but would get you by till you could afford something else. good luck!!
05-07-2007, 12:14 PM
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408 the heads were ported by todd at T-Flow performance and the valve springs are good to .600 lift, and around 66cc's i dont have the flow #'s off hand but i also got a fairly aggressive cam..
05-07-2007, 01:08 PM
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Originally Posted by playboy245
the heads were ported by todd at T-Flow performance and the valve springs are good to .600 lift, and around 66cc's i dont have the flow #'s off hand but i also got a fairly aggressive cam..
05-07-2007, 06:01 PM
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i got the heads rebuilt and ported for almost dirt cheap and they came with single springs. if i do upgrade to dual springs will that throw off any of my specs for the heads or is it pretty much straightfoward??
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05-07-2007, 08:03 PM
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Single vs Dual springs The main difference is open and closed seat pressure. It will not throw off any specs for the heads.
What cam are you planning to run?
Bob K.
What cam are you planning to run?
Bob K.
05-08-2007, 09:23 AM
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I have the grind number to the cam at my house when i get offf from work I will post it, it's a comp cam cam.
the flow numbers are
INTAKE EXHAUST
.100 72 63
.200 149 120
.300 205 155
.400 255 190
.500 287 214
.600 307 220
.625 310 228
the flow numbers are
INTAKE EXHAUST
.100 72 63
.200 149 120
.300 205 155
.400 255 190
.500 287 214
.600 307 220
.625 310 228
