Quote:
Originally Posted by WildBillyT
a moderately sized cam (XE274)
decent street motor with a little power
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So then what is a BIG cam, and allot of power?
Looks like that cam in a smallish ( under 383 CI) displacement is going to need some pretty high gears ( thinking 3:55s ) and allot of head flow to get it up into the RPMs Is that your plan? If not, you might want to tighten up the duration a bit and maybe even a little bit more LSA. The specs I found on the XE274 have it with 230+ duration on a 112 LSA. That combined with static RC below 10:1 isn't going to have much power down low. That cam probably isn't going to go into any kind of power until your well into the 3,000RPM range.
If this car is going to see more cruising then racing, you might want to rethink that cam before you even start on your CR decision.
How tight is your budget?
http://www.jegs.com/p/Keith-Black/Cl...48677/10002/-1
If I did the math right, with a 62cc head and stock thickness head gasket would put you around 9.7 CR. put that with a cam with 224-228 duration 560-570 lift and around 113 LSA would make power around 2500RPMs and would match up nice with your trans and gears.
Another option ( my favorite ), leave it at 7.9 with the 274 cam, and drop a nice 671 blower on top of it. See, all your problems fixed!
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93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
Last edited by Pampered-Z; 06-29-2009 at 01:04 PM.
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