I know there is a lot of things to consider but . the cam i was going to use has to go back to be reground its going to take 3 weeks till i see it again. will this small cam work for a couple runs? I know my setup is way over kill . my specs are 15.8to 1 big chief heads 1400 cfm sheet metal intake.598 tall deck.
thanks in advance
I dont see that cam making anywhere enough top end. No need for killer mid range. Thats a 427 cam I believe. That same cam on 114º would be tame in 600 cubes and would need more duration.
looks like an E-85 race engine with BC heads??? not a street engine,,,
I used a small cam like that in an LS-7 I had with factory ported heads,was under 700 hp with 12.5:1.(pro gas motor before 540s got popular)
i wasn't going to keep it in i just wanted to get it running and make sure everything else is ok. I know the power will be way off. I was going with a .875in .850 ex 114 separation 290. int 305. ex @.050. I know my small cam is small I just thought with almost 16 to 1 the duration was to small and cause problems. remember its just for a couple weeks. its a points season and a motor swap thats all. dont want to miss it . just want to make 4 for 6 200 ft runs.
The cam will work and support the engine to around 5800-6000 rpm.
LSA means nothing to knowing what a camshaft will do. I just had a Salt Flat project peak at 7400 and run out till 7800 and the ICL was 104 and the LSA was a 109. At 565CID she exceeded 1000HP.
Chris Straub,look at the combination of 104 and 255,That part of the combo looks to me around 5,000 or less? Do you think it will make power at all past 5?
Vinnie,
You have a 2" pipe and 5" pipe and both are flowing max capacity....if you hold both of them open for 1 minute do you think they will flow the same amount of water?
He has Chief heads. The smallest of Chief style head I know of is 400cc on the intake port. If this engine had a set of 300 cc bbc heads then yes I would agree with you on done around 5000 rpm, BUT since these are HUGE heads, it will peak a little higher.
That was kinds my point of view to but from the devils advocate point of view. BC heads and that valves barely bumped open for a short period of time and a little early.I guess if the heads flow enough it could rev that high,just seems like a lot of cubes for such a small cam. I was also thinking thecombo would not work as well together,,,maybe worth a try?
Just want to thank all you guys . These heads flow close to 500 they are early Pontiac superduty heads pro stock head 427's castings they are all ported and flowed TI valves exct.
To the intake . Very nice parts it's a shame I have a bad cam but I just want to put this one in for a couple weeks at the track . This cam on my 45; spun7,200 and pulled hard all the way there . But this is all a different animal . It's going to need so much more air and fuel
so this is a Pontiac Asymetrical head that John Callies designed for Pontiac when he was there. It is the basis for what became the Chief Pro Stock head.
They have eagle stamped on the heads and intake. with some other numbers and letters.some heavy porting and milled down from 91 to 75 cc. Here is a little motor porn. I am very excited to finally get this to gather. I am just going to waiting for my new cam to come. I can find more things to do wile its out. should be here next week .
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Hot Rod Forum
2.2M posts
175.7K members
Since 2001
A forum community dedicated to hot rod owners and enthusiasts. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more!