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Old 01-22-2013, 08:36 AM
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cobalt327 cobalt327 is offline
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Quote:
Originally Posted by savage9scorpio View Post
okay I have a 400 sbc stock bottom end. aluminum dual plane intake, 750 qjet, stock heads (for now) and a powerglide w/2.73's AND 488/510 CAM WITH 114 LSA. I haven't got the timing done completely so its still a lil off and I've been advised not 2 go WOT until I do get the timing down. but so far I love the 400's torque compared 2 the putt putt 307 I had.

the motor shifts into second around 40mph. can drop down 2 20mph while its in 2nd.
BUT MY QUESTION IS WITH A WIDE LSA WOULD THE TOP END BE MORE THAN a smaller lsa cam?
A wider LSA favors top end over bottom end, but the difference won't be huge unless the cam is a mismatch from the get-go. An article that compares various LSA in a SBC 400 (as well as open and divided plenum intakes): http://www.chevyhiperformance.com/te...t/viewall.html

Also, many cams have ground in advance when installed at the recommended ICL. This doesn't change the LSA, but tends to bolster the bottom end.

Quote:
when I'm in it it feels good on the highway I'm cruising @ 72 right around 1900 rpm. this is a STREET CAR. I haven't gotten into the throttle 2 much but what should be top end speed when I do get into those big secondaries?
Wallace Racing - Automotive Calculators

Last edited by cobalt327; 01-22-2013 at 08:48 AM.
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