| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#21
10-30-2018, 08:02 AM
|
||||
|
||||
A friend of mine runs a cam almost identical to that cam. It dyno'd at 560hp and over 600 lbs. of tq. It's in a basic 455 using stock Edelbrock heads, Performer RPM and 3.42 gears. He runs bottom 11's weighing 3800 lbs. and drives the car everywhere including six hours each way Norwalk. The notes on the cam card are spot on and it being a Howards's cam it will be easy on parts.
It should work great with your RAIV heads. I used to run close to the same cam (110 lsa) with ported 7F6 heads and went 11.3 @ 119 mph in my 80 TA. I used a Coan 11" converter and 3.42 gears.... the converter was tight for use with nitrous but the car definitely would've picked up with a looser converter. I doubt you'll gain much using additional lift on the exhaust with a RAIV head. The 4-7 swap will do very little on a cam that size. Last edited by PAUL K; 10-30-2018 at 08:08 AM. |
|
#22
10-30-2018, 10:14 AM
|
||||
|
||||
|
Thanks guys I will be happy if it's in the 550hp range with better street manners then my solid roller Isky 600 lift.
My 70 went 11.5 with the solid roller. I Want quiet valve train now with that motor & better drivability
__________________
 1970 GTO Judge. New times 10.60/126 with a 1.45 60ft.2002 FIREHAWK-conv. 6-sd. 1969 Carousel red Judge Ram Air IV 722 heads. 4-sd. Black interior. |
|
#23
10-30-2018, 11:09 AM
|
|||
|
|||
|
"Let me make one thing perfectly clear. When I talk about narrower lobe sep cams in big engines, I am specifically talking about Harold cams. Not Comp XE or anyone else's tight LSA cams. Harold did many things differently to his lobes. Things NO ONE ELSE DID! These subtle little things created lobes that when ground on a 110 LSA, gave the power band performance of a cam ground on a 112-114 LSA. Just look at some of the Voodoo lobes."
Paul Carter .
__________________
'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
|
#24
10-31-2018, 01:58 PM
|
||||
|
||||
|
What's not to like especially of the price is right? With your heads and CR it will be a street monster and I wouldn't worry about loss of torque due to the big tube headers. Still going to be around 600 ft lbs.
Last edited by NeighborsComplaint; 10-31-2018 at 02:06 PM. |
|
#25
10-31-2018, 02:03 PM
|
||||
|
||||
|
2" header tubes aren't going to hurt a thing. Dad ran 2" super comps on his last 455, with a mild hydraulic roller and an old set of Edelbrock round ports, 10:1 engine on pump gas, that engine on the dyno had a table top flat torque curve and peaked at over 600 ft lbs.
|
|
#26
10-31-2018, 04:35 PM
|
|||
|
|||
|
How Header Primary-Tube Diameter Affects Performance
https://www.hotrod.com/articles/head...s-performance/ .
__________________
'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
| Reply |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
