Thread: Ram Air III Cam
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Old 06-14-2023, 07:10 PM
unruhjonny's Avatar
unruhjonny unruhjonny is offline
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Join Date: May 2004
Location: Calgary, AB, Canada
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Quote:
Originally Posted by jhein View Post
Very informative and interesting article about the SD cam from Rocky Rotella.

https://www.pontiacv8.com/blog/2022/...320-k-camshaft
...
Thanks for the link!!

I like Rocky's articles, but since the demise of HPP, and now me opting out of getting boned on mailing POCI's Smoke Signals (I was told the "international rates" were essentially set to accommodate the Australian memebers) I haven't seen any of his new articles...
I do maintain a POCI membership, but even downloading SS to our tablet has proved to be an excruciating experience..

Quote:
Originally Posted by steve25 View Post
The biggest difference between the 068 and the 744 cam is the added 13 degrees of overlap!

This in and of itself will increase the rpm of where peak torque kicks in by a good 250 to 300 rpm .
If your running the 744 cam today in a under 10 to 1 400 cid motor along with under 3.55 rear gears then your likely not a very happy with your around town drivability and especially with a automatic trans.
I loved it in my fourty-over RAIII (backed with a 3.55 & M22 - probably under geared for a 400 with the M22).

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1970 Formula 400
Carousel Red paint on Black standard interior
A no-engine, no-transmission, no-wheel option car.
Quite likely one of few '70 Muncie three speed Formula 400's left.


1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing)
2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs)