View Single Post
Old 06-12-2013, 10:24 AM   #29
Jeff Lee
VIP Member
 
Jeff Lee's Avatar
 
Join Date: Jul 2007
Location: Anthem, Arizona
Posts: 2,766
Likes: 0
Liked 3 Times in 3 Posts
Default Re: Impossible to achieve high 1.20s sixties

Quote:
Originally Posted by joespanova View Post
So , whats your suggestion on pinion angle?
BTW , what are the best 60's from the AMX? For comparison.....do tell.......
There is no comparison as my car has a Cal-Track (bars & springs) set-up with AFCO shocks and 9" wide slicks. But with a 634 HP SS engine it had consistent 1.38 60' times, best ET was 10.02 @ 133 in SS/H @ 3160 minimum. Pinion angle was 5*. And then we found out what was wrong with the chassis and it's been parked since.

I have run ladder bar cars with coil-over shocks and 11.5 wide slicks and would suggest a minimum of 5* to 6* pinion angle. Yes I know, that's 1* to 2* more than most would say. But I've never had a car with traction problems.
But that means I've never had enough HP...

There's a video of my car on YouTube. Rob Youngblood saw it and noticed I had too much line-lock pressure as I was having to force the car to the final stage light. I was running 250#'s. He suggested 100-150#'s as bumping it in like I was tears up the clutch. I took his suggestion and it worked a lot better.
There's a lot of good advice here and just like building a S/SS engine and car, all those little things do ad up. It's the guy's that poo-poo little ideas that never really have a lot to show in the end. And wonder why the guy in the other lane is so much faster.
__________________
Jeff Lee 7494 D/S '70 AMX

Last edited by Jeff Lee; 06-12-2013 at 10:30 AM.
Jeff Lee is offline   Reply With Quote