Re: Fix the car up, now runs poor at the track...HELP!

["Jim Blair" <carnuck@xxxxxxxxxxx>]

A: Have you dialled in the cam per manufacturer's specs? I have run into 
ones that worked good staright up, then the next from the same line needed 
to be retarded 7 degrees to run right.


From: "AMC of Memphis" <amcofmemphis@xxxxxxxxxxxxxxx>
To: <mail@xxxxxxxxxxxx>
Subject: Fix the car up, now runs poor at the track...HELP!
Date: Fri, 27 May 2005 09:35:21 -0500

New Page 5Ok, I have a few questions.  I went out to the track tonight and
ran some of the worst times I  ever have.  (best of a 14.7 prior to work but
usually ran around 15.1 - 15.3 and about a 15.7 now)

My 60 foot time was at best a 2.6 seconds.  (close the same as before)  Ok,
I figured that one out, I'm spinning off the line and slicks would help
alot.

Now, my max speed is about 88.5 mph.  I used to run about 93/94 mph in the
1/4.

I have changed my cam out with a comp cam 270H.  (The prior cam was a Crane
Fireball 306C and was good for a band of 2000-4800)  It's supposed to be
good for 1800-5800 RPM.  I thought that would help me out throughout the
whole powerband.

Next, I swapped out my original Carter AFB to an Edelbrock 1406 (600 cfm
with electric choke).

Is the Edelbrock a smaller carb than that Carter AFB?

I guess I'm looking for what I did wrong or what's going on.  Can someone
explain metering rods?

Heck, my 343 is much tighter sounding and seems as if it has more power than
before and it doesn't even leak oil anymore.


I've got a 343/bw M11 auto/3:54 posi rear in a 68 Javelin.