Lazy off the line

blasttime · 08-28-2016, 06:07 PM

Quote:

Originally Posted by Adger Smith

Why is the cam listed as 2 deg retarded with only 10.5 Comp?
Why such a high leave RPM?
Footbrake lower and hit the converter stall harder.
Might be loosing TQ multiplication of the converter.
I would put a little more timing in it before I re jet 2 lower.

X2 on everything

Run to Rund · 08-29-2016, 10:36 AM

I agree with the above advice. When I read the initial post, I felt the carb was too big, the intake too aligned to high rpm (especially depending on how it was ported), and the rear gears too mild. Yes, the carb and intake may match the ported heads, but the overall result is consistent with a high rpm combination, and is being killed by a low rpm combination elsewhere.

Dave Turner · 08-29-2016, 12:53 PM

How much total timing do you have dialed-in....all in by??

pfordamx · 09-27-2016, 12:22 PM

How tall are your rear tires?

3.90s wouldn't be bad if you had 26-27 inch tire i've been mid 1.50s in a 3200lb amx with 4.10s and 28 inch tires with a much milder than your combo 390. that 1.90 sixty foot definitely indicates a issue somewhere.

RON NICKELS · 12-01-2016, 02:50 AM

Let me know when you find that spot on the tree,lol.

HAMMER

08-29-2016, 10:36 AM	#2
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 583 Likes: 8 Liked 54 Times in 27 Posts	Re: Lazy off the line I agree with the above advice. When I read the initial post, I felt the carb was too big, the intake too aligned to high rpm (especially depending on how it was ported), and the rear gears too mild. Yes, the carb and intake may match the ported heads, but the overall result is consistent with a high rpm combination, and is being killed by a low rpm combination elsewhere.

08-29-2016, 12:53 PM	#3
Dave Turner VIP Member Join Date: Oct 2005 Location: Schomberg, ON, Canada Posts: 1,222 Likes: 1,606 Liked 364 Times in 138 Posts	Re: Lazy off the line How much total timing do you have dialed-in....all in by?? __________________ Dave Turner SS/GT #1153

09-27-2016, 12:22 PM	#4
pfordamx Member Join Date: Sep 2011 Location: Oklahoma City, OK Posts: 214 Likes: 3 Liked 7 Times in 5 Posts	Re: Lazy off the line How tall are your rear tires? 3.90s wouldn't be bad if you had 26-27 inch tire i've been mid 1.50s in a 3200lb amx with 4.10s and 28 inch tires with a much milder than your combo 390. that 1.90 sixty foot definitely indicates a issue somewhere.

12-01-2016, 02:50 AM	#5
RON NICKELS Junior Member Join Date: Dec 2007 Posts: 28 Likes: 0 Liked 0 Times in 0 Posts	Re: Lazy off the line Let me know when you find that spot on the tree,lol. HAMMER