holley 670

OldmanRick said
I applaud you for running the street bracket with your truck. Many don't realize how competitive, or how much fun it can be. Let's face it, vehicles like this are not efficient by racing standards, but well tuned and consistent can compete very well.

If it was mine, I'd play with the Holley for a while. Your MPH range at 4500lbs will put you just either side of the 300hp range, and that ain't half bad with a low comp 400 with a few bolt on/in's.

How much do you really get out to the track with it? I assume you can do some "street" testing. Kinda like I used to do. :D

I really have only responded to the carb swap, and would like to see you get the most out of it vs any combo changes at this point. Just a nice ride to enjoy at the track.

Thank you. The street class has been alot of fun for me regardless of how slow the pick up is. (I won the class last year). The series I'm running in has a race about once or twice a month, next being may 3rd. My work is located on a nice 1/4 mile stretch in an industrial park so I get plenty of street tuning done. I don't usually take it to test and tunes because its so dang slow. I will try playing with the jets and secondary springs to see if I can improve it.

It appears to have a #5 power valve. According to mu in gear warmed up vacuum (12.5-13) I should be running a 6.5. A buddy of mine suggested going to a 4.5. Your thoughts on this?