timing change impacts to 60' and ET?

Kegracing · 07-19-2015, 03:09 PM

Wondering what timing changes will do to my 60' time and ET? Know every motor is a little different, but just give me your opinions and experience please.

This is a GM ZZ4 - 350 ci crate legal IHRA stocker motor, in a 67 Firebird. Stocker cam. I am currently running 38 degrees, with distributor locked. Usually it has consistent 60' of 1.49-1.51 depending on track condition, bracket racing. Last weekend, hot part of the day, it did spin a couple of times... lot of cars were spinning some, track was hot and sun was bright.

TX heat is just getting hotter, and I want to soften up the 60' a little bracket racing. Thinking about pulling 3 or 4 degrees of timing out of it?

I know testing is best, and only positive way to find out, but also know this is fairly common type combo, and lot of experience on here.

Thanks in advance.

Ken

Stock 412

07-19-2015, 03:09 PM	#1
Kegracing Member Join Date: Jun 2002 Location: Red Oak, TX Posts: 441 Likes: 0 Liked 0 Times in 0 Posts	timing change impacts to 60' and ET? Wondering what timing changes will do to my 60' time and ET? Know every motor is a little different, but just give me your opinions and experience please. This is a GM ZZ4 - 350 ci crate legal IHRA stocker motor, in a 67 Firebird. Stocker cam. I am currently running 38 degrees, with distributor locked. Usually it has consistent 60' of 1.49-1.51 depending on track condition, bracket racing. Last weekend, hot part of the day, it did spin a couple of times... lot of cars were spinning some, track was hot and sun was bright. TX heat is just getting hotter, and I want to soften up the 60' a little bracket racing. Thinking about pulling 3 or 4 degrees of timing out of it? I know testing is best, and only positive way to find out, but also know this is fairly common type combo, and lot of experience on here. Thanks in advance. Ken Stock 412