High throttle miss

[Texasdoc]

He didn't say who their previous manufacturer was. They currently use PAC racing. They are sending me AFR part 8019.

I have 1.6 ratio rockers, right at 600 lift, 1.8 installed height.

[blykins]

I think that's the best recourse. Honestly, I think it was a spring QC issue, which shakes my confidence since I run a lot of PAC springs in my race stuff.

I talked with Tom for an hour or so over email yesterday trying to match up the specs and supply another valve spring, but with the size of the valve spring pocket, the size of the springs, the install height, metric valve stem sizes, etc., it was a little tedious.

[Gaz64]

Originally Posted by Texasdoc

He didn't say who their previous manufacturer was. They currently use PAC racing. They are sending me AFR part 8019.

I have 1.6 ratio rockers, right at 600 lift, 1.8 installed height.

Looks like a step in the right direction, although it recommends a titanium retainer in the instructions?

http://www.airflowresearch.com/195cc...cylinder-head/