Anyone with AFR Enforcer heads on a TPI engine specifically ‘88 Trans Am? I have heard there are issues with Holley center bolts and some comment Proform has similar cracking issues. I am not partial to center bolt or the typical 4 bolt but want one that clears 1.6:1 Comp Cam Pro Magnum Full Roller Rockers and would like them to seal. Any suggestions?

 

Don’t the enforcers come in perimeter only ?

 

They have provisions for both.

 

The stock stamped centerbolt covers will not fit. Somewhere along the way they forgot a machining step and the boses for the perimeter bolts clash with the stamped steel covers.

 

I wasn’t sure if even machined, I plan to use perimeter I just ordered a set.

 

What brand did you order? A couple guys here have used the Proform Centerbolt. The issue with those is they are cast and unlike the stock valve covers, there is no stop per se so they are sensitive to cracking.

 

I’m using old heartbeat ones , I can’t recall who made if gmpp or billet specialties.

 

Enforcer heads, COMP Cams High Energy Diecast Aluminum Rocker Arms 17002-16, billet specialties short die cast perimeter bolt aluminum valve covers.