Quote:
Originally Posted by Mister Pontiac
He can, but will need 3/8” polylocks for the bottleneck studs.
When doing this, a situation can develop where a polylock bottoms on the bottleneck, but that’s no different than using the factory crimp nuts at that point. However, I don’t think any will bottom out, giving room for some adjustment. Either way, it’s a win over crimp nuts.
Ideally, you should replace the studs with 7/16” studs and use the 7/16” polylocks, but not necessary in a mild setup. That can also get into needing different rockers to go over the bigger studs, etc... depending on what you’re starting with. Cheaper, simple solution is to leave everything alone, and install 3/8” polylocks on the factory studs & rockers in lieu of crimp nuts.
Hope that helps.  |
Pontiac never used crimp nuts from factory.
If you like you can use Chevy crimp nut for adjusting the rockers and they will work just fine.
Been using Chevy crimp nuts for adjusting rockers in my 1966 GTO for at least 15 years, that way i can use the baffles under valve covers. With polylocks the baffles wont fit.