Quote Originally Posted by glennsexton View Post
I really like the 12558060 GM Vortec Cylinder Heads. I have used them for many builds and right out of the box they are fine. I bought six of them at one time from Scoggin-Dickey with “free shipping” and the UPS driver really hated me for a while!

As to the press in versus screwed in studs – you will have no issues with pressed in studs with any reasonable valve train. Chevy used these heads on a lot of applications and the only time I have seen problems is when someone installs a monster lift cam beyond what the head was designed for. The rocker arm studs can be drilled and tapped 3/8" if you want to spend the money – but it is not necessary. Pinning is quite easy – use a cobalt 5/32" drill and rolled pins (available from Summit or probably your local parts house).

Use AC Delco R44TS or NGK BP5FS plugs with a .045 gap.

The Vortec heads require self-aligning rocker arms. Chevrolet Performance part number is 12495490 - Rocker Arms 1.5:1 Ratio 3/8'' Stud Self Aligning – about $100. I have also used COMP Cams roller-tip Magnum rockers 1.52:1 ratio (part number 1417-16). Almost twice the money and I’m pretty much with Richard that the stock ones are the best value as in this type of build the roller tip is bling only. Do not use 1.6:1.

You will need a Vortec manifold as well. I like the Chevrolet Performance 12496820 manifold and a 750 Quadrajet but it’s an expensive combination - $300-350 for the manifold and at least that much again for a decent Q-Jet. Maybe the heads for Christmas and intake/carb for an early birthday present?

Great thread - love your boy and make the memories.

Best,
Glenn
Glenn this is valuable info, thank you!
I hear a lot of internet chatter about using threaded studs and was wondering if its overkill for most mild street builds, thanks for confirming that for me.