Double-Hump Comeback

[NorCam]

Originally Posted by BCreekDave

Assume then with the small heart shaped chambers that they are not bolt ons to a stock 11:1 302 or LT-1 style piston prepped short block. In other words, flat tops required.

These are forged 302 Speed Pro pistons that were milled down for 11:1 compression and fit fine with these heads. With the current 12-673-4 cam, the piston to valve clearance was Int .190 and Exh .180 with no issue fitting domed pistons. Likely a safe fit with up to .600 lift and would think they'll work fine with stock pistons and stock cam specs as well? With the taller rails they'll also accommodate stock z/28 finned valves covers over roller rockers.

Of course with that being said, I would always suggest every different setup is mocked up and clearance'd properly before being run as no two builds are typically the same. Kinda goes w/o saying right.


Speed Pro L2210F being milled from 12.5 to 11.1 dome


Trick Flow® DHC™ 175 Cylinder Heads for Small Block Chevrolet


Checking piston fit


Piston to valve clearance


Degreeing in of the cam


Bolted down with ARP hardware


Topped with a day two look but will fit stock top end.