Trick Flow® GenX™ 185 Cylinder Heads for GM LT1

Generate up to 500 horsepower!

If you're looking for the best value in GM LT1 performance, then look no further than these Trick Flow® new GenX™ 185 aluminum cylinder heads. The GenX™ as-cast heads feature 54cc combustion chambers to retain the LT1's factory 10.25:1 compression ratio and are CNC-profiled and bowlblended to maximize performance. The valve angles were reduced from 23 degree to 21 degree to increase piston-to-valve clearance and unshroud the chambers for better flow. Fast As Cast runners (185cc intake/67cc exhaust) duplicate the port shape and profile of fully CNC-ported runners to create the best-flowing cast LT1 head available. Right out of the box, these heads are easily capable of producing well in excess of 500 naturally
aspirated horsepower! Rounding out the features are stainless steel 2.020.in intake/1.600 in. exhaust valves,
GM LS-style 1.300 in. double valve springs, chromemoly steel retainers and locks, guideplates, and ARP 3/8" rocker studs. Of course, the heads retain the use of all stock sensors and fittings. So whether you favor supercharged, nitrous, or naturally aspirated LT1 power,
Trick Flow has a set of GenX heads to suit your needs. Bare cylinder head castings are also available.