Aluminum Fast Burn Heads

ALUMINUM FAST BURN HEADS
Chevrolet Performance’s Fast Burn 23-degree cylinder heads deliver maximum
performance for small-block engines. A new head casting – distinguished
by new Chevy bowtie logos at each end – and new valvetrain with
high-rpm, LS-style beehive-type valve springs stretches the performance
range of the heads to enable greater power – including a 25-hp increase in
our ZZ383 crate engine! Fast Burn technology delivers more horsepower by
increasing cylinder pressures, which maximizes the air/fuel mixture’s combustion.
The 62cc combustion chamber is designed for used with flat-top pistons.
The CNC-machined Fast Burn heads require no additional porting for optimal
performance, so all you need to do is bolt them onto your small block and go!
They can be used on any small-block engine with at least 4.000-inch bores
and the standard-flow coolant system. Not for use on Gen II 1992-96 LT1/LT4
engines with reverse-flow cooling system.