As fuel gets hotter, it will become more vaporous, and in a closed system it can build pressure that will lead to fuel flow irregularities, especially inside the fuel rails. And since fuel becomes more vaporous at hotter temperatures, it also becomes less dense, leading to a weaker fuel charge delivered into the cylinders by the fuel injectors.
Detonation can occur if inlet air temperatures get too high and/or low-octane fuel is used. This will destroy the cast pistons in the LSA. Forged pistons are a smart upgrade. (The LS9 came with forged pistons from the factory.) Due to extremely high cylinder pressure, the heads can start to lift around 1,000 hp. At that point, you will need to basically build a whole new engine. The following upgrades will be required.
McClelland used a .007-second reaction time with a 9.924 at 149.22 mph on the 9.90 index to defeat Phil Unruh’s .026 with a breakout 9.899 at 159.29. It was a close race decided by just .003-second that sent Kyle Rizzoli and his SS/CA 1969 Camaro to the Super Stock winner’s circle in Pomona. Both Rizzoli (.010-second) and GT/IA ’92 Cutlass driver Adam Emmer (.022) hit the mark at the tree, but it was Rizzoli who went on to score his sixth national event win with a 9.579 (9.56) at 133.55 to a 10.120 (10.11), 125.89.
You’ve got questions. We’ve got answers. We work with the Summit Racing tech department to tackle your automotive-related conundrums. This week, we’re talking about swapping a 350 crate engine into an ’85 IROC-Z Camaro currently powered by a 305 TPI engine.