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.
The L8B also uses stop/start technology that will shut down the engine at traffic lights and during slow, stop-and-go traffic. The engine uses a BAS3 (Belt Alternator Starter) in place of an alternator. The BAS3 recharges the battery AND is used to restart the gas engine after it shuts down. Other than the alternator, both engines use the same major components.
Upgrading the camshaft will require the matching valve springs. Titanium retainers are also recommended. They will reduce the valve weight and prevent valve float. The trunnion bearings in the stock rocker arms are a known weak point. We strongly recommend a trunnion upgrade kit. Swapping in a set of full roller rockers is another option.
Larger-capacity aftermarket fuel rails are also at risk for these issues, especially in boosted applications where an underhood turbo or supercharger is creating more heat for the rails and the fuel inside them to absorb. Seeing the problem at hand, Heatshield Products developed its FR Shields™ to combat this issue by wrapping the fuel rails in a deflective thermal barrier that keeps radiated heat from soaking into the rails (whether they be aluminum or other alloy) and heating the fuel inside the rails.