Edelbrock Performer 5.0 351W Intake Manifold Phenolic Spacer Kit-1520 locks-and-hardware The ECU must then reduce

The ECU must then reduce engine power to prevent detonation

We also addressed the weak factory detent pressure and have significantly increased the detent pressure creating a noticeably stiffer shift feel and preventing the transmission from popping out of gear

7L V8 1981 - 1985 Chevrolet K5 Blazer Silverado 305/5

4 V8 1968 Chevrolet Impala 307/5 V8 1961 - 1967 Chevrolet K10 Pickup 283/4

8 V8 2007 Chevrolet Silverado 1500 Classic LS 325/5

Edelbrock Performer 5.0 351W Intake Manifold Phenolic Spacer Kit-1520 locks-and-hardware The ECU must then reduceBBK Performance phenolic intake manifold spacer kits have proven to be a great way to increase performance for late model Ford EFI owners. Each Phenolic spacer is CNC Machined from 3 8 inch phenolic material, these manifold spacer kits increase power by reducing the transfer of heat from the lower manifold to upper air intake manifold. This produces lower air intake temperatures which results in added horsepower and the ability to add more timing