454 Magnum, Cam, Intake, Carb.

[scottw]

I'll be pulling my motor this fall to remove "Y" pipe to get rid of silent choice exhaust. I will also be painting motor as well as repainting bilge and doing some re-rigging. What I am wondering if while the motor is out, what kind of performance gains would I get out of adding the right combination of roller cam, roller lifters and rockers. Intake manifold and carb.:huh: Motor is a 1990 454 Magnum 365hp with Imco Thumper Power Exhaust. Estimated to be 385hp with exhaust. Motor only has 100hrs. on it since it was freshened.

 

[FLEG]

I'll be pulling my motor this fall to remove "Y" pipe to get rid of silent choice exhaust. I will also be painting motor as well as repainting bilge and doing some re-rigging. What I am wondering if while the motor is out, what kind of performance gains would I get out of adding the right combination of roller cam, roller lifters and rockers. Intake manifold and carb.:huh: Motor is a 1990 454 Magnum 365hp with Imco Thumper Power Exhaust. Estimated to be 385hp with exhaust. Motor only has 100hrs. on it since it was freshened.

I know someone that did the exact same thing you want to do! He said he got 470hp by doing it!!!

 

[MILD THUNDER]

430-460HP. Your mag motor will wake right up with those upgrades. You already have a good exhaust, so thats a bonus. Even if you dont go for a hyd ROLLER, i'd still upgrade to a more aggressive cam. The stocker was pretty tame. Go for it!!

 

[jeffswav]

You can easily get 460HP, call Bob with Marine Kinetics "RMbuilder". He will point you in the right direction. Many of us have used him for out custom roller cams.