I have a m6 94 camaro z28. I have the lt4 hot cam with 1:6 rockers. With almost every bolt on. Likek headers, throttle body, 4:10 gears. Hot cam and 1:6 rockers are the only internal work done to the engine. Everything thing else is stock like the heads, etc. I wanted to buy the the lt4 heads, Lt4 manifold and have the engine bored .30 over. How much extra horsepower would this give me a estimate. 50, 60, 70 ??? at the wheels??? How much i'm I looking at to get this done$$$$1k, 2k

 

~330 total to the rear wheels, but for what you'd pay I'd just get your stock heads ported...

 

Lloyd Elliot's porting cost around $750-1000 and you will get MUCH better flow. Do a search to find him.

 

lloyd elliott to port your heads=hp.

 

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