madmaro00

iTrader: (6)

I have a fresh '04 5.3 with stock heads milled .040", 220/218 .56x @114 cam, 1 7/8" headers, mated to a MA-5 trans in my '67 Camaro. The car just got put together and dyno'd. I have some cash left over and either want to upgrade my LS1 intake manifold to an LS6 or my 2.25" true dual exhaust with crossover pipe (modified from the original SBC that came with the car) to larger diameter piping. Below are the dyno results as it stands. Ignore the numbers as they are uncorrected at higher altitude and on a crazy conservative dyno. This car is a cruiser and is a blast just looking for the next bang for the buck mod and can't decide whether the intake or the exhaust is my biggest restriction.

Blackpanther99

iTrader: (8)

Intake manifold.

Rise of the Phoenix

iTrader: (27)

I second the intake manifold being the next mod.

madmaro00

iTrader: (6)

That's what I was hoping to hear, just didn't want to bother if the exhaust was choking it up. Thanks!

Rise of the Phoenix

iTrader: (27)

3" duals would be optimal, but I think the intake is choking things up more than the exhaust is.