Re: LOOKING FOR HEADS & EXHAUST FOR MY PROCHARGED 7.4MPI
 

Hi Bob,
I'd go with the new large oval Edelbrocks that we've talked about. Have the whole rotating assembly balanced with your new components...
Stainless Marine has a great exhaust package, I bought mine from Trick. Revolution Marine may be a little less $$ though.
Mark at Precision EFI or Tyler Crocket are the two guys to talk to about ECU calibration; my personal experience with AZ Speed was not great...
Have Fun! :drink:

Re: LOOKING FOR HEADS & EXHAUST FOR MY PROCHARGED 7.4MPI
 

Thanks for your advice Patrick. I have a line on some Merlin cast heads with big valves. Flat top's should give me high 8's in compression. Thanks for the offer on the CMI's. I need to match up to my Volvo crossover through hull, in place, and I am pursuing silent choice compatible located dumps.

Re: LOOKING FOR HEADS & EXHAUST FOR MY PROCHARGED 7.4MPI
 

World Products Merlins are another great choice. Stock they have a 118cc chamber so with flat tops the CR will be closer to 8:1; still good for a blower motor...