CMI headers on 353fastech/496HO's
 

I am thinking of doing this exhaust upgrade over the winter for next season. Any opinions,comments or results would be welcomed and appriciated.............E

Re: CMI headers on 353fastech/496HO's
 

I personally don't believe the performance per dollar is there on heavier twin boats from all I've heard. I seem to see the largest gains in performance on lighter singles.

Say you (or I) go this route on our 353's...and net 3 MPH

I don't know today's pricing but 2500.00++ per mph for 2 sets?

I'd do EVERYTHING I could with props first for less coin.

Or for a few K more see Raylar's upgrades.

This is strictly my opinion.

Re: CMI headers on 353fastech/496HO's
 

I've been considering them for my 35 Fountain but am hesitant to lose my Silent Choice. Sound laws appear to be getting tougher...

Re: CMI headers on 353fastech/496HO's
 

[QUOTE=Rippem]
I don't know today's pricing but 2500.00++ per mph for 2 sets?

... I understood the gain to be 60 hp a side. Possible 4 plus MPH increase.

However, I was also quoted well over $11,000 for 2 sets fully installed by a recognized engine builder in Orange County.

Re: CMI headers on 353fastech/496HO's
 

:eek: :eek: :eek:

yeeeaaa....that's performance bargain!

Re: CMI headers on 353fastech/496HO's
 

$ 11,000.00 installed? That's outrageous. If we can help, please let us know. We can provide real pricing, dyno sheets and product information if you like.

Kirk
Ateco Engine and Dyno Shop
The CMI Source

Re: CMI headers on 353fastech/496HO's
 

Thank you.

As clairification, I was told that my piticular boat was a tough install and labor intensive...

Re: CMI headers on 353fastech/496HO's
 

Even if you you had to R&R the engines, it shouldn't cost that much. That's over $ 3,000.00 in labor!! Who gets $ 1,500.00 per engine to R&R? I need that business.