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There is only one set of that style header.

Lift bridge, swing bridge, who cares, just have one that will open after midnight.

Thats what Merc used after the Stellings.

At 540 CI and naturally aspirated, a longer primary exhaust (around 32" to 34") will work better.

I had one, used it stock a few times, then added merlin heads ported at Champion in Eikerts old building, Crane hyd roller (not sure of the grind anymore), new valves, springs etc, etc. It actually...

Good is relative, many people will not feel good Sunday.

If you are in town Saturday(it might be to cold for you already) we are having a open house / party, mourning the end of summer!

Trade the Viper!

I thought of upgrading for a green Viper ACR.

Great cars with the top down.

Thinking about retirement as a TSA agent.

I do not know about the sound, but I like the "bit faster".

Thanks Pete

Great performance and price.

[QUOTE=mbam;422729]Nope, big block. Can't remember who made the valve covers, they were angled to clear the headers in the boat.


B&M

What speeds do you see with the tracks?

Page 8 of our catalog at www.custommarine.com shows four of the many results responces from customers. Teaque also ran 4 or 5 quantified before and after header installation tests with great results,...

[QUOTE=Raylar;419482]I guess I am always amazed how sometimes the stock 496HO 425 gets compared to a Mercury Racing HP525EFI. Heck, that comparison is really an apples and oranges comparison.

...

All of the major marine engine manufacturers testing of the 8.1's, along with the development of the GM HP3 496 were done on uncalibrated dynos?

Since all of the dyno results are faked, call Teaque for real world "non dyno" boat results.

I am having a 40 x 80 built and thinking about 1 1/2" spray foam on the walls and 6" batts before sheet rock. Opinions? Vapor barrier?

Any advantage to having them run straight back? Is it cheaper to do, or does that fact that there is not a bend in them somehow free up the exhaust just a little bit more for the slightest...

A recent 700/NXT downturn Fountain

These seem fast enough, for a 65mph ticket range, without the whipples.

I may be able to help.

Brooks,

Good second boat for you.