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-   General Q & A (https://www.offshoreonly.com/forums/general-q-20/)
-   -   540 build exhaust question (https://www.offshoreonly.com/forums/general-q/344394-540-build-exhaust-question.html)

MILD THUNDER 02-02-2017 07:42 PM
Originally Posted by Unlimited jd (Post 4525480)
I've got an mk cam that will make 600 hp in a 502, makes less tq than a hp 500 but makes 600hp lol
Does it come with some fancy vocabulary to make you feel warm and fuzzy?

Unlimited jd 02-02-2017 07:55 PM
Sure does! Want some heads that are marine supercharged ready??? Ready to seize a valve in the guide is about it.

MILD THUNDER 02-02-2017 07:58 PM
Originally Posted by Unlimited jd (Post 4525489)
Sure does! Want some heads that are marine supercharged ready??? Ready to seize a valve in the guide is about it.
How dare you!

:party-smiley-004:

Unlimited jd 02-02-2017 07:59 PM
Lol, sorry for the derail. I can't believe how hard I was taken.

MILD THUNDER 02-02-2017 08:02 PM
Originally Posted by Unlimited jd (Post 4525491)
Lol, sorry for the derail. I can't believe how hard I was taken.
He's good. Real good. Sell sand to an Arab.

TxHawk 02-02-2017 08:03 PM
I knew this thread wasn't this active about exhaust! IMO, build a mild 540 and use SM exhaust or similar. This coming from a guy who just finished a really nice 540 and planning to restrict it with dry SM. .

MILD THUNDER 02-02-2017 08:07 PM
Hoping to get to do some exhaust testing soon on a 540 build.

Recently seen a 509, make 640hp thru dyno headers, and 600 when the SM manifolds were bolted on. And about the same loss in Ft lbs with the SM.

TxHawk 02-02-2017 08:23 PM
I know it will hold me back, but I don't need 700HP in a 27 EX anyway! I'd like to find some sport tubes or rear sweep stellings. Forward sweep headers makes me have to rearrange the front accessories. Accessory relocation is something the OP may need to consider.

Rookie 02-02-2017 08:29 PM
Originally Posted by MILD THUNDER (Post 4525470)
Why not skip the cost to purchase cranks, rods, and pistons to turn it into a 540, and put that money towards a set of these

http://www.diamondperformanceparts.c...cat=282&page=1

If I were a betting man, a 540ci with those 496 manifolds, will not outrun, a 502/509ci, with the above exhaust, if the power making parts are comparable (heads, cam, induction, etc)

600hp from a 502, is not that difficult, using the right parts.
I won't argue that the 502 might outperform the 540 with poor exhaust. I would personally build the best engine from the inside out. Build the 540 and have the limiting power factor the exhaust. It's a heck of a lot easier to put better exhaust on a year or 2 down the road than throw in a new crank, rods and pistons.

Full Force 02-02-2017 08:49 PM
Originally Posted by Unlimited jd (Post 4525491)
Lol, sorry for the derail. I can't believe how hard I was taken.
You too?


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