Offshoreonly.com - Give me the poop on the 420hp merc.

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Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - Give me the poop on the 420hp merc. (https://www.offshoreonly.com/forums/general-q/43982-give-me-poop-420hp-merc.html)

mtgbiker

05-12-2005 08:50 AM

Re: Give me the poop on the 420hp merc.

What was the compression ratio on the 420hp motors?

KAAMA

05-12-2005 09:01 AM

Re: Give me the poop on the 420hp merc.

mtgbiker

Contact "rmbuilder" on this website for an accurate cam for your combination. He has a vast amount of experience, knowledge, and the integrity to get you what you need for a marine application cam grind.

mtgbiker

05-12-2005 09:39 AM

Re: Give me the poop on the 420hp merc.

Quote:

Originally Posted by KAAMA

Will do Kaama.....

mtgbiker

05-12-2005 10:11 AM

Re: Give me the poop on the 420hp merc.

Quote:

Originally Posted by KAAMA

Will do Kaama.....

Perfectmix

05-12-2005 01:45 PM

Re: Give me the poop on the 420hp merc.

Quote:

Originally Posted by articfriends

Josh,this is a 2 1/2 year old thread that someone dragged up!!! :eek:

Opps.:chimp:I was wondering why he wanted another set of engines:D. But thats what I would of said two years ago:drink: 420's rule

open87

05-12-2005 09:40 PM

Re: Give me the poop on the 420hp merc.

Quote:

Originally Posted by mtgbiker

What was the compression ratio on the 420hp motors?

9:1 flat top . all it was is a lS6 engine 7/16 rods and steel crank.

gripit

05-16-2005 12:24 PM

Re: Give me the poop on the 420hp merc.

Does anybody know what model Holley Carb came with the 420 HP? I'm looking for a spare.

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