engine ?

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08-14-2010 | 02:23 AM

ncrncevic

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engine ?

I have buy a mercruiser engine
nobody knows is it a 7.4 or 8.2
i have a seriasl number
10069286

can you help me
where can i look for the informations

nice greetings from Croatia
byby

08-14-2010 | 08:42 AM

Fast Shafts

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From: Toms River NJ

The casting numbers= 454 (7.4) Mark IV short deck, 1990-1991

08-28-2010 | 06:28 AM

ncrncevic

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hello
We have run with the engine about 4600 rmp
how we can get more rpm
what we need to change
the carb ... ?

Last edited by ncrncevic; 08-28-2010 at 06:31 AM.

08-28-2010 | 10:03 AM

BY U BOY

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From: HOUSTON ,TX

Quote:

Originally Posted by ncrncevic

hello
We have run with the engine about 4600 rmp
how we can get more rpm
what we need to change
the carb ... ?

Exhaust would be a start as well as intake. A victor Jr works well.

10-04-2010 | 05:59 AM

ncrncevic

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hello
i bought a small block
the number is 3970020
he said it is a 5.7 rebuild and bored with new pistons

but i was searching by the number and a saw that the engine is a 5.0 ??
can somebody help me
how much it have ps ?