454 indmar

[Randy Dominguez]

My boat has an early 2000's indmar motor can I get some Intel on the good and bad

 

[Lavey 29]

depends on anything - how well and properly it was maintained. its a GM block marinized by Indmar. Prob have a MEFI 4 ecm if its an early 2001 or back then MEFI 3 ecm.

 

[Dalton]

Just a big block Chevy, a fine starting point for a mild build, not sure if they’re 4 bolt mains


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[Randy Dominguez]

depends on anything - how well and properly it was maintained. its a GM block marinized by Indmar. Prob have a MEFI 4 ecm if its an early 2001 or back then MEFI 3 ecm.

Mines is not efi

 

[mash on it]

Mine was a 1996.
Advertised as 400 hp.
Steel forged crank, 4 bolt mains.
Hyperutectic (sp?) Pistons
Peanut port heads, non adjustable valve train.
Flat tappet cam.
GM iron intake, Q-jet style.
Prestolite distributor.
Logs and snails.
In my (first) jet botë.
Pulled an 'A' impeller to 4800

Dan'l

 

[Randy Dominguez]

Mine was a 1996.
Advertised as 400 hp.
Steel forged crank, 4 bolt mains.
Hyperutectic (sp?) Pistons
Peanut port heads, non adjustable valve train.
Flat tappet cam.
GM iron intake, Q-jet style.
Prestolite distributor.
Logs and snails.
In my (first) jet botë.
Pulled an 'A' impeller to 4800

Dan'l

After the a impeller did you notice a major difference? Or was it like just a little difference

 

[mash on it]

After the a impeller did you notice a major difference? Or was it like just a little difference

Boat had an A impeller, engine decided to eat #8 piston.

Bored a different block, turned crank, better heads and intake, Comp Cam, Bassett headers. 72.8 mph @ 5300 rpm

Dan'l