I picked up a Gen VI 454 marine engine... - Lateral-g Forums

boynton6spd · #1 12-15-2009, 08:49 AM

Going in a 67 Impala Fastback 700R4.

Self contained radiator...No salt issues!

Stock 330hp, roller cam, forged crank.

ONLY 300 HRS!!!

I want to do a "Mild" rebuild 450-475 hp range...

Any advice would be very, very appreciated...

Vegas69 · #2 12-15-2009, 10:21 AM

I have some parts for it including a hot roller cam and oil pan that should fit your chassis.

69MyWay · #3 12-15-2009, 11:05 AM

you can easily get that kind of power. Here is a good write up on Mark IV and Gen V and Gen VI rat motor differences.

http://www.chevyhiperformance.com/te...ons/index.html

boynton6spd · #4 12-15-2009, 09:22 PM

Great article, thanks for the link!

Can this much power (450-475hp) be made with a new cam, 9.8 to 1 Pistons, Edelbrock RPM airgap Intake and 750 cfm carb?

Looking for pump gas, daily driver reliability, with the stock heads...

I'm a school teacher w/ a laughable budget!!!

boynton6spd · #5 12-15-2009, 09:23 PM

Quote:

Originally Posted by Vegas69

I have some parts for it including a hot roller cam and oil pan that should fit your chassis.

Is the cam a streetable cam?

PM sent.

Vegas69 · #6 12-15-2009, 10:29 PM

Yep, I sent you the specs by PM. My engine had 9.5-1 compression and Dart Pro1 heads. Here is the chassis dyno.

boynton6spd · #7 12-28-2009, 06:16 PM

I think they are oval port but not sure, the intake is still on the motor, is there any way to tell externally?
Thanks in advance...

**GregWeld** · #8 12-28-2009, 07:39 PM

Pull a valve cover and read the casting number there - just do a quick Google of that number...

boynton6spd · #9 12-29-2009, 09:08 PM

i will tomorrow.

68400BIRD · #10 01-19-2010, 08:10 AM

Make sure it is not a reverse running motor. To keep a bigger boat going straight they reversed I think the starboard motor on some boats so the props were spinning into each other.