82's front and rear... Do you have power valves front and rear??
 

KAAMA DanB, thanks for the info.

Dan, did you run any dyno sweeps with and without the K&N and are the numbers above with or without it? I have one I currently run, but did not run andy dyno sweeps with it adn I am wondering how much it helps/hurts/etc. You are about 45-50 numbers bigger on both hp and tq, so doubt it is just cam, probably the heads, which is allowing the bigger carb and so on. Mine did not like anything bigger than the 850 (4150 as well). Ran best at 32* as well. MSD 6AL here. Hmmmm............Damn! Anyway, food for thought, thanks guys for the input.


If I wasn't so hell bent on dyno time before I install the motor, I would think about upgrades this winter, cam and head work. We'll see........you know what that means....:D

Mike, I think you win the award for best highlight ability in your posts HAHAHAHAHAAAA!!!!!!:D :D

I may have won the contest for highlights but didn't get my
 

question answered. Does the carb have power valves or not. Got to know:confused: :confused:

mike-I do not know the answer from the person you are looking from but I have used power valves on every project I have done. Carb jetting is a compromes from off idle to wide open. Power valves just help you get close to the right Air/fuel ratio right on at all throttle settings. This goes for blower or NA. If you only go from idle to full like in a drag boat or car then power valves get in way.

Has anyone tested another cam then Crane 731/741?

This winter I am building a mild motor strarting with my current GenV 454. Four bolt mains and oval ports. I am told that these heads with a cleanup and intake/gasket/port match are good to 6,000rpm. My usual mechanic suggests basically building it into a HP500. I am looking for a maintenance free setup. An ocasional rocker adjustment at most. This boats never going to be real fast so I would rather have it be strong and reliable. Its only rated at 275pshp now and could use some life. Im not sure how much power I want to push through my King Cobra/Vovlo SX drive on a heavy single engine combo. Any thoughts appreciated.

How about a N/A build up using the GMPP 502ci partial.
You get a complete 4 bolt shortblock for $3960.
Add good flowing alum heads with around 9.5:1cr. Dart or Brodix
Single plane intake.
900cfm carb.
MSD dist.
Mild to wild hyd. roller cam...you all ready have the lifters.
Can someone get this combo to pump out 600HP?

Hey Intolerant One, just a heads up; you can't build an HP500 from a 454 block. You would need a 502 block. The 454 block cannot be bored that big.
Dave
:(

Hey Intolerant1
Either do a search or email Waterfoul.
If you mimic his set up, you will be more than happy.
I did my 454s nearly the same as his in 99 and I am.
There's a guy in the area that can get super deals on Federal Mugal engine parts (pistons, cams, bearings).
email me and I'll get you his number.

[email protected]

502 crate motor with a warranty is sounding better and better.