[DaleO]

Originally Posted by The Champ

FWIW - I have the Crower 60243 in my 30 over 455 with 96 heads, running 9.5 - 1 compression with a Quadrajet in my 4spd '64 GTO convertible. Have had this combo in my car since 2013 and am happy with it. Originally had 3.42 gears in my 12 bolt, but with all the torque I switched to 3.08's as I now spend time on the Interstates going to some shows as well as cruising on 2 lane roads locally.

Champ, for your gut feel what's your opinion on a 60243 in a 9:1 433 and 3.55's? Too much? Ok with Rhoads? "...but with all the torque..." and your gear change I might be ok with a few less cubes?

I'm contemplating between this and UD 280/288.

[The Champ]

Dale

I am not an expert, but with the OP running the same heads in a 462, I felt comfortable giving my personal experience.

FWIW - a 433 isn't that much smaller than mine. My gear change was not about poor performance - easily lit the tires up at will with the 3.42's. I just am spending more time on interstates and really not worried about smoking the tires. With the 3.08's I can still smoke the tires when/if I want to. With my 2.56 first gear, my effective gear ratio is 7.9.

If anything, I'd consider going to 9.5:1 compression. Cliff stated he had experience with the 60243 in a 400. Maybe he'll chime in.

[DaleO]

Thank you Champ.

Sorry all for taking this off course.

[ponjohn]

OK...

Old combo

463
9.25-1
96 heads cleaned up
rpm
850 QFT
XE284 cam - I KNOW.

Made 443hp / 532 t. .Nosed over n dyno at 4700 rpm.
The valve springs were not enogh for the XE grind. It had a gnarly idle. I believe there are better choices for a cam.

It propelled a 3720lb car to 11.98 / 109.5

The car devoloped a thrust issue but I intended to try the 60919.

[64speed]

The Crower 60919 in my 467 is amazing

[steve25]

You mean it’s amazing now that you solved your fuel supply restriction issue.

[rohrt]

My 455 #96 head combo was an attempt to get the most power in a drivable form. Its a lot of fun, but I would still enjoy it if it was a bit more tame.

455 + .030 #96heads (1971) 2.11 1.77 home Ported
Harland Sharp 1.5 Rollers
Forged TRW pistons/stock rods shot peened arp bolts.
Stump puller on 114 lsa, (H10 Ultradyn cam )
Stock 1969 4bb intake
7028268 750 Q-jet By Cliff Ruggles
Longbranch manifold D ports with 2.5" outlets to 2.5" exhaust with X cross over connected to VT mufflers.
Th400 Automatic Conti 10 inch Tight
8.2 Eaton posi 10bolt with 3:31 now 3:08s
Car is a 68 Firebird Convertible weight is around 3600lbs

[hurryinhoosier62]

Originally Posted by Kenth

Welcome to the Forums!
I´m using a factory 744 cam in my 462 w/96 heads, TH400 and 3.55.
It´s mellow as a kitten.
If i´d built it today i would have chosen the 041 cam with/regular lifters and Crower 68404-16 valve springs, to reduce the wild spinning tires at take off.

Can’t go wrong with a 455 zero decked with 96 heads, Rhodes lifters and an 041 or 041 clone cam! I would like to see how the 041 clone roller cam Paul Spotts has would work with this combo.