Is this cam any good?
 

Hi guys, in the middle of freshening up my 454 Alpha engine and wondered if this cam would be any good. Not looking for major performance, but a little would be nice!


Crane Cams Commander Camshaft

CCH-306-2

134571

Application

1967-1995 Chevrolet V8

396-402-427-454 ci

Hydraulic Lifters

Duration @ .050" Int/Exh: 246/254

Degrees Advertised Duration Int/Exh: 306/314

Degree Lobe Seperation: 112

Open/Close @ .050" Cam Lift Int/Exh: 16 64 / 50 10

Lash Hot Int/Exh: .000/.000

Gross Lift Int/Exh: .571/.585

Rough idle, performance usage, marine performance

Good upper RPM HP, 4000-4400 cruise RPM.

10.5 to 12.0 compression ratio advised.

Auto with 3500+ converter

Duration is to big unless you have dry exhaust and plan on spinning it 6500 rpms. And have money to keep replacing the Alpha outdrive everyweekend.

fixx
 

+1 too much duration,,if your looking for off the shelf cam for a 454 my customers and i have been vary happy with the isky 270/280 mega hyd cam..you can use it with stock manifolds and has a nice loppe idle but not to bad,,has real good midrange acceleration..

http://www.flatlanderracing.com/iskycamsmarine.html

Mrfix, how much horse power you getting with that cam?

Way too big of a cam for a 454. Better choice is a Crane 134241.

You need to have upgraded exhaust to run a bigger cam or you will get reversion.

Fixx
 

i dont know the exact hp but in a 23' checkmate the boat ran 76 on the gps @ 5200 rpm's..same cam in a hallett with port work to the heads but through a volvo drive the boat picked up 4 mph,,in a 23'? mach one the boat went from 62 mph to 67 mph..it all depends on your set up in the engine..it has a nice idle and a snappy throttle response and pulls hard in every motor i put it in..

You can make 420hp with the cam I posted. Mill the heads .030, Holley 800 carb, Air gap intake and aftermarket exhaust.
I gave these specs to somebody a while ago and they dyno'd it at 425HP at 5000rpms. I used to spin mine to 5400rpms so it was probably closer to 435hp.
The cam is very close to the Merc 454/420hp specs.

I just bought this cam for my rebuild will I have and clearance problems with stock flat top pistons and 1.7 roller rockers?
Thanks
Jason

You won't have clearance issues with those cam specs.