[imposter]

so i pulled the rear plug on the mystery 455 motor and the back of the cam has no brand name just numbers anyone know how to decipher this itoa a 72 455 with 7M5 heads

A143 and 921370

[imposter]

more mystery cams off the shelf looking to put into a stock 72 455 with 7M5 heads (yes i know there junk)

[Kenth]

Originally Posted by imposter

more mystery cams off the shelf looking to put into a stock 72 455 with 7M5 heads (yes i know there junk)

Cam stamped 986 is a Crane blueprint 041. (RAIV).

Crane Fireball 294 B is
Manufacturer's Name Crane, Part Number H-294, Advertised Duration 294/304, Duration @ .050 238/248, Lift With 1.5 Rocker Arms .502/.525, Lift With 1.65 Arms .553/.578, Lobe Separation Angle 114°, Intake Centerline 109°.

Crane Blazer 288-2H is
Manufacturer's Name Crane, Part Number H-288-2, Advertised Duration 288/296, Duration @ .050 226/234, Lift With 1.5 Rocker Arms .458/.473, Lift With 1.65 Arms .504/.520, Lobe Separation Angle 114°, Intake Centerline 109°.

Very nice camshafts for a high compression engine. 9.5:1 - 10.0:1 w/iron heads and 10.5:1 - 11.0:1 w/alu heads.

JMHO

[25stevem]

X2 with the above.

By 1972 the 4bbl factory Cam in a non 455 HO motor was the 067.

If you have driven this motor stock with the compression that those heads produce then pick you Cam choice carfully if you going to keep the same compression and rear gearing.

[Tandyman]

Kenth, your info for the Fireball and Blazer is a bit off from the 1980 Crane catalog.



I built a 455 with 96 heads (milled .040 )and Fireball 294B , stock QJ intake back in 1981 and it was a great combo just like you said . Kept those parts and thinking of a nostalgic build some day .

Glenn

[imposter]

heres the deal, im putting this mystery rebuilt 455 into a 66 bonneville 4 door, the motor is clean through and through, it has 7M5 heads no idea of pistons or deck height or valve springs i haven't taken off the heads i have a street dominator intake with a 800 holley and th400 with 2:75 1st gear and 2:93 rear end gear, im trying to get a converter built but they wont build one without cam specs so im stuck i do'nt want to take apart this motor at this time but need to give the converter guy some starting point in the future i plan to put #62 heads on this motor and wondering out of the 3 cams i have listed would work best i know the car is no rocket but id like it to get in front of the karens of the world

[Jim Moshier]

Out of these 3 camshafts listed and what you are putting the engine in with 2.93, the Crane Blazer 288-2H is the best IMO

Jim