383TAGTA

Which one would you used and why?

Is there a clearcut winner or is it a Mini-ram vs. Superam type discussion which both work good in their intended applications?

Does either one give up reliabilty for all out racing gains?

Would you notice any power gains from one vs the other if installed in the same engine?

FWIW, I plan to choose one for a 383 AFR Mini-ram engine pushing 450h.p N/A and which I intend to drive daily.

Which one fits the bill?

BTW, The Crane Gold are cheaper than the Pro-Magnums when comparing 1.5 3/8 non-self aligned applications.

RB83L69

The Crane is aluminum, the Comp is steel. Which would you rather have for a loaded moving part?

You probably really need 1.6s for the application you mention. The more lift you can get, the better.

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"So many Mustangs, so little time..."
ICON Motorsports

JETHROIROC

I second the above. Aluminum's fatigue life just wouldn't cut it for me unless I wasn't going to run it much at all (race only).

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1990 IROC 350
Mods: Too busy trying to make it run right to mod it.
Airfoil, Dynomax cat-back, MSD coil, 180 t-stat, Bald Eagle tires,
Hypertech fan switch, Accel 23# injectors, Holley AFPR, ported plenum,
Ported Daytona Yellow stock base, Moroso valve covers, other stuff,
Ruger P95DC, hot wife, new oil filter, thick rubber floormats, no cats.
18.0 @ 85MPH since I'm one big-a$$ MF
"It's better to have and not need than to need and not have."

AlkyIROC

Cost wise the Crane's are cheaper. Unless you're building a full race engine, Crane Energizers are good enough. They're built the same way the Golds are but have a smaller trunion. The Crane Blazer rockers are cast aluminum and I wouldn't even recommend them unless you're on a tight budget and Energizers are only slightly more and a lot better.

The Comp Pro magnums are better than the Golds but also cost more. Although they feel heavier, they actually have 5% less weight forcing down on the valve. Because of the design the trunion is larger than on the Golds. Comp guarentees them for life against breakage and will rebuild them if needed.

I now have a set of Pro Magnums on my race engine.

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Follow my racing progress on Stephen's racing page
and check out the race car

87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block

Best ET on a time slip: 11.242 altitude corrected to 10.89
Best MPH on a time slip: 121.52 altitude corrected to 125.89
Altitude corrected rear wheel HP: 497.9
Best 60 foot: 1.546

Racing at 3500 feet elevation with a typical race day over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley

Vader

The Crane's weren't even good enough for Chevrolet Powertrain engineers for use in the stock LT4 engines - they were redesigned and strengthened for the Chevys. The Comps are chrome-moly steel, and are effectively lighter in the reciprocating mass areas - where it counts.

They are also only about $40.00 CHEAPER than the Crane aluminums, depending on how well you shop (PAW). Why not save money and get a better rocker?

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Later,
Vader
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"Get UP - Drop the bombshell!"
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