gregrob

iTrader: (8)

Are any of you guys using or have feedback on the ne "ultra" pro mag rockers from comp.

I was reading their schpeil in hot rod I think and they sound pretty good.

Benefits of an aluminum rocker with the strength of steel.

shbox

Are they even out yet? Comps site says "coming soon".

James Montigny

iTrader: (13)

Summit has em listed for SBF and BBC with a 4/5 ship date.
Didn't see any SBC, but they sure are adventising the heck out of them in magazines.

http://store.summitracing.com/partde...5&autoview=sku
http://store.summitracing.com/partde...5&autoview=sku

wrd1972

iTrader: (12)

Wondering bout these too. I am thinking of ditching the pro-mags for something more quiet. I have been told the Scorpions or maybe these new Comps would do the trick.

96capricemgr

iTrader: (1)

Summit has a well documented history of pushing back ship dates. Remember the MSD opti? Got pushed back a whole year a couple weeks at a time. Edelbrock intake was the same way.

They also put ship dates a few weeks out on special order parts rather than telling you they are special order.

I still happily use Summit, just saying you have to understand how they work.

I ordered a pipe bend a couple months ago, ship date was a few days out, took a month to get.

gregrob

iTrader: (8)

I dunno if theyre out yet or not, like said though the magazines are advertising the crap out of them.

whammer33024

iTrader: (6)

supposed to be quieter huh? might have to look into those

James Montigny

iTrader: (13)

Absolutely true.

wrd1972

iTrader: (12)

I have heard the aluminum Scorpions are significantly more quiet than the promags. However the promags are the strongest. In my setup, the aluminum ones should work fine.

whammer33024

iTrader: (6)

i'm going with a 396 and don't want to hurt anything...so maybe i should stick with the pro mags.

i thought your car had like 412 rwhp?

wrd1972

iTrader: (12)

Did on a Superflow dyno corrected to STD. Got the sheet to prove it. That dyno is local and I only use it for measuring and has a rep for reading high as I have recently learned. The other funny thing is that dyno reads lower torque than the one i tune on.

The dyno that is used to tune is a DynoJet and is a hundred miles away. New SAE numbers are in my sig. I trust this dyno and the tuner far more than the local Superflow.

Clearly that Superflow dyno must be "happy" high because 383RWHP SAE on the DynoJet is far more realistic for my setup. The SAE numbers on the DynoJet were 393RWHP 371RWTQ BTW.

Another case of two dynos being worlds apart.

whammer33024

iTrader: (6)

i always kind of thought the 412 seemed high as well with the LE1 cam and through a 9"

wrd1972

iTrader: (12)

Its what the sheet said. So whats a guy to do?

ss.slp.ls1

iTrader: (36)

I have promags. I really don't care how loud my valve train is, and for that matter, it's not very loud anyways.

whammer33024

iTrader: (6)

wrd...i wasn't arguing with you. the numbers you have now seem more realistic for your setup. when i was contemplating a 355 build, i was looking at your setup as a reference to be honest.

good to know ss.slp...i've heard some bad things aobut scorpions as well so i'll probably just stick with the pro mags

wrd1972

iTrader: (12)

I understood what you said. No arguement took place. FWIW, I am man enough to admit & revise my sig when it was proven not right as opposed to some on the board who STG they have the factory freak that makes 20RWHP over what seems real.

flyinZ

iTrader: (15)

Owners of the Pro Mags, did you have to modify your factory valve covers at all? Or just bolt on and run'em..I had the Crane Gold 1.6's and didn't have to..

StealthFormula

iTrader: (35)

Yes the Pro-Mags have a wide body so you will need to modify the factory valve covers to get them to clear.

flyinZ

iTrader: (15)

What do you modify? could you snap a pic of it? Or at least explain what to modify on the VC?

James Montigny

iTrader: (13)

You either flatten or cut out the supports.
http://www.golenengineservice.com/html/lt1_facts.html