Roller Rockers - Best by Test

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Jul 21, 2006 | 06:13 PM

#21

Corvette Kid

Large Impressive Member

Joined: Jul 2003

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From: Good health is merely the slowest possible rate at which one can die

St. Jude Donor '04-'05-'06-'07

Quote:

Originally Posted by geezel

I've had both... With the Crane golds it was just removing the drip tabs. When I went to the wider Comp Pro Mags I had to grind each side of the bolt towers as well as crimp the crap out of the breather units on the underside of the valve covers. No big deal really.

Well that shows that it depends on the covers. When I had my original composite LT1 covers on, there was never a side clearance issue. Now I have polished Morosos on it and there were no clearance issues at all with the rockers, just the alternator!

I have 1.6 Pro Mags BTW.

Jul 21, 2006 | 08:54 PM

#22

vinnies87

Thread Starter

Le Mans Master

Joined: Aug 2003

Posts: 9,884

Likes: 3

From: Magnolia Mississippi

St. Jude '03-'04-'05-'06-'07

Quote:

Originally Posted by USAsOnlyWay

I have the Summit roller rockers, they are Scorpions repackaged though...shh don't tell anyone!

Also, I have CC Magnum roller tips with studs for sale....
http://forums.corvetteforum.com/show....php?t=1444274

I might be able to split it up, but this would be a really nice boost up for your motor.

Thanks for the offer, but I think i'll go with what i said in the post. Its a great price for the whole setup, but i'm not at that point in the engine yet. Interior Done, Engine clean and upgraded, NEXT is the paint job this winter, then I plan on getting block and go for a clean new engine build.

Jul 21, 2006 | 10:39 PM

#23

rodj

Le Mans Master

Joined: Aug 2000

Posts: 8,838

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From: Australia

"i don't really know WHICH ONE to use. Street only, no racing, best performance, Strength, best bang for the buck...
Thanks"

IMHO I think you are doing yourself out of some $$ by going to alum full rollers.
The CC magnums @ $190 (self aligning ) will do more than adequate for what you want.Or buy the cheaper $150 non-self aligning ones and some guide plates.

More than happy with the CC Magnums in my street / strip engine.

Jul 21, 2006 | 11:10 PM

#24

madmatt9471

Team Owner

Joined: May 2006

Posts: 21,473

Likes: 356

From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----

Quote:

Originally Posted by vinnies87

Matt:
Thanks thats the info i was looking for...

Your welcome! Let us know how all turns out! It'll feel better after the install you should be able to feel it in the seat and feel almost like a lighter gas pedal!

Thanks,Matt

Jul 23, 2006 | 02:12 PM

#25

vinnies87

Thread Starter

Le Mans Master

Joined: Aug 2003

Posts: 9,884

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From: Magnolia Mississippi

St. Jude '03-'04-'05-'06-'07

Quote:

Originally Posted by rodj

Point: but i will be doing more engine work along the way, and i believe from experience that you should get the best that will serve its purpose into the future, cheap is fine and you get what you pay for,,,, but, I've never gone the cheap mode on anything.

Jul 23, 2006 | 08:00 PM

#26

Strick

Race Director

Joined: Feb 2003

Posts: 11,672

Likes: 20

From: Lake Wylie SC

I installed Crane's Gold Self Aligning rockers about 4 years ago and I'm a "spirited driver" and auto-X participant. Don't forget the hardened pushrods. They do a good job. BTW, they look really cool when the valve covers are off.

Jul 23, 2006 | 08:46 PM

#27

rocco16

Race Director

Joined: Dec 2002

Posts: 13,348

Likes: 233

From: SCMR Rat Pack'r Charter Member..Great Bend KS

Quote:

Originally Posted by vinnies87

just wanting to add a little boost to the eng performance, and as i understand they should prob add 10-15hp.

Just adding 1.5 roller tip rockers will gain you zero in the hp dept.
Just adding 1.5 roller fulcrum rockers will gain you about 2 hp.

You'll need to go up to 1.6 ratio full rollers to gain anything close to 15 hp.

Larry
code5coupe

Jul 23, 2006 | 10:35 PM

#28

Plasticman

Race Director

Joined: Nov 2000

Posts: 10,340

Likes: 664

From: Beverly Hills (Pine Ridge) Florida

Quote:

Originally Posted by rocco16

The Comp Magnum roller tip rocker should add a very slight increase in power due to the slightly higher lift ratio (1.52 vs. the stock lift of 1.50 - which in all truthfullness is actually even lower - some say as low as 1.40).

However, the true worth of the roller tip rockers is the lessened wear on the valve guides and valve stems (due to the side loading the stock sliding rocker arm impart on the valve stems).

Plasticman