I'm looking into getting a set of 1.6 roller rockers. I've heard of guys running into clearance probs with the stock valve covers.
Is this a common problem or can you get by with the stock covers?

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'88 RS (originally 2.8)
-350, .040 over, vette alum. L98s, stock tpi.
-305 injectors & chip
-TES headers & edelbrock cat back
-3.73 gears, 700r4.
Best with 2.8-17.4@77mph
Best with 305-15.0@93mph
Best with 356-13.7@101mph
on a 2.050 60 ft.
(Damn the 2.8!)

 

I think it depends on what you are getting. If you are talking about roller tip rockers, I would say no. If you are looking at full roller, you may run into some clearance problems. I have heard of guys running full rollers under stock covers. Unfortunately I can't remember what brands work though.

Matt

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irocet@hotmail.com

drive.to/Stang_Kilr

88 IROC-Z -- 350 L-98, 700R4, Flowmaster, K&N, MAF Sceens Removed, Airfoil, March Pullies, Comp Cams Magnum 1.6 Roller Rockers, Bosch Platinum Plugs, Accel 8.8 mm Wires, Hypertech Cap & Coil, Hypertech Chip, Hotchkis Strut Tower Brace, One Loud Stereo!

 

The answer is yes and no, most roller rockers will not fit under the stock covers. You can either machine them to fit or buy new ones that have more clearance, or you can buy rockers that fit. There are three that I know of, Crane Gold rockers make a set just for centerbolt covers. The rocker is narrow and fits, Comp Cams has there pro magnum stainless that fits i think it is 1318, i would check first. They also make a roller tip rocker that fits centerbolt as well. I would personlly spend the extra buck and get either the Crane Golds or the Pro Magnum, both will be about $300. Good luck.

 

Harland Sharp full roller .487 lift cam. no clearance probs. whatsoever with stock centerbolts only $180 as opposed to 300 for crane golds

 

Same here.... harland sharp full rollers under stock type valve covers.

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92 Z28 5.7
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Trick Flow 23° heads, Comp Cams XR270HR-10 cam, Accel intake base + ported TPI,
TES headers, Flowmaster catback, MSD ignition, #24 SVO injectors, 1LE aluminum driveshaft.

Click here to see pics of my car.
Check out our car club Truspeed
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Thanx guys,
now if i can figure out whether to get self alligning or not cause i already have guidplates.

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'88 RS (originally 2.8)
-350, .040 over, vette alum. L98s, stock tpi.
-305 injectors & chip
-TES headers & edelbrock cat back
-3.73 gears, 700r4.
Best with 2.8-17.4@77mph
Best with 305-15.0@93mph
Best with 356-13.7@101mph
on a 2.050 60 ft.
(Damn the 2.8!)

[This message has been edited by '87FAKE-IROC-Z (edited May 10, 2001).]

 

If you have pushrod guideplates get non-self aligning rockers.
BTW I used ProForms 1.6 ratio full rollers under stock centerbolt covers with .525 lift (Got good deal on them, only reason I use them)

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-Joseph
ASE Master Automobile Technician
Scoggin-Dickey Chevrolet

1967 Camaro (Vortec Heads, GM ZZ4 intake manifold, ZZ4 roller camshaft)
1992 Firebird (Weiler Vortec Heads, LT4 Hot Cam, GM ZZ4 Intake, Edelbrock 750, eventually will be Ram-Jet)

 

I havn't had any problems with full rollers (not crane narrow bodys either) fitting under the stock covers.

All I had to do was get large vice-grips and crush the PCV baffle a little.



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'88 Camaro RS 2.8L
'88 Formula 350 (Too many mods to list...)

 

a word to the wise!
don't use proform roller rockers.they break

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1991 banditt2 #130 of 600
Project 350 TPI Banditt II
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