i am considering them b4 a cam change. 89GTA 5.7 tpi 700r4 3.27 posi. will they bolt right on without any "rubbing" problems? according to jegs "yes" need second opinion...r they worth 300$ thanks for the info.... later ed r they the only ones that work with centerbolt valve covers?

 

i hear they work fine with stock valve covers. i have a set of comp 1318s on order. they will work too. lighter and stronger than the crane gold.

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-=ICON MOTORSPORTS=-
1st & 3rd

 

I had to buy different valve covers (Moroso CB) for my '89 IROC when I tried to put on the 1.6 Crane Gold RRs. There was about an 1/8" gap. This was with a higher lift cam than stock, but I don't think the lift difference was enough to make it gap that far. The orgional covers might work if you do some modifications to them (don't know exactly what kind, but have heard of other people getting by with it).

Sparks a flyin'

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1989 L98 IROCZ, Bored .030 over,400 Crank,Dart PRO 1 Heads 200cc intake,ZZ3/ZZ4 Cam,Crane 1.6 RR,Edelbrock 3860 Hiflo TPI Manifold, AS&M LTRs, Edelbrock 58MM TB, Ported Plenum, TCI Reverse Pat Man Valve Body, SVO 24# injectors,TCI Streetfight Stall Converter, 3.23 Gears on Auburn Pro Posi, Some Suspension Mods

 

I have 1.6 Crane Gold rockers with stock valve covers running 482/496 lift. You shouldn't have any problems, just make sure you get the rockers made for centerbolt heads.

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Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
12.57 @ 111 mph.
12.04 @ 114 mph (50-hp nitrous).
http://members.optushome.com/au/downunder1/rides/willie/willie.html

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

 

Here's another vote for "They'll work". I've got 'em on my car with the stock cam (so like .400" lift). Just make sure you get the ones for the Centerbolt valve covers.

-Mark W.
'88 SC Camaro w/ 305 TBI

 

Did you guys have to modify the valve covers any? Just curious as to why mine didn't work and I had to cough up over $100 for the Moroso's. I'm running .510I and .540 E lift, could that make that much of a difference?

As I was sitting here typing this, something occured to me. I have Dart heads, maybe there is something different with the Valve cover rails on these heads (maybe lower, don't know) that caused my problem.

Oh well, if it worked for them, it'll probably work for you.

Sparks a flyin'.

 

No modification what-so-ever. Just put them on and turned the engine over by hand pressing down on the valve cover to make sure they cleared. There was no contact so I went ahead and torqued 'em down. I've got the aluminum L98 heads, I'm not sure if that makes a difference.

-Mark W.
'88 SC Camaro w/ 305 TBI

 

To save yourself money, I would go with Proforms rollers. There half the price and they work with our centerbolt covers, they just recommend using a thicker valve cover gasket, just in case. They don't know what size cam your running.

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88'TA 305TPI 330HP, NATURALLY ASPIRATED, PASSES N.J. EMMISIONS. "I AM JUST THAT GOOD"