Center bolt valve covers n roller rockers
#1
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Location: Kingsport, TN
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Car: 84 Z28
Engine: 383
Transmission: T-56
Axle/Gears: 342 Posi
Center bolt valve covers n roller rockers
I bought some center bolt valve covers for my new engine which I had head work done, in which I put some aluminum roller rockers on them. The valve covers hit the rockers before there all the way down. There just stock height. Will tall center bolt valve covers clear the rockers? Ive seen where people have bought the thinner rockers. I dont have that option. So what have u guys done to use the roller rockers n get the center bolt valve covers to clear? So any help r advice would b great. Thanks HUFF
#2
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Car: 89 Formula
Engine: 383 SBC/HSR
Transmission: 700R4
Axle/Gears: 3.73
Re: Center bolt valve covers n roller rockers
I believe they make spacers and adapters (either or) for installing Low-profile valve covers on cars with aluminum roller-rockers. The adapters allow you to keep your heads the same, but switch to side bolt valve covers which you would need the taller ones.
Check Jegs, or Summit catalog and you should find some there.
Check Jegs, or Summit catalog and you should find some there.
#3
Supreme Member
Re: Center bolt valve covers n roller rockers
I bought some center bolt valve covers for my new engine which I had head work done, in which I put some aluminum roller rockers on them. The valve covers hit the rockers before there all the way down. There just stock height. Will tall center bolt valve covers clear the rockers? Ive seen where people have bought the thinner rockers. I dont have that option. So what have u guys done to use the roller rockers n get the center bolt valve covers to clear? So any help r advice would b great. Thanks HUFF
I used a die grinder to trim the support so it cleared the rocker body.
#5
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Re: Center bolt valve covers n roller rockers
#6
Supreme Member
Re: Center bolt valve covers n roller rockers
You can see from a couple of these shots how much material needs to be removed from the support. It's only one side (the side that goes between the rocker bodies) however most of the 'lip' has to be removed.
Hope it's helpful.
Hope it's helpful.
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#8
Supreme Member
Re: Center bolt valve covers n roller rockers
Stock steel covers because I spent my money on go fast parts.
#10
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#12
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Re: Center bolt valve covers n roller rockers
skips white performance... he has a store on ebay. the attached pic is of his perimeter valve covers for 73$ but idk if he still carries the center bolt covers. i might have gotten one of the last pairs months ago. mine are polished and look great and are really really light greats welds too
#13
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Re: Center bolt valve covers n roller rockers
Adapters are pricy. You got two options:
1. Take a dremel to the valve cover supports and clearance them.
2. Get tall valvecovers.
I've got guideplates and non self-alligning rockers on a set of Vortecs. I'm guessing you're in the same predicament. I liked tall valve covers so it was an easy choice.
Some people run into problems where the alternator bolt hits the valvecover (when they're tall) but mine have room there, so no problems at all for me. I just always get it zapped when I pull that side off the car with the battery connected. THat bolt arcs straight to the valve cover every time. So I disconnect the battery. And then I always forget to reconnect it... Good times.
1. Take a dremel to the valve cover supports and clearance them.
2. Get tall valvecovers.
I've got guideplates and non self-alligning rockers on a set of Vortecs. I'm guessing you're in the same predicament. I liked tall valve covers so it was an easy choice.
Some people run into problems where the alternator bolt hits the valvecover (when they're tall) but mine have room there, so no problems at all for me. I just always get it zapped when I pull that side off the car with the battery connected. THat bolt arcs straight to the valve cover every time. So I disconnect the battery. And then I always forget to reconnect it... Good times.
Last edited by InfernalVortex; 07-17-2008 at 04:57 AM.
#14
Supreme Member
Re: Center bolt valve covers n roller rockers
InfernalVortex
Whats your hood clearence like? It looks like you use a low profile element.
My RPM Air Gap pushes the filter lid into the hood. The dropped base I use means I need a 3" element in order to clear the choke housing.
Whats your hood clearence like? It looks like you use a low profile element.
My RPM Air Gap pushes the filter lid into the hood. The dropped base I use means I need a 3" element in order to clear the choke housing.
#15
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Re: Center bolt valve covers n roller rockers
It's a drop base with a 1.5 inch filter. It was a Summit brand K&N ripoff. Probably a K&N filter anyway. But my hood clearance is fine. I dont know how much more clearance I have, but the way it is, it doesnt hit.
I think my intake is actually taller than the air gap by 1/8 of an inch or so. It's a GMPP Vortec dual plane intake.
I'm not sure I'll keep that filter setup, though. THe filter will be kpt but I may get a different base/lid. The lid comes way too close to the top of the carb so I worry about it limiting my airflow pretty bad.
I think my intake is actually taller than the air gap by 1/8 of an inch or so. It's a GMPP Vortec dual plane intake.
I'm not sure I'll keep that filter setup, though. THe filter will be kpt but I may get a different base/lid. The lid comes way too close to the top of the carb so I worry about it limiting my airflow pretty bad.
#16
Supreme Member
Re: Center bolt valve covers n roller rockers
It's a drop base with a 1.5 inch filter. It was a Summit brand K&N ripoff. Probably a K&N filter anyway. But my hood clearance is fine. I dont know how much more clearance I have, but the way it is, it doesnt hit.
I think my intake is actually taller than the air gap by 1/8 of an inch or so. It's a GMPP Vortec dual plane intake.
I'm not sure I'll keep that filter setup, though. THe filter will be kpt but I may get a different base/lid. The lid comes way too close to the top of the carb so I worry about it limiting my airflow pretty bad.
I think my intake is actually taller than the air gap by 1/8 of an inch or so. It's a GMPP Vortec dual plane intake.
I'm not sure I'll keep that filter setup, though. THe filter will be kpt but I may get a different base/lid. The lid comes way too close to the top of the carb so I worry about it limiting my airflow pretty bad.
It's either a cowl hood (but I don't like the added attention it brings) or I'll modify an OEM twin element filter housing (TPI sytle) to mate with a standard 14" open filter housing but replace the 14" filter with some sheet steel or aluminium cut to a height that'll allow some hood clearence.
Got to have some cold air coming in!
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