l98 roller rockers help.
Thread Starter
Racer
Joined: Feb 2006
Posts: 423
Likes: 0
From: san antonio TEXAS
l98 roller rockers help.
Hey just ordered the lt4 hot cam for my 89 covette l98 (stock heads) just wondering what kinda roller rocker i should go with. I call a shop here in town and they told me that i couldn't becouse i have a/c and i would need bigger valve covers. is this true i want to jump to 7/16 stud. I fond a couple on ebay if this is not true Item number: 8043092792. thank for your input.
Pro
Joined: Mar 2005
Posts: 746
Likes: 0
From: Rochester PA
I like Comp Cams Pro Magnums, but a lot of ppl. on here like Crane and Harland Sharp, both of which are aluminum. Regardless of which brand you choose, the drip tabs must go, and some dremeling on the inner 2 holddown supports. I am sure if you do a search, you will find more than enough info to help you decide. Good luck.
Rich K
Rich K
Team Owner
Joined: Jan 2003
Posts: 20,318
Likes: 248
From: Summerland B.C. Canada
Crane gold is a good choice from what iv'e read. One reason is you don't have to narrow the bolt towers on the valve covers to make them fit. Drip tabs will probably need a trim.
I ended up with crane energizer rollers because they were on the jobbers counter, lookin at me everytime i was there.
I ended up with crane energizer rollers because they were on the jobbers counter, lookin at me everytime i was there.
Drifting
Joined: Aug 2005
Posts: 1,645
Likes: 90
From: Sparks NV
Did self-aligning 3/8ths 1.6/1 RR's on mine. Did require trimming the drip tabs but otherwise the original valve covers work just fine.
Not to high-jack the thread but I've meant to ask if anyone else has noticed that the valve train is noisier with the RR's. I've readjusted them once but the noise is about the same. Anyone else notice this?
Not to high-jack the thread but I've meant to ask if anyone else has noticed that the valve train is noisier with the RR's. I've readjusted them once but the noise is about the same. Anyone else notice this?
Racer
Joined: Aug 2004
Posts: 377
Likes: 1
From: Redmond Wa
Yep.. For whatever reason rollers make more noise. I also adjusted mine a couple of times using different methods. Same amount of noise.
I installed Comp Cams Pro Magnums a little over a year ago.
I installed Comp Cams Pro Magnums a little over a year ago.
Originally Posted by ccmano
Did self-aligning 3/8ths 1.6/1 RR's on mine. Did require trimming the drip tabs but otherwise the original valve covers work just fine.
Not to high-jack the thread but I've meant to ask if anyone else has noticed that the valve train is noisier with the RR's. I've readjusted them once but the noise is about the same. Anyone else notice this?
Not to high-jack the thread but I've meant to ask if anyone else has noticed that the valve train is noisier with the RR's. I've readjusted them once but the noise is about the same. Anyone else notice this?
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Originally Posted by AZC4Guy
I wetn with Crane Gold Race roller rockers.
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Drifting
Joined: May 2005
Posts: 1,302
Likes: 1
From: Tomahawk WI
Originally Posted by rodj
The Crane golds are apparently the same as the LT4 rollers except they have a 3/8 stud where as the LT4's have a 10mm stud
Thread Starter
Racer
Joined: Feb 2006
Posts: 423
Likes: 0
From: san antonio TEXAS
Originally Posted by AZC4Guy
Maybe, All I know is that the stock rockers on my l98 were very noisy so I went to 1.6 roller rockers and am very happy w/ the results.
Last edited by johnwayne; Mar 9, 2006 at 11:27 PM.
Instructor
Joined: Apr 2005
Posts: 248
Likes: 0
From: Mount Clemens Michigan
you dony necessarily have to swap or modify valve covers... i had someone fabricate an aluminum spacer between the heads and covers and they fit perfectly... also the comp cam por magnums are a prety good choice... and if you running anything under 400Hp 7/16ths isnt really needed just an fyi to save ya money .. you can if you want so it will set you for choices down the road 
Team Owner
Joined: Jun 2001
Posts: 26,196
Likes: 0
From: Orlando FL
St. Jude Donor '08-'09
I upgraded to roller tip rockers in mine when i rebuilt the motor.. they fit fine under the stock covers. I believe the full on roller rockers are just a tad too big though...
Burning Brakes
Joined: Jan 2005
Posts: 847
Likes: 1
From: spring branch texas
Originally Posted by johnwayne
I'm try to find a good machine shop in san antonio. Any suggestions?
Moreno and Son's over off Military and Marbach have been doing my machine work sence the 80's never had a problem with anything the've done.
Just had a set of heads done last week, for a 3 angle valve job/resurfacing and new guides cost me $120
Looks like your over off 151 so you are real close to them.
Last edited by js292; Mar 10, 2006 at 03:33 PM. Reason: info
Thread Starter
Racer
Joined: Feb 2006
Posts: 423
Likes: 0
From: san antonio TEXAS
Originally Posted by js292
Moreno and Son's over off Military and Marbach have been doing my machine work sence the 80's never had a problem with anything the've done.
Just had a set of heads done last week, for a 3 angle valve job/resurfacing and new guides cost me $120
Looks like your over off 151 so you are real close to them.
Just had a set of heads done last week, for a 3 angle valve job/resurfacing and new guides cost me $120
Looks like your over off 151 so you are real close to them.
Burning Brakes
Joined: Jan 2005
Posts: 847
Likes: 1
From: spring branch texas
Originally Posted by johnwayne
I know the place. How did the 3 angle vavle job come out? See any difference on power?
Thread Starter
Racer
Joined: Feb 2006
Posts: 423
Likes: 0
From: san antonio TEXAS
Originally Posted by The Bus
I just went thru all this agony. Summit sells a polished AL valve cover that clears the rockers. Oh, I used Crane 1.6 roller rockers and a Comp cam.
Burning Brakes
Joined: Mar 2005
Posts: 1,164
Likes: 5
From: Middle Earth
Originally Posted by The Bus
I just went thru all this agony. Summit sells a polished AL valve cover that clears the rockers. Oh, I used Crane 1.6 roller rockers and a Comp cam.