rocker arms on L98
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 810
Likes: 4
From: Austria
rocker arms on L98
hi all..
need rocker arm suggestions..
i want to keep the stock centerbolt valve covers
does the L98 have self aligning rockers??
i have guideplates in the cylinder head.. and im a little bit confused
ok, here it is..
i have put in a Comp cams Xtreme energy, upgraded springs, 7.300 pushrods, and now, im searching for rockers..
i found CCA-1417-16
what do you think about?
will they fit under it??
thank you!!
need rocker arm suggestions..
i want to keep the stock centerbolt valve covers
does the L98 have self aligning rockers??
i have guideplates in the cylinder head.. and im a little bit confused
ok, here it is..
i have put in a Comp cams Xtreme energy, upgraded springs, 7.300 pushrods, and now, im searching for rockers..
i found CCA-1417-16
what do you think about?
will they fit under it??
thank you!!
Melting Slicks
Joined: Sep 2003
Posts: 2,775
Likes: 0
From: 1,000,000,001 Posts
Re: rocker arms on L98 (corvette90)
I am curious on the answers this will get also,,,,, I am thinking I am going to put some 1.6RR on mine soon, but just dont know enough about it.... :banghead:
Safety Car
Joined: Oct 2001
Posts: 4,763
Likes: 2
From: Connectivette
Re: rocker arms on L98 (corvette90)
I am in the process of freshing up my valve train as I type this. I'm going with ...........
1.6RR Pro Magnums from Comp Cams(self aligning)
new springs
retainers
locks
pushrods.
valve seals
My '88 L98 came with guide plates whose function is more to ease the assembly at Bowling Green than it is to guide the pushrods.
Your stock rocker arms are self aligning.
I bought the self aligning style RR to use on my stock 3/8 studs and I am pulling the stock guide plates. I noticed during my teardown that my pushrods where rubbing up against the guide plates.
If you want to use your stock valve covers, which you can, you'll have to lop off your drip tabs and narrow down the bolt channels.
1.6RR Pro Magnums from Comp Cams(self aligning)
new springs
retainers
locks
pushrods.
valve seals
My '88 L98 came with guide plates whose function is more to ease the assembly at Bowling Green than it is to guide the pushrods.
Your stock rocker arms are self aligning.
I bought the self aligning style RR to use on my stock 3/8 studs and I am pulling the stock guide plates. I noticed during my teardown that my pushrods where rubbing up against the guide plates.
If you want to use your stock valve covers, which you can, you'll have to lop off your drip tabs and narrow down the bolt channels.
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 810
Likes: 4
From: Austria
Re: rocker arms on L98 (chucks88)
ok, you mentioned with 1.6RR
i want to go to 1.52 ratio, i hope this doesnt affect power or idle in any way...
do i have to cut the drip tabs also, or can i leave them..??
thank you
i want to go to 1.52 ratio, i hope this doesnt affect power or idle in any way...
do i have to cut the drip tabs also, or can i leave them..??
thank you
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 810
Likes: 4
From: Austria
Re: rocker arms on L98 (corvette90)
ohhh sorry..just seen a fault of myself..
i don´t mean roller rockers, i meant roller TIP rockers...
stamped steel ones with a roller tip...CCA-1417-16
thank you
i don´t mean roller rockers, i meant roller TIP rockers...
stamped steel ones with a roller tip...CCA-1417-16
thank you
Racer
Joined: Nov 2003
Posts: 475
Likes: 0
From: Philadelphia PA
Re: rocker arms on L98 (corvette90)
I installed a set of Comp Cams self aligning 3/8 stud 1.6 roller tip rockers #1418-16 on my 89. They are the same heigth as the factory 1.5s so they should fit without any modification to the factory valve covers. If you have factory guide plates (the manual says 90's did not have them) you should also have hardened push rods. I would replace the push rods with a new set to be on the safe side. Dan
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Le Mans Master
Joined: May 1999
Posts: 6,519
Likes: 1,305
From: Windermere FL
Re: rocker arms on L98 (corvette90)
Crowler 1.6 Full Rollers
They will fit under the stocker covers - you have to drimmel off the drip tabs. But I went with a cool set of Billet Specialities covers while I was in there.
They will fit under the stocker covers - you have to drimmel off the drip tabs. But I went with a cool set of Billet Specialities covers while I was in there.
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 810
Likes: 4
From: Austria
Re: rocker arms on L98 (Flame Red)
thank you all..
good news for me...so i will order the comp cams 1417-16, since they will fit under my stock covers..
and also new pushrods, stronger ones than factory..
thank you!!!
good news for me...so i will order the comp cams 1417-16, since they will fit under my stock covers..
and also new pushrods, stronger ones than factory..
thank you!!!
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Re: rocker arms on L98 (corvette90)
I see the 1417-16 being for a 4.3L engine. I think you'd want 1412-16 for your 350.
Are you dead set on 1.52s? I don't know how much improvement you'll see going with only a rollertip rocker in 1.52 ratio. Modifying the stock valve covers isn't too hard.
If cost is an issue then stick with the 1412-16. If it isn't then you may want to consider....
1301-16: 1.52 pro magnum, full roller, $265
1302-16: 1.60 pro magnum, full roller, $265
Are you dead set on 1.52s? I don't know how much improvement you'll see going with only a rollertip rocker in 1.52 ratio. Modifying the stock valve covers isn't too hard.
If cost is an issue then stick with the 1412-16. If it isn't then you may want to consider....
1301-16: 1.52 pro magnum, full roller, $265
1302-16: 1.60 pro magnum, full roller, $265
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 810
Likes: 4
From: Austria
Re: rocker arms on L98 (scorp508)
hi..
@ scorp508...hmm..what i ve seen the CCA 1417-16 will fit Chevrolet 265-400cui, with centerbolt valve covers, self-aligning...says online catalog at compcams.com, also says at summit
i think, the 1412-16 are the same, but not self aligning....
i want to go with 1.52, since i will run a cam with higher lift, and dont want to get clearance troubles, or such things...
thank you anyways...
@ scorp508...hmm..what i ve seen the CCA 1417-16 will fit Chevrolet 265-400cui, with centerbolt valve covers, self-aligning...says online catalog at compcams.com, also says at summit
i think, the 1412-16 are the same, but not self aligning....
i want to go with 1.52, since i will run a cam with higher lift, and dont want to get clearance troubles, or such things...
thank you anyways...
Le Mans Master
Joined: Dec 2002
Posts: 5,270
Likes: 3
From: Seattle Area WA
Re: rocker arms on L98 (MrNuke)
I've been running 1.52 rr Comp Camp Magnum Rockers for over a year and the fit without any issues.
Thank might clear up some confusion! :thumbs:
Edit: Just saw you posted at the same time that you ordered ones that said they would fit centerbolts...Have fun! :thumbs:
[Modified by USAsOnlyWay, 4:29 AM 11/18/2003]
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Re: rocker arms on L98 (corvette90)
hi..
@ scorp508...hmm..what i ve seen the CCA 1417-16 will fit Chevrolet 265-400cui, with centerbolt valve covers, self-aligning...says online catalog at compcams.com, also says at summit
i think, the 1412-16 are the same, but not self aligning....
@ scorp508...hmm..what i ve seen the CCA 1417-16 will fit Chevrolet 265-400cui, with centerbolt valve covers, self-aligning...says online catalog at compcams.com, also says at summit
i think, the 1412-16 are the same, but not self aligning....
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 810
Likes: 4
From: Austria
Re: rocker arms on L98 (scorp508)
Hi Scorp508
ive checked twice, Compcams, and summit, and they say, the CCA-1417-16
fits 87-97 Engines, 305-350cui..
i know, you have way more experience, in parts and engines, but since i have these items ship to Austria..which is not cheap, and takes time, i always check very carefully before ordering...
thank you for your statements, its great to have people who will talk and help :cheers:
oh, and yes you are right..when swapping some numbers, you come directly to the 4.3ltr engines...tried it, but dont ordered it :D
thanks again :)
ive checked twice, Compcams, and summit, and they say, the CCA-1417-16
fits 87-97 Engines, 305-350cui..
i know, you have way more experience, in parts and engines, but since i have these items ship to Austria..which is not cheap, and takes time, i always check very carefully before ordering...
thank you for your statements, its great to have people who will talk and help :cheers:
oh, and yes you are right..when swapping some numbers, you come directly to the 4.3ltr engines...tried it, but dont ordered it :D
thanks again :)
