what is the cam grind specs for a stock L98 motor?? if i add 1.6 ratio roller rockers will the pushrods rub the head? will there be any major gain? mathematically speaking i should gain aprox. .030-.040 of lift!!!???

 

Welcome aboard thirdgen.org.

This tech article is linked from the thirdgen.org homepage https://www.thirdgen.org/mods3 . You'll gain about .028"-.029" lift.

89's used self aligning rockers - the pushrod holes in the heads are bigger, so you shouldn't have any problems with 1.6:1 rockers. Just be sure to get self aligning 1.6:1 roller rockers.

 

GM changed the L98 cam specs over the years, so in order for me to post the specs for your engine I need to know the year.

Jake

 

His userinfo says '89.

 

We shouldn't have to look that up to answer his question, right? Shouldn't it be S.O.P. for an OP to identify his engine rather than leave it to the responder(s) to search to find it?

Might as well start him off in the right way otherwise we may be dealing with this from now on.

Just my suggestion.

Jake

 

Hey, face, from now on, put pertinent information in your post so we don't have to look for it.

 

CAM 88-89 L98 10066049 In/Exh Dur@.050" 207'/213' Lift (w/1.5) .415"/.430" LobSep 117'


You can just add it to your signature so that each time you post that info will readily available to everyone. See what I mean?

I like trying to help members, but if you can make it a little easier for an old guy like me, I'd appreciate it. Every little bit helps, LOL

Jake

 

sorry that i took so long to get back to you! ive been off for a while, thanks for the cam specs jakejr