I'm putting the Vortec Top end kit on my stock 198 engine, I wanted to know if I need to change my stock cam for this set up? If so what cam would be a good swap, I dont want to have to change my lifters and push rods either?

link
http://www.jegs.com/i/GM-Performance...8060K/10002/-1

 

You are aware thats a carb set up, correct?

 

yea i'm going to put the tpis runners and ported plenum with the setup instead of the carb, I hate carbs

 

The intake manifold coming in the set you linked only works with a carb, it won't work with anything tpi. If you want to go vortec/tpi you need to pick up a set of vortec heads seperately and then a vortec tpi base manifold such as this http://tpiparts.net/inc/sdetail/2944 . There is no vortec tpi/head package sold to my knowledge.

As for a cam, Im not too sure to be honost, from wht I've read though you'll want to make sure the cam has greater than 113 degrees of lobe seperation and don't go overboard on the duration. Im sure somebody else will come around and chime in with a more specific cam. Doing a search on 'l98 cam' would probably turn up some good results too of what people have tried.

 

doing vortec heads, slp runners, vortec base, 1.6 rockers and a gm hot cam would give you 354hp 410tq at the motor..... i read the article and have a very similar combo... the gm hot cam would be a nice cam for your setup..

 

thanks everybody!