I have an 86 Iroc with the Following Mods done atm: Headman Headers and Y-pipe, Gutted Cat, Hooker Catback, K@N Filters, Gutted Airbox, MAF screens removed, Ported Plenum, and smog stuff gone. Im going to open the heads up to replace those leaky valve guids(do all 305's smoke at start up?) and figured i would go ahead and do a timing chain replace and swap in a new cam. I was looking at the Summit TPI cam but they used it with a stock moter( I've got some light mods) i was wondering if this cam would be ok and give me some good gains and if not do you guys have a suggestion on other cams, and how they would run...its a daily driver but i would like to have some lumpy idle(just love the sound) but still be able to drive it everyday...price is also a consideration...Thanks

 

I wouldn't go with a summit cam, I was in the same spot you are almost, I want to do a cam swap and was going to get a summit cam, but people on here, said the technology for the cams was from the 80s. So I figured why skimp on a few bucks on something that can really wake an engine up. I plan on getting a Comp Cams, they seem to be among the best from what the experts on here say.

 

80's tech? .488 lift at same duration as Lunati's .480 lift with less adv duration? Summits not all that bad in my book and it seems to run a-ok, although their patterns are only on a 114 LSA angle which kinda sux.... but wait, thats great news for TPI, dual plane, NOS street and SC cars in a way...

Although I believe its Comp Cams that has a cam with the same .050 lift, same .050 duration with less adv duration that would make it better IMO, it was over 2.5x more $$$

If you can nit-pick over flat hydraulics than just get a friggin solid roller if cost is no object. I'm sure as hell ain't paying over $200 for a flat cam, no dis-respect.