Foster382

Ok I ended up getting a 70's block cast #3970010 2 Bolt Main, machined bored, ect.. I need to know what type of cam and lifters the block can use, hydro. Roller, hydro. Flat tap. Ect and roller or flat tap lifters.
I'll be using it with 1993 heads with 1.5 rockers

vetteoz

iTrader: (13)

Will be flat tappet cam and lifters stock ; factory roller cam didn't come out until late '80's

Can be converted to a roller cam and lifters but expensive ($300+ for lifters alone )

Foster382

I can't just put in roller lifters from my engine and get a new roller cam of does some machining have to be done to it?

DeathStarr89

iTrader: (1)

Comp's retro-fit roller setups work well. I had the XR270HR K kit in my '77 350 block and other than having to add pushrod guideplates it worked great.

http://www.compperformancegroupstore...Code=K12-422-8


Little pricey, but it's actually about $300 cheaper now than 10 years ago.

InfernalVortex

iTrader: (4)

You just need to get special retrofit roller lifters. Not that big of a deal. But you definitely cant use factory style roller lifters with the spider.

Foster382

How about hydro. Flat tap; would that fit like the stock back then? I wanna keep it cheap and besides it's going to be a 355 Tbi when I finish it, maybe even a Tpi if I feel like doing the wiring.

InfernalVortex

iTrader: (4)

I would strongly suggest going with a roller cam. Its one of my bigger regrets about my build.

The extra power and peace of mind is worth it. If you insist on going with a flat tappet cam at least do some research about zinc levels in modern oils and proper break in procedures.