Is there enough clearance with the stock valve covers for 1.6 rr's? If not, will the LT4 composite valve covers work and does the LT4 passensger side cover have enough clearance for the alternator? And one last question, should I get self aligning or non?

 

There is not enough clearance for CCpromags or the cranes gold /gmpp 1.6s. However, you can easily clip the supports out with tinsnips and they will work. The covers for an LT4 should work since it used crane gold rockers. I haven't heard of any alternator problems with those and many people do that conversion.

 

It depends on what kind of RR you get. You will probably have to cut some out of the stock covers.Yes LT4 valve cover will work without modifiying and im pretty sure the will clear the alternator. It will quiter also from what i hear, but the are too expensive for my blood..

 

The LT4 covers are built such that either one will clear the alternator.

 

I'm using COMP "pro Magnum" non self-aligning 1.6 rockers. My valvecovers are GM Performance cast aluminum, which didn't require any modification for the rockers, but I did have to do a little "creative clearancing" on the back of the alternator. Not too bad, though...Not noticeable, and I did it with a hand file.

For pictures, check out my web page. Click on either of the top left pictures, on the opening page.

As for non self-aliging vs. self aligning? I did non, just to make it more universal. I will warn you, though...There's only 1 company that makes "bolt-on" guide plates, and that's GM Performance (GMPP). No, COMP doesn't make them for the LT1. The LT1 has different valve spacing than the typical SBC.

Frank

 

I agree with that. I think combination motorsports also has guideplates made for LT1s. I don't believe they are the GMPP ones but rather just some they had made custom to their specs. Maybe they are the GMPP ones though.

 

The GMPP plates are less than $20 a set, and you can order them through any GM Dealership

Frank

 

Thanks for the great info guys. I was wondering if anybody had part#'s for the gmpp rr's and guide plates. Do you think I can order these from Jason Cromer too? I agree the LT4 covers are a little too rich for my blood. I'll probably cut out the supports myself.

 

how much are the lt4 valve covers?

 

LT4 valve covers part numbers:
left-side 12552321 - $74.57
right-side 12552322 - $79.89

Prices from http://www.gmpartsdirect.com/

"These covers are black plastic and fit all LT1 and LT4 Chevrolet Engines." - GMPartsDirect.com

 

You need more than just the valve covers to make them work. Here's all that's needed. The prices in the link are from a few years ago. I bought a set from Dal a couple of months ago for around $200.

http://www2.hawaii.edu/~wilsonch/lt4valvecover.htm