ARP P/N 100-1701 has a 1.90 effective stud length.

ARP P/N 134-7103 has a 1.77 effective stud length.

Which ones do I need?

7/16 NSA Comp Ultra Pro Mag Rocker Arms

Patriot Dual Gold springs

GMPP or TFS guideplates

5-16 Pushrods

Stock Lifters

Just to state everything I'll be using.

 

1.77 is what you need. I think the 1.9 are for big blocks

 

134-7103 (1.77") is what I use with my comp pro mags without issue. Go with TFS guideplates, that's what I did.

 

get TFS guideplates (part # TFS-30400623-8)

 

Thanks guys I'm going to order the shorter ones, and TF guideplates just to be sure. I already have the GMPP's but getting mixed signals on them so I'll just hang on to em or sell em if someone wants to try them.

 

just curious where you got your rockers from?

 

Jegs. Theyre backordered a couple weeks from summit. Jegs said "ships today" so I went with them. Ended up getting everything but gaskets and guideplates from jegs. Got those from summit and the timing chain from gmpartsdirect.com

 

I got mine from summit they shipped the same day 8-11 (rockers Pro Mags) will be here today

 

also got the TFS guideplates (part # TFS-30400623-8)

 

I got the "Ultra" pro mags, that would be the difference.

 

I see i am thinking of sending back the Pro Mags and getting those, still haven't decided

 

^you should! It would be a wise choice!

 

You shouldn't need anything longer than 1.77 with stock head castings and stock-length pushrods.

 

I went with ARP's Pro Series 1.90 for more poly-lock thread engagement.

Jake

West Point ROCKS!

 

I agree on swapping for the ultras. I think the price is close or a littlw cheaper and they look pretty badass on paper.

W the trouble a few have started having w pro mags I'm glad I went we the ultras.

I think a good lightweight, ridgid valvetrain benefits any setup.

The Ultras also have a lifetime warranty.