94_lt1_4mula

iTrader: (2)

hello.
i'm doing a cam install on my car and i am installing a gm847 cam with CC NSA 1.6 RR... i'm wondering if its necessery to use guideplates, if so what brand and what part number

moehorsepower

iTrader: (3)

If you are using self aligning rockers then NO you do not need them.

3pnt4maro

iTrader: (2)

he said it was an NSA roller rockers..meaning non self aligning..yes you will need guideplates

Pampered-Z

I've used GM guide plates with no alignment problems. Forget the number buy they were $3 each.

94_lt1_4mula

iTrader: (2)

thanx i ended up buying the gm guidplates from my local gm dealer for $4 each

Bersaglieri

iTrader: (13)

Hope the GMPP ones work better for you than they did for me. Mine were all chewed up after a while. I highly suggest Isky-Adjustables.

-Dustin-

ZONES89RS

iTrader: (25)

I just use whatever SBC guide plates i find, if they chew up or grind into the pushrod you did not center them correctly when they were installed.

Bersaglieri

iTrader: (13)

These arent SBC Heads.

-Dustin-

ZONES89RS

iTrader: (25)

Then WTF are they? BBC or LSx heads? LT1 heads use the same GPs.

Bersaglieri

iTrader: (13)

Use what you want buddy. SBC guideplates arent the same. Just trying to keep people reading this from screwing up their motors.

-Dustin-

Scrapin'4.8

iTrader: (3)

They actually are. Go to summit and look at the summit brand part numbers for LT1 guideplates, then go and look at the part numbers for regular SBC guideplates, same two part numbers.

Bersaglieri

iTrader: (13)

If you think Summit knows whats going on with LT1 motors you are sadly mistaken. I used to live close to one and go there weekly or more. I had to correct them on many issues with parts. I asked to speak to their best LT1 guy and found out just how much they dont know about those motors.

Again everyone use what you want. Dont say you werent warned. Even the GMPP ones arent real accurate, but they are decent. Problem is they arent hardened. Hardened pushrod vs non hardened steel = guideplates messed up and rockers screwing up your valvestems since they come out of alignment.

-Dustin-

Scrapin'4.8

iTrader: (3)

K, well don't use summit then. How about comp cams, parts numbers on their own website show them all being the same, and then theres different ones for the LSx heads. Not trying to argue or anything, just saying that i know several people that have used summits brand and still to this day nothing is wrong.

9formula4

iTrader: (5)

I am running the GMPP gudieplates on my current motor with no problems nor wear. The GMPP plates ARE hardened and I used comps 7808 hardened pushrods also.

socal

iTrader: (1)

Yes you need guideplates with NSA rockers hint the non part.

crane cams make's the ones for GMPP as well as there performance cam's i.e. the 847, lt4 hot cam kit, lt4 roller rockers ect... like MSD makes GM's performance ingnition box

this is the 847 cam the grind is inscribed on the front even if you bought it from gm like i did

http://www.cranecams.com/index.php?s...41&lvl=2&prt=5

use what you want adjustables are better but the lt1 head is a sbc head and the parts are inerchangable

dhdenney

iTrader: (53)

If you don't use guideplates you will get this: