SN95 Stud girdle on gt40 heads

J

Jimmer009

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Jan 4, 2022

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Mar 9, 2023

#1

• Mar 9, 2023

• #1

Hi all, so I'm putting together a 351w for a buddy. He had the heads redone at a machine shop. I'm installing them and the girdles won't fit.

I can get most of the rocker lock downs to start threading. There's 2 in the middle that hit the roller rockers.

I see the shop that redone the heads heli colied where the 7/16 studs go. But all rockers line up great on the valves. Any ideas if doing something wrong??? It's a pro comp part number that is for a sbf.

If you need more info let me know. I'm stumped

 

AeroCoupe

lube between the nut and the face. I know my lubes

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Oct 28, 2001

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Claremore, OK

Mar 10, 2023

#2

• Mar 10, 2023

• #2

So with valve girdles the rocker arm nuts are different than standard ones in that they are taller. You install them and run the valves then lock the poly locks down. When installing the girdles there should be bolts that allow the girdles to open up so you can fit them on all of the rocker arm nuts. Adjust the girdle so that the top of it fits flush to the top of the nuts and tighten the bolts on the girdle. You can see the bolts on the top of these girdles.

 

Reactions: General karthief

Bullitt347

I have been doing it wrong this whole time

15 Year Member

Mar 23, 2007

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Middle of Maine

Mar 10, 2023

#3

• Mar 10, 2023

• #3

I question the need for the girdles on GT40 heads on a 351W. The engine will not spin enough rpm to make them necessary.

 

Reactions: Monkeybutt2000

J

Jimmer009

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Jan 4, 2022

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Mar 12, 2023

#4

• Mar 12, 2023

• #4

I agree on questioning the need for a girdle. My buddy bought it and wants to use it. It is gonna some no prep time.

I have the lock bolts backed out a bit. I'll try removing them and see if that gives me what I need cause I'm Not far off. This is a old pro comp girdle. So it does not have a split all the way down it. Just screw in locks. And yes I got the longer rocker studs nuts whatever there called

 

J

Jimmer009

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Jan 4, 2022

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Mar 13, 2023

#5

• Mar 13, 2023

• #5

So I don't want to make a new thread. But a guy at work just got a 82 four eye. He asked about cheap shorty headers. After looking them up only speed master has them. But they are on back order till June. Does anyone else know of shorties headers that around 120$ or are those days gone??? I only see them for 170$

 

Mstng93SSP

You have a nice rear end there Dave.

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Nov 29, 1999

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Mar 13, 2023

#6

• Mar 13, 2023

• #6

LMR has them for $159. That's a good price and from what I have seen they are actually good headers for the price.