So...so confused

darkhorse50 · March 22nd, 2009, 10:05 PM

I finally am sending my gt40 heads out to the machine shop. I need to know a good spring kit to run on these heads, what kind of valve seals should I run "if I even need new ones" or if anything else needs to be addressed. Im trying not to sink a bunch of cash into these heads. There are so many damn options out there, its made me really confused. Ohh and one more thing that has even confused me more, I'v been told I need to run a seat pressure of atleast 130lbs on my cam COMP Cams® - Cam Details
Some one please help

e3sean · March 22nd, 2009, 10:09 PM

tell the machine shop the cam and if they are any good they can tell u the spring u need. also you want VITON valve seals and yes replace them they are only 20.00 and come with the valve job.

M L Struck · March 22nd, 2009, 10:16 PM

+1 if your shop is any good they will hook you up with the correct parts and a good price

1slo5.0 · March 23rd, 2009, 10:18 AM

Originally Posted by darkhorse50

I finally am sending my gt40 heads out to the machine shop. I need to know a good spring kit to run on these heads, what kind of valve seals should I run "if I even need new ones" or if anything else needs to be addressed. Im trying not to sink a bunch of cash into these heads. There are so many damn options out there, its made me really confused. Ohh and one more thing that has even confused me more, I'v been told I need to run a seat pressure of atleast 130lbs on my cam COMP Cams® - Cam Details
Some one please help

If you do the job correctly you are going to have cash stuck in the heads. At minimum the heads will need to be surfaced, valve job, valve springs, seals, retainers and locks. There might be some bad valve guides and valves too. I'd make sure the machine shop checks all of the valves and guides closely so you don't run into problems down the road.

darkhorse50 · March 23rd, 2009, 01:30 PM

thanks for the input guys, I forgot to ask, Double valve springs require more machine work correct? The valve spring outer diameter for these heads is 1.40in??? and the valve seals are .500in diameter in the shoulder?

93mustank · March 23rd, 2009, 02:54 PM

Here you go sir
Spring UPGRADE !! More than just sticking them in there.....

March 22nd, 2009, 10:05 PM	#1
darkhorse50 Regular 87 GT 14.2@98.something Join Date: Apr 2008 Location: N.E Ohio Posts: 118 iTrader: 0 reviews	So...so confused I finally am sending my gt40 heads out to the machine shop. I need to know a good spring kit to run on these heads, what kind of valve seals should I run "if I even need new ones" or if anything else needs to be addressed. Im trying not to sink a bunch of cash into these heads. There are so many damn options out there, its made me really confused. Ohh and one more thing that has even confused me more, I'v been told I need to run a seat pressure of atleast 130lbs on my cam COMP Cams® - Cam Details Some one please help

March 22nd, 2009, 10:09 PM	#2
e3sean I Post Entirely Way Too Much 1988 lx 9.68@142 Join Date: Nov 2007 Location: goldsboro NC Posts: 5,596 iTrader: 0 reviews	tell the machine shop the cam and if they are any good they can tell u the spring u need. also you want VITON valve seals and yes replace them they are only 20.00 and come with the valve job. __________________

March 23rd, 2009, 02:54 PM	#6
93mustank Banned Join Date: Aug 2008 Location: Phoenix,AZ Posts: 3,014 iTrader: 1 reviews	Here you go sir Spring UPGRADE !! More than just sticking them in there..... __________________ PeteAndersonRacing.com

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March 22nd, 2009, 10:16 PM	#3
M L Struck Hardcore Enthusiast 85 GT/86 SVO/2010 GT500 Join Date: Oct 2008 Location: Rossville IN Posts: 1,183 iTrader: 0 reviews	+1 if your shop is any good they will hook you up with the correct parts and a good price

March 23rd, 2009, 01:30 PM	#5
darkhorse50 Regular 87 GT 14.2@98.something Join Date: Apr 2008 Location: N.E Ohio Posts: 118 iTrader: 0 reviews	thanks for the input guys, I forgot to ask, Double valve springs require more machine work correct? The valve spring outer diameter for these heads is 1.40in??? and the valve seals are .500in diameter in the shoulder?

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