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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

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Old 02-14-2014, 01:14 AM   #1
brennan1994
 
Join Date: Oct 2013
Vehicle: 1995, mustang gt
Location: wisconsin
Posts: 25
Default springs for gt40 heads

Hey everyone. I have a 95 gt that I bought with the explorer gt40 head swap. I don't think the previous owner upgraded the valve springs and I've heard the stock springs from an explorer aren't strong enough for the stock mustang cam.

So id like to upgrade the springs, but I'm not planning on doing a camshaft upgrade anytime soon.

So far I found these:
http://www.alexsparts.com/sb-ford-gt...it-hyd-roller/

They appear to be a straight swap for the stock springs.

With the stock cam, anyone have any good suggestions for a stock valve spring upgrade on my gt40s?

Any personal experience?

Would the Alex parts springs be fine?

Thanks everyone
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Old 02-14-2014, 08:04 PM   #2
mongolchuck
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Join Date: Feb 2007
Vehicle: 1991 LX Convertible
Location: IA
Posts: 147
Default

I used these http://www.latemodelrestoration.com/...gs-Upgrade-Kit from trick flow. The machinist who did the valve job on my heads said it was the best kit he's used. They're also good for higher lift cams if you eventually do a cam swap.
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Old 02-15-2014, 12:06 AM   #3
dwb91lx
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Vehicle: 1991 Ford Mustang LX 'vertible
Location: Idaho
Posts: 93
Default

Quote:
Originally Posted by brennan1994 View Post
Hey everyone. I have a 95 gt that I bought with the explorer gt40 head swap. I don't think the previous owner upgraded the valve springs and I've heard the stock springs from an explorer aren't strong enough for the stock mustang cam.

So id like to upgrade the springs, but I'm not planning on doing a camshaft upgrade anytime soon.

So far I found these:
http://www.alexsparts.com/sb-ford-gt...it-hyd-roller/

They appear to be a straight swap for the stock springs.

With the stock cam, anyone have any good suggestions for a stock valve spring upgrade on my gt40s?


Any personal experience?

Would the Alex parts springs be fine?

Thanks everyone
If you are keeping the stock H.O. cam...Alex will likely adjust seat pressure from 120# down to 110# (that's what he did for mine)...So decide on cam before you commit.
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1991 Mustang 5.0 LX Convertible, Deep Jewel Green w/ White Top & Leather Seats, JBA Headers, FlowMaster American Thunder CatBack Exhaust, BBK C.A.I., SCT/Bama Tuned, 4Spd AOD & 3.73's...
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Old 02-15-2014, 12:23 AM   #4
tinman
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Join Date: Aug 2004
Vehicle: 84 Mustang, 59 Ranchero
Location: Arizona
Posts: 4,059
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Whatever you do use a new set of split locks on those springs......
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Old 02-22-2014, 01:19 AM   #5
brennan1994
 
Join Date: Oct 2013
Vehicle: 1995, mustang gt
Location: wisconsin
Posts: 25
Default

So trick flow or Alex parts?

Also what else do I need to put in new springs and is there a way to do it without taking the head off the engine?
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Old 02-22-2014, 01:19 AM
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