PRC .650 Lift Dual Springs

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08-25-2011 | 10:52 AM

#31

budhayes3

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PT's Slowest Truck

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From: Hackensack, NJ

Quote:

Originally Posted by 06Sierra2

you mean to say you got over 62k on a set of springs?

I'm curious about this too...

Roger (AKlowriderZ71) has over 40k on his Crane duals so far, and plans to try and get another 20k out of them before swapping them out...

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08-25-2011 | 10:59 AM

#32

Holty

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From: Pittsburgh, PA

Quote:

Originally Posted by 06Sierra2

you mean to say you got over 62k on a set of springs?

I don't see why that would be hard to believe. Unless someone has a cam with a huge lift in it the springs should last a LONG time. Stock springs last 200k miles or more.

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08-25-2011 | 11:09 AM

#33

Superado

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From: Dallas, Georgia

Quote:

Originally Posted by 06Sierra2

you mean to say you got over 62k on a set of springs?

Quote:

Originally Posted by budhayes3

I'm curious about this too...

Roger (AKlowriderZ71) has over 40k on his Crane duals so far, and plans to try and get another 20k out of them before swapping them out...

Quote:

Originally Posted by Holty

I don't see why that would be hard to believe. Unless someone has a cam with a huge lift in it the springs should last a LONG time. Stock springs last 200k miles or more.

Yes.
Stock springs had 219K miles on them when I pulled the perfectly fine running 5.3L to install the LS1.
The LS1 was built using a set of used (mileage unknown) Patriot Performance heads w/ Patriot Gold valve springs.
I have put 62K+ miles on these springs myself, since then.
I'll pm the guy I bought them from and see if he remembers how many miles he put on them.

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08-25-2011 | 11:39 AM

#34

06Sierra2

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From: el paso, tx

what cam was used?

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08-25-2011 | 11:43 AM

#35

Superado

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From: Dallas, Georgia

Quote:

Originally Posted by 06Sierra2

what cam was used?

Patrick G spec'd cam based on Thunder Racing proprietary Comp Cam core
218/230 .605”/.604” 112LSA +3 advance (with 1.7 ratio rockers)
Comp XFI/XFI high lift lobes

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07-09-2013 | 09:33 AM

#36

Redchevy1540

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Quote:

Originally Posted by Sales2@Texas-speed

You'd be surprised how many are at funky installed heights due to improper retainer machining too! If people actually checked this stuff and the general public was more educated about the issues there, they'd sell ALOT fewer spring kits! Also, check free height on their springs after a handful of thousands of miles, and you'd be amazed how much they sag and loose height/pressure over time! That was one of the reasons we got away from offering their stuff back in the day and started PRC to offer a better product and have the quality control in house!

I git the prc 675 tyey call for 1.810 .....my exaust measured 1.800 an my intake measured 1.790 is that close enough or should I adjust them

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07-12-2013 | 08:41 AM

#37

ITR0055

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Old thread, but for what it's worth, I have had these in my PRC heads for about 20k miles with no problems. Comp Cam 212/218 .558/.563 I plan on running them until the motor goes.

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