What length PR with PRC 59cc heads?

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Apr 7, 2009 | 09:10 PM

hurley711

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What length PR with PRC 59cc heads?

Anyone else running PRC 2.5 heads milled to 59cc and a TR224 cam? What size PR should I be lookin gto run with this setup? Here are all the details.

TSP PRC 59cc milled heads
LS7 lifters
TR224 cam on 114
Replacement stock GM head gaskets

I currently have aftermarket hardened stock PR in there, do I have to wait til everything is ripped apart to check what length I will need and then order or is anyone running this setup?

Thanks

Apr 7, 2009 | 09:35 PM

SweetS10V8

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http://texas-speed.com/shop/item.asp?itemid=913

Apr 8, 2009 | 05:27 AM

vettenuts

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From: Little Rhody

Measure

Apr 8, 2009 | 05:31 AM

PREDATOR-Z

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From: BFE

7.350 (but as vettnuts said, better measure)

Apr 8, 2009 | 06:20 AM

hurley711

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I am going to measure but here is the deal. I'd like to get a rough idea of what length others with my setuo are using, so that when I order the PR length checking kit, I can also order a set that will most likely match my setup so I have them instead of ordering twice and waiting 4-5 days twice to get them from TSP. If they aren't what I need I can always send them back. Currently I have the 7.4 hardened rods in there and I'm guessing they aren't going to work. Is it a good bet that if anything I'm going to need shorter PR then 7.4?

Last edited by hurley711; Apr 8, 2009 at 07:13 AM.

Apr 8, 2009 | 09:39 AM

johnster

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From: jackson tn

im running 7.350 with a .040 head gasket 58cc, 5.3 head, stock rockers ls7 lifters

Apr 8, 2009 | 05:20 PM

hurley711

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Just ordered the measuring kit I will post results in a few weeks when I get done

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Apr 21, 2009 | 06:52 AM

hurley711

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Guys can I do any significant damage driving this thing home 10 miles with the 7.4 rods?

Apr 21, 2009 | 08:55 AM

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bigboykilroy

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From: Aurora, Ohio

possible.

Apr 21, 2009 | 09:22 AM

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Sales2@Texas-speed

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From: Texas!

Responded to your PM, but forgot to ask what part number was on the Comp package you received. We only stock one pushrod length checker PN typically, and I just want to rule out the chance that you got the wrong one! Let me know.

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Apr 21, 2009 | 10:49 AM

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slothy

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From: St. Clair Shores, Mi.

7702-1 is the part number you need - should be on baggie

Apr 21, 2009 | 11:57 AM

#13

PREDATOR-Z

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From: BFE

Quote:

Originally Posted by hurley711

Guys can I do any significant damage driving this thing home 10 miles with the 7.4 rods?

You could bottom out the lifters (Too much preload), I would not risk it.

Apr 24, 2009 | 07:45 AM

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Frans96SS

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From: New Castle Del.

It needed A 7.350... the 7.400 was WAY to long.

Apr 24, 2009 | 07:47 AM

#15

PREDATOR-Z

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From: BFE

^^Bingo^^

Apr 24, 2009 | 10:13 AM

#16

Jason 98 TA

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Sorry Comp sent us the wrong pushrod checkers, but no worry I had my guys eat a little bit of overnight to get the correct checker to you asap. We always try to take good care of the customer even when the manufacturers mess us around!!

Definately need to get the correct pushrod checker. My bet is 7.350" will work, but a little bit of checking can go a long way. Don't worry it'll be worth the wait...

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Apr 24, 2009 | 11:07 AM

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Frans96SS

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From: New Castle Del.

Quote:

Originally Posted by Jason 98 TA

Definately need to get the correct pushrod checker. My bet is 7.350" will work, but a little bit of checking can go a long way. Don't worry it'll be worth the wait...

7.350 worked good jason. We will be dynoing the car later today. We did a similar set up a few weeks ago with those heads and they made great power for the set up.