Headers size?

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Sep 23, 2008 | 03:08 AM

Jonathan502

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Heel & Toe

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From: Växjö kronoberg

Headers size?

Hey!

What are the biggest size of prime tubes and collector you could have
on a 1969 whith removed ac, with a ZZ502?

Thanks..

Sep 23, 2008 | 07:06 AM

Rolling Thunder

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From: Paducah KY

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My Stahl headers are 2 1/8th inch primaries.

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Sep 23, 2008 | 07:09 AM

Vesa

Burning Brakes

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From: Finland

I have Hookers nr2225 with no problems (NO AC). 255/50/17 tires needed for enough ground clearance...

Last edited by Vesa; Sep 23, 2008 at 07:12 AM.

Sep 23, 2008 | 07:47 AM

427Hotrod

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Unless you're really spinning it high..solid roller etc.....a set of 1-7/8" or 2" will most likely be what you need. 2-1/8" will be a little large.

I think most of the ZZ502's require a little flange grinding to clear head bolts with the stock position ex ports....but no big deal.

I know a Forum member with a set of 2" Hookers with 3" collectors that are Jet Hot coated are for sale. I need to check to see for sure though...they might be 1-7/8"...I just saw them last week for an instant.

JIM

Sep 23, 2008 | 09:46 AM

Jonathan502

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From: Växjö kronoberg

Quote:

Originally Posted by Vesa

I have Hookers nr2225 with no problems (NO AC). 255/50/17 tires needed for enough ground clearance...

I was thinking of these aswell. I have 255/60-15 so the ground clearance sould be the same!

What kind of model should I choose? Coated, polished??

Sep 23, 2008 | 02:15 PM

Vesa

Burning Brakes

Joined: Mar 2004

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From: Finland

Quote:

Originally Posted by Jonathan502

I was thinking of these aswell. I have 255/60-15 so the ground clearance sould be the same!

What kind of model should I choose? Coated, polished??

I have the black ones...but if I would buy them today I definitely would take the thermal coated ones!!!

My engine is 540 cid and I never rew it over 6500rpm.

Sep 25, 2008 | 03:00 AM

Jonathan502

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From: Växjö kronoberg

I have 2" prim, and 3" collector today and I think there is no space for lagrer tubes, are you sure 2 1/8" will fit with a gen V block??

Sep 25, 2008 | 05:19 AM

Vesa

Burning Brakes

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From: Finland

Quote:

Originally Posted by Jonathan502

I have 2" prim, and 3" collector today and I think there is no space for lagrer tubes, are you sure 2 1/8" will fit with a gen V block??

Absolutely sure...those Hookers 2225 are diffrently routed and fit better than my previous Hedmans with 2" primaries. No modifications done to 2225s but I had to do 2 dents into the Hedmans.

If you have original AC car from which all Ac stuff has been thrown away...then you need, like I had to, to modify the AC/Heater box from the bottom. That was no big job. If original no AC car then no problems at all...
http://finnshark.com/gallery/showima...&c=3&userid=22

http://finnshark.com/gallery/showima...&c=3&userid=22
Actually i had to remove a bit more from the box than what you see in that picture...

Last edited by Vesa; Sep 25, 2008 at 06:53 AM.