Quad rods for a 80?

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Mar 16, 2004 | 11:44 AM

8T8T2

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Racer

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From: Golden Colo.

Quad rods for a 80?

I'm need to increase my primary jet and rod size from 71 jets/41 rods to 74 jets/43 rods which was recommened by Lars. I understand that from 1976 up rods are not interchangable with the older units. Having trouble finding primary rods for the newer quads. Anyone have any suggestions or info. where I might purchase these?

Mar 16, 2004 | 08:07 PM

8T8T2

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Racer

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From: Golden Colo.

Re: Quad rods for a 80? (8T8T2)

Anyone with info that can help me? Am I totally off base thinking that from 76 up required different type rods then earler years?

Mar 16, 2004 | 08:11 PM

comp

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From: eville in

Re: Quad rods for a 80? (8T8T2)

:eek: i'm not at any of my info, who said they don't interchange on the Jets
:confused:

Mar 16, 2004 | 08:13 PM

comp

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From: eville in

Re: Quad rods for a 80? (comp)

What i think there was a change in the hangers, but can't check now :banghead:

Mar 17, 2004 | 08:55 AM

American Boy

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From: Quebec

Re: Quad rods for a 80? (8T8T2)

You're right, the primaries rods don't interchange with the Q-jet that start with 70xxxxxx, newer starts with 170xxxxx. I think you can buy them from http://www.GMpartsdirect.com on the internet or you could do like me and find a scrapyard with 80's two barrel or 4 barrels Q-jet. All those fits great. To be sure, the differance bethween the old style and newer style rod, compare the lenght. The newer are approx. 1/16 of an inch shorter.

P.S. The jets are all the same.

Stephan

[Modified by American Boy, 2:01 PM 3/17/2004]

Mar 17, 2004 | 01:51 PM

American Boy

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From: Quebec

Re: Quad rods for a 80? (8T8T2)

You can look here for part #.
http://forums.corvetteforum.com/zerothread?id=258160

Stephan

Mar 17, 2004 | 02:24 PM

lars

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From: At my Bar drinking and wrenching in Lafayette Colorado

Re: Quad rods for a 80? (8T8T2)

Here are all the part number for all jetting components still available from GM. Any GM dealer can order these. Youcan also get them from GMPartsDirect. Carbs unlimited has all the main jets, but they only sell the pre-'75 primary rods.

Here's the list:

Main Metering Rods, Pre-'75:
7034836
7034838
7034839
7034840
7034842
7034844
7034846
7034848
7034849

Main Metering Rods, Post-'75:
17051342
17051344
17051345
17051346
17051347
17051348
17051352

Secondary Rods:

Code P/N Dia of Tip Tip Length

AH 7033812 0.0530 M
AN 7034320 0.0700 S
AU 7033655 0.0530 L
AX 7033549 0.0400 S
BG 7034822 0.0400 M
CC 7042356 0.0303 M
CH 7045779 0.0570 S
CP 7045842 0.0570 S
CV 7045984 0.0530 L
DA 7046010 0.0443 M
DH 7048992
DP 17053531
DR 17053659

Main Metering Jets:
7031966
7031967
7031968
7031969
7031970
7031971
7031972
7031973
7031974
7031975
7031976
7031977
7031978
7031979

Mar 18, 2004 | 06:51 PM

8T8T2

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Racer

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From: Golden Colo.

Re: Quad rods for a 80? (8T8T2)

Thanks guys for the info. The parts gal at the local GM dealer told me as of May 92 GM has discontinued rods 17051344 and 45. With a little searching they found some 44's at a warehouse across town so I snagged them up.
GMParts Direct had the same story--Discontinued or no part #. So if you run across any hang on to them.
Now I need to get in touch with Lars and see what he recommends for jets.
Thanks again.