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Jayhawk500 · 01-13-2012, 11:23 PM

Can anyone please tell me the difference between a 1972 factory Holley w/ a List number of 6238 and one w/ 6239?

The 6238 should be for an automatic and the 6239 should be for a 4-speed.
Looking at the carbs on eBay...I can't tell the difference, physically.
Is the internals different? I did buy a 6239, it needs rebuilt and I'm not going for numbers matching. Just the fact that it's a factory carb.

I don't have a Holley book to look them up.

I guess my burning question is," How does the Turbo 350 linkage attach to the factory Holley?"
Pictures would be very helpful.

Thanks for the help.

01-13-2012, 11:23 PM	#1
Jayhawk500 Drives: 2010 Camaro SS/RS Join Date: Apr 2009 Location: Warrenton, Or. Posts: 1,062	Holley Differences Can anyone please tell me the difference between a 1972 factory Holley w/ a List number of 6238 and one w/ 6239? The 6238 should be for an automatic and the 6239 should be for a 4-speed. Looking at the carbs on eBay...I can't tell the difference, physically. Is the internals different? I did buy a 6239, it needs rebuilt and I'm not going for numbers matching. Just the fact that it's a factory carb. I don't have a Holley book to look them up. I guess my burning question is," How does the Turbo 350 linkage attach to the factory Holley?" Pictures would be very helpful. Thanks for the help. __________________ Jayhawk500 2010 2SS/RS, Six speed, Rally Yellow w/ Black Painted Stripes, Boston Acoustic Stereo, Polished 20" wheels, Solo Mach X Catback Exhaust, Solo HF Cats, Halltech CAI, Full Dash & Door ABL, ABL Lit Homelink Buttons, HUD Installed, Ride Tunes, Full Electric Passenger Seat, Fbodfather signed, VIN # 4492, PAID OFF!!! 2010 Yellow 2SS/RS with black painted Stripes...$37,000.00; Ride Tones sound system and remote...$ 40.00; Seeing the kids faces (Young and Old) light up and almost wet their pants....Priceless!!!