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Drivetrain => The Nailhead => Topic started by: schlepcar on June 23, 2023, 09:27:12 AM

Title: 401 2X4
Post by: schlepcar on June 23, 2023, 09:27:12 AM
  I know it has been discussed before but I am not sure if the answer is unanimous. Was the 2x4 carbs available as a regular option on the 401 or was it a dealer option? I have heard it both ways and I was also curious as to how it performed vs. the single AFB. Has anyone ran it both ways and compared it as far as driveability or power?  I have been considering going with the setup but not sure I can justify it in my head just yet. The car seems to start and run very well as-is and I did not want to go backwards.
Title: Re: 401 2X4
Post by: dsags on June 23, 2023, 12:07:17 PM
Believe that dual quads was only available as an ‘over the counter’ option. Have not seen anything on order forms that would suggest it was available as a factory option.

Dan
Title: Re: 401 2X4
Post by: cwmcobra on June 23, 2023, 01:29:43 PM
There are a Technical Service Bulletin and Zone Bulletin issued in 1966 for installation and adjustment in the 65-66 Skylark GS. It states that the 2 x 4 induction system was not available from the factory or dealer installed in the Skylark GS.

See attached TSB and Zone Bulletins.

Chuck
Title: Re: 401 2X4
Post by: schlepcar on June 24, 2023, 09:33:55 PM
Some good info there?thanks guys. You always run into the guy who tells you that it came that way or special ordered from so and so. I do not think I have seen any documentation that would suggest that. It just adds that cool factor that looks right in place under the hood.