I have two 4160s and I'm trying to figure out if one is any better than the other to build. The #'s are 3310-2 man choke, build date of 0996 and a 80508-1 elec choke, build date of 2481. Both appear to be in good shape as far as wear and both have center pivot bowls. This is for a semi-mild 355 dd. Is there any difference between the two as far as performance and who sells a better quality rebuild kit? Thanks for any info.

www.holley.com explore the site. Start by looking in the TECHNICAL section.

The 3310 is a 750, as is the 80508

Thanks, I have tried that, also searching this site and the net, and really haven't found much other than they are 750s and which jets came in them etc.. I just wondered if there was any real difference between the two models because of when they were built, if one would be better performer than the other and who sells a good kit. Thanks for the reply.

You may want to pm 450bench. he is very knowledgeable when it comes to Holley carbs. Good luck.

PM sent.