Stamp block # 4743

[Morris R.]

Does anyone know what block stamp #4743 mean? Coming off a 66 corvette holley carb 3884505 listing 3367. Thank you

[Michael W.]

Re: Stamp block # 4743

Where on the block is this stamped?

[Page C.]

Re: Stamp block # 4743

The 4743 is the correct number on the primary metering block of a 3367 Holley used on a 1966 Corvette 327/300hp.
Page Campbell

[Frank C.]

Re: Stamp block # 4743

I have posted a picture of the 3367 from my car. The metering block 4743 is what should be on your car if it is a 327 300 hp or 350 hp minus A.I.R. The 327 with A.I.R. option uses a 4920 metering block per the fourth edition judging guide page 68.

Frank3367 Air Horn - Metering Block Picture.jpg

[Timothy B.]

Re: Stamp block # 4743

To add to the posts above, this 4743 metering block houses the main metering jets as well as the idle feed restriction and power valve. These factory calibrations are used for the 300 & 350 hp engines.