Description
Billet Metering Block Standard Calibration fits most 1850, 3310, 4776, 4777, 4778, 4779 Holley (R) model numbers. Has spark advance provision.
Features:
- Adjustable idle feed restrictions – 0.031″
- Adjustable power valve channel restriction – 0.053″
- 3 pre-drilled emulsion channels
- Non-stick gaskets
- Exclusive QFT positive retaining vent baffle
- Stainless steel idle mixture screws with nylon seals.
- Detailed installation instruction sheet
- Requires QFT 6-32 thread bleeds for modification
- SOLD INDIVIDUALLY
Made in the USA!
