Marketed by GM as 855 cfm
Rebuilt a while ago, clean, really nice condition.
Not used since.
No choke plate/shaft attached to Air Horn.
Dated 703 (Oct. 1967)
Front Metering Block #5247 (ZL1)
Rear " " #5253 (ZL1)
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Great performance upgrade to a factory 780cfm for an old school ride, while maintaining stock looking appearance.
This is the way the performance guys upgraded warmed over 427++ bigblocks back in the day, before Double Pumpers became available.
855+ CFM, choke flap & shaft removed, ZL1 metering blocks*
( *to help supply fuel for their .600/.600 lift ZL1 camshafts).
** Pictures Available, just PM me & provide your email for them**
$299 + Shipping in Lower 48 States.
Buyer to pay net PP fees, and the net addl. cost for shipping to Hawaii, Alaska, or Canada
Alot of spotless references available on multiple sites.
Thank you all for your interest. [/B]