Good Afternoon
With Carlisle 2023 in the rear view mirror, looking to improve on the drive-ability of the 'Party Barge' ('65 Newport 383).
This year I installed an AFB (3644S) that was rebuilt by Woodruff. While acceleration was better I was disappointed in the overall mileage. the 1000 mile round trip averaged 11.5. Average turnpike speed (both years) of 75 mph.
Last year with the BBD (2BBL) overall mileage was 14.1. Car is filled with 89 octane. I would rate the highway cruising as equal between the 2 and 4 BBL.
Anyway, the issue I would like to remedy is the heat soak. Anyone have thoughts on blocking the cross-over passages under the manifold? I am using the stock well-type choke so I understand that it will take longer to warm up. I am also looking at employing a phenolic type spacer (1/4") under the carb. Hood clearance would not be a problem. The only 'tweaks' I see are longer studs and a lengthening of the choke rod.
Thanks to all who respond.
Omni
With Carlisle 2023 in the rear view mirror, looking to improve on the drive-ability of the 'Party Barge' ('65 Newport 383).
This year I installed an AFB (3644S) that was rebuilt by Woodruff. While acceleration was better I was disappointed in the overall mileage. the 1000 mile round trip averaged 11.5. Average turnpike speed (both years) of 75 mph.
Last year with the BBD (2BBL) overall mileage was 14.1. Car is filled with 89 octane. I would rate the highway cruising as equal between the 2 and 4 BBL.
Anyway, the issue I would like to remedy is the heat soak. Anyone have thoughts on blocking the cross-over passages under the manifold? I am using the stock well-type choke so I understand that it will take longer to warm up. I am also looking at employing a phenolic type spacer (1/4") under the carb. Hood clearance would not be a problem. The only 'tweaks' I see are longer studs and a lengthening of the choke rod.
Thanks to all who respond.
Omni