Carb Question
11-05-2016, 07:15 AM
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Carb Question
Hi. I have a ZZ4 crate 385 fast burn motor in my 90.
When I bought the truck it had a 750 Double Pumper Vacuum Secondaries.
The truck bogs, farts, burps and needs a rebuild.
The 385 fastburn recommends or comes wth a 650 from GM
I have the opportunity to swap my carb I have now for a 600cfm double pumper mechanical secondaries for $120.
Fellow said ill loose maybe a 10th on the 1/4 mile. Which I might run it once a year so timeslips are not that important to me. He says fuel mileage will be better.
What are your thoughts?
When I bought the truck it had a 750 Double Pumper Vacuum Secondaries.
The truck bogs, farts, burps and needs a rebuild.
The 385 fastburn recommends or comes wth a 650 from GM
I have the opportunity to swap my carb I have now for a 600cfm double pumper mechanical secondaries for $120.
Fellow said ill loose maybe a 10th on the 1/4 mile. Which I might run it once a year so timeslips are not that important to me. He says fuel mileage will be better.
What are your thoughts?
