For the past few months, I've kept meticulous records of MPG on various Stude setups, and posted results here. This time is about an Edelbrock and HFI; both on the wife's 63GT; 3.07 gears, and FOM tranny.
Several weeks ago, trying to make the car more drive able for the wife, I installed an electric choked, 600 CFM, Edelbrock 1406, which is familiar to most Stude folks, though most here prefer the 500 CFM, 1403. While some may argue, my experience has been they are nearly identical in terms of performance and MPG.
During the 409 miles it was on the car, the Edelbrock swilled down 29 gallons of gas, for an average of 14.1 MPG.
I replaced the Edelbrock with HFI 616 miles ago, and it has drank 35.9 gallons of gas, for an average of 17.16 MPG, which is about 22% increase.
While the baby Holley on the same car got 16.64 MPG, it is almost unheard of in the Stude world, so not representative of OEM Stude. (It also had a manual choke, which is why I swapped it out.) The Edelbrock is more typical, and gets about the same MPG as Studes in the 60s, running AFBs.
Driving conditions and road speeds were similar in all the above.
Several weeks ago, trying to make the car more drive able for the wife, I installed an electric choked, 600 CFM, Edelbrock 1406, which is familiar to most Stude folks, though most here prefer the 500 CFM, 1403. While some may argue, my experience has been they are nearly identical in terms of performance and MPG.
During the 409 miles it was on the car, the Edelbrock swilled down 29 gallons of gas, for an average of 14.1 MPG.
I replaced the Edelbrock with HFI 616 miles ago, and it has drank 35.9 gallons of gas, for an average of 17.16 MPG, which is about 22% increase.
While the baby Holley on the same car got 16.64 MPG, it is almost unheard of in the Stude world, so not representative of OEM Stude. (It also had a manual choke, which is why I swapped it out.) The Edelbrock is more typical, and gets about the same MPG as Studes in the 60s, running AFBs.
Driving conditions and road speeds were similar in all the above.
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