Fuel economy (yes I know, who cares?)

[gt6-v8]

Hello again,
I wonder who is the expert on fuel economy with Edelbrock performer (weber 500) 4bbl's on the rover v8's, anyone?

I am getting approx 15 - 18 mpg at the moment, i have just changed the jets since this figure, but will need to advance timing to compensate for uneven cruise.

Can anyone let me know what kid of economy you are getting with a similar setup (if any)

Current setup:
edelbrock 1404 -  500cfm
Primary jet 0.083"
Primary rod 0.067" x 0.055"
Step up spring Orange (5" Hg)
Ignition system Distributorless with Megajolt lite Jnr ignition ECU with Ford EDIS8

Advance curve:
Without vacuum  -

Degrees @rpm
    22@600
    28@700
    28@900
    21@1500
    25@2000
    28@2600
    34@3000
    34@4200
    34@6200
      0@6500


i'm still trying o work out the best vacuum MAP advance on this one.
The fuel economy is still the same as when i was using a rover distributor, so i'm thinking i have something wrong on the carb.

 
many thanks

martin

[MGBV8]

You would get more responses from this generic question on the MG board, as there are way more people over there using this combo.

My MG uses a Buick 215 with a Carter 500 (same as Edelbrock). I get about 25 mpg (US gallons) on the Interstate.

[gt6-v8]

cool, thanks i'll copy it over....

Martin