Swapping out a Holley to ?
Hi!
Just wanted to ask what you would do to improve power and economy concerning a carburator equiped Pontiac 389.
Current engine speccs.
Pontiac 389+0,30
Edelbrock RPM kam and intake
Headers
Iron cast heads with 1.92/1.66 that has had some porting work done to em
Compression ratio is around 10.5 to 10.75.
Automatic 200r4 (very soon anyways)
Rear ratio 3.73
Currently I have a Holley 700 DP (4150) and I've been trying to get it economical while I'm crusing on the highway and to work but whatever I do isn't working at all and after some reading I understand that 4150 = not good milage.
I'd like power when I step on it but at the same time I want good milage when I'm not.
Currently it is taking 11,82 miles per gallon witch way to much IMO.
So what would you swap too? (Carburator wise sense a Fuel injection is a bit out of my reach at the moment)
Quadrajet or Edelbrock?
How much would I gain in miles per gallon if I swapped?
Thanks in advance for any help!
//Sven
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