I have a 440 based 511 stroker with a solid roller cam in a 74 Challenger. It has 3.23 gears, 245-60-R15 Goodrich T/A tires, automatiac 727 with TF2 shift kit, and Holley Sniper fuel injection. The Sniper controls timing. I check milage at each fill up. I get between 9 and 11 mpg depending on driving conditions.
The basicaly stock 440 with the Purple Stripe cam (..474 lift) and AVS carb that preceeded this engine got 10 to 12 mpg.
74 Challenger, bought it new. In 1978 I replaced the original 318 with a 446 and 727. Mild cam, Jardine headers, and Holley Sniper EFI.
New engine! 511" RB, Edelbrock Performer RPM heads, Eagle rotating assy, Comp hyd roller cam, Doug's 2" headers.
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