Moderator: Mod Squad
sam2007 wrote:Need deas for my new motor build a f150 efi 300 six build for the best possible MPG low end mid power. i will start the first idea and would like to know if a zero or better deck and more compression would improve combustion and is this mod in tune with being computer friendly?
StrangeRanger wrote:Probably more to be gained from drivetrain optimization, aero cleanup, low resistance tires, reduced parasitic losses etc. than from engine mods but if I had to pick a list of engine mods:
Cleanup the ports and bowls, cc and polish the chambers, profile the guide bosses and Thermactor bumps but no major porting. 3 angle valve job with back-cut inlets, stock sized valves
High-flow catalytic converter and 2.5" low restriction exhaust
Convert to roller cam and roller rockers. I'd probably have Crower grind a duplicate of their 19211 except contoured for roller followers. Install with a Cloyes adjustable gearset and play with advancing the cam to straight up vs. retarded 4° to see which produced better results.
It would probably improve economy almost as much as going to hard skinny tires and swapping to synthetic lubes in the tranny and diff.
Users browsing this forum: Bing [Bot] and 7 guests