also higher compression is good for mileage as well. 10:1 or up to 10.5:1 is possible with good gas and aluminum heads. use coatings everywhere you can. piston skirts, piston domes and combustion chamber faces, use coated bearings also. if you're going to build another 351w comsider doing a long rod version as that will also help get you better mileage as well. check out www.speedomotive.com for their "long arm" windsor. also run as mild of a cam as you can. you should be able to get a hydraulic roller with high lift and low duration and low overlap. if you can i'd try to run fuel injection of some sort, even a TBI system like the holley commander 950 system will yield better fuel economy than a carb. if you need machine work done check out sunset racecraft here in lubbock, they are on Texas ave and about 26th or 27th.
if you want i can help you out some as long as i don't have to do any heavy lifting, since i have a real bad back.
if you want i can help you out some as long as i don't have to do any heavy lifting, since i have a real bad back.
i made a mistake and decide to head up to knotts car show without changing my jets from the last time i went to the races... i ended up getting 12-13 mpg on the freeway with my 347 w/ aluminum heads with 4.11 gears and AOD but i was reving about 2900-3000rpms in O/D the whole way up which didn't help at all
let me know. my last 351w had flat tops a 270 duration 450 lift cam installed 4* advanced and it got about 23 on the highway with a 3.25 gear and 26" tall tires. only problem was it would ping like hell under load because the cam was advanced, i blew it up before i had a chance to set the cam back straight up. no fault of the timing though. i had a buddy do the bottom end because i didn't have time and he didn't torque the rod bolts down correctly. he used the torque values for a 302 with the smaller rod bolts, that and a catastrophic trans failure led to the early demise of that engine. less than 5,000 miles on it too, needless to say i was pissed.
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