gas mileage help
Thread Starter
|
Senior User
Joined: Apr 2003
Posts: 330
Likes: 0
gas mileage help
ok well i havent got the motor back but i have been thinking about gas mileage. i have talked to some that say they get crappy gas mileage out of their 351m/400 and some that say its decent. well a dad of a friends put a k&n air filter and a tornado on an 89 chevy 1/2 pickup. he said he is getting over 3 more miles to a gallon. i was wondering if anyone has put either or both of these on the 351m/400 engines and if it was worth the money. i have heard that the tornado works for some and not for others is this the case with the 351m/400 motors? i think the k&n air filter always helps it seems. so any feedback on the tornado or k&n airfilter for a 351m/ 400 would be appreciated.
Posting Guru
Joined: Aug 2000
Posts: 1,127
Likes: 3
From: (near) Denver USA
gas mileage help
With a manual transmission, 10 to 12 mpg is normal for 3.5:1 axle gears and 31" tires. As long as you drive sensibly and keep the engine well tuned, you should have no problem.
EPA rating for the 1979 F100 with 351M engine (49-state) was 13 mpg, with either manual or automatic transmission. The CA truck (automatic only) was rated 11 mpg.
EPA rating for the 1979 F100 with 351M engine (49-state) was 13 mpg, with either manual or automatic transmission. The CA truck (automatic only) was rated 11 mpg.
Thread
Thread Starter
Forum
Replies
Last Post
now_what
Performance & General Engine Building
5
Apr 14, 2010 06:31 PM
porky 24
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
10
Jan 25, 2010 05:09 AM
