The short answer is NO you cu_nt. 400 uses same belhousing pattern as 460, 429, 400 & 351M
It depends on the engine, transmission,and how you drive. I have a 3 speed manual transmission with a 300 CI 6 cylinder engine. I get about 15-17 MPG.
motorcraft.com shows for the 1977 F-100 with the 300 cubic inch ( 4.9 L ) straight 6 cylinder engine : ( 6 degrees BTDC ) does not specify automatic or manual transmission
For your Ford 4.9 liter / 300 cubic inch inline six cylinder engine : ( the # 1 cylinder is at the FRONT of the vehicle )
12 degrees - Manual Transmission
The Ford 4.9 liter / 300 cubic inch six cylinder engine is an ( inline / straight six )
On a 1995 Ford F-150 : No , the only 6 cylinder engine from the factory was the 300 cubic inch / 4.9 liter inline ( straight ) 6 cylinder
The Ford 4.9 liter is a 300 cubic inch straight 6 cylinder engine
will atrans from a 250-6 ford fit on 300-6 ford
The engine oil dipstick is on the drivers side of the engine , near the rear of the engine , on the 300 cubic inch / 4.9 liter straight 6 cylinder
On your 4.9 liter / 300 cubic inch straight six cylinder engine # 1 cylinder is at the front of the engine nearest the radiator
( .044 inch ) - for the 4.9 L ( 300 cubic inch ) straight 6 cylinder engine in a 1989 Ford truck
( 1996 ) was the last year the Ford F-150 could be had with the 4.9 liter / 300 cubic inch straight six cylinder engine