jeffhh (Login jeffhh) Members from IP address 68.12.247.179
has anyone out there ever tried this swap since the 400 only came in full-frame cars, not unibody. The mounts are different than small block and 351c which interchange. Im planning a fmx trans with the big block style bellhousing. This motor is overlooked and plenty of potential for lots of torque and 2 not too heavy.
Knew a guy long ago who put a worked-on 400 in a '67 or '68 notchback Stang. Believe he used 429-460 mounts. Kind of nose heavy, compared to the SBF, but it had prodigious grunt. Some of the Chivvie guys might edge him in a full quarter, but none of them tried him from a roll more than once. The torque graph was as flat as Kansas, and way up there from idle till it ran out of air.
"If you're under control, you're not going fast enough." ---Parnelli Jones on Trans Am racing.
429 460 mounts will not fit a 351m 400. those engines have there own mount setup. the 429 460 are like an fe engine. you will have to make a set of mounts. you come modify a set from a 72 torino.
A 400 with the price motorsport intake adapters to use a 351C 4V intake and a set of 4V heads could be a nasty combo.....plenty of cubes for the 4V ports.
found 3 different styles of mounts avalible for the 351m-400 if anyone is interested, One for the 72-76 torinos, elites, 77-79 tbirds,77-79 ltdII. this mount bolts directly to the frame crossmember. the other is for the 71-78 full size ltd.this bolts to a stand that bolts the crossmember. This would be the mount Id start with. I figure all you need to have done is cut off the ears and have new ones fabed on with horizontal bolt distance changed 2 inches further apart. see pics in last post. the ltd mount is shorter from bolt hole left to the one on the right than the torino style which adds another 4 inches to the distance, as far as my fairlane is right in the middle of these 2 styles. another easy possibility is the truck style without the ears but a single bolt that protrudes from the center of the mount.You could fabricate custom stands(between the mount and the frame of the car. for any of the above mounts. I would not think this would be too difficult. fyi the distance from the rear of the block to the mount area is identical to the 302-351w or c. so front to rear positioning should present no problem. also I saw a 68 cougar with a 400 installed and no cutting was involved.
