Do 400s actually exist?
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Elder User
Joined: Apr 2016
Posts: 854
Likes: 7
Do 400s actually exist?
Im looking for a rebuildable 400 core for my 78 f-250. Ive only ever seen 351M motors. Yet everyone on here claims to have a 400.
If anyone knows where to find a post 78 built 400 in the NEPA area, give me a heads up.
Thanks
If anyone knows where to find a post 78 built 400 in the NEPA area, give me a heads up.
Thanks
More Turbo
Joined: Jan 2009
Posts: 547
Likes: 11
I've been wrong before though.
Dennis
Logistics Pro
Joined: Mar 2009
Posts: 4,828
Likes: 592
From: Minnesota
A quick search on Car-part.com resulted in;
1978
Engine Assembly
Ford Bronco Full Size400M REBUILT NEEDS STARTED, RED-RED 9559$935ARichner Auto Parts USA-PA(Milesburg) Request_Quote 814-355-3851 Request_Insurance_Quote
1978
Engine Assembly
Ford Bronco400 / Runs Good C-327$500Route 57 Auto Salvage USA-NJ(Port-Murrary) Request_Quote 908-689-0013 Request_Insurance_Quote
1978
Engine Assembly
Ford Truck F100351M-400? NEEDS CHECKED B12006F$300ARichner Auto Parts USA-PA(Milesburg) Request_Quote 814-355-3851 Request_Insurance_Quote
1977
Engine Assembly
Ford Truck F250400M NEEDS REBIULT UPULL, BLUE-BLUE 65077$125ARichner Auto Parts USA-PA(Milesburg) Request_Quote 814-355-3851 Request_Insurance_Quote
1978
Engine Assembly
Ford BroncoPARTS 120410$CallCosty's Auto Parts USA-PA(Mansfield) Request_Quote 1-800-424-7772 Request_Insurance_Quote
1979
Engine Assembly
Ford Truck F350 $CallSteiner's Auto Sales & Parts, Inc. USA-PA(Lebanon) Request_Quote 1-800-640-3390 Request_Insurance_Quote
1979
Engine Assembly
Ford Truck F350 $CallSteiner's Auto Sales & Parts, Inc. USA-PA(Lebanon) Request_Quote 1-800-640-3390 Request_Insurance_Quote
1978
Engine Assembly
Ford Bronco Full Size400M REBUILT NEEDS STARTED, RED-RED 9559$935ARichner Auto Parts USA-PA(Milesburg) Request_Quote 814-355-3851 Request_Insurance_Quote
1978Engine Assembly
Ford Bronco400 / Runs Good C-327$500Route 57 Auto Salvage USA-NJ(Port-Murrary) Request_Quote 908-689-0013 Request_Insurance_Quote
1978Engine Assembly
Ford Truck F100351M-400? NEEDS CHECKED B12006F$300ARichner Auto Parts USA-PA(Milesburg) Request_Quote 814-355-3851 Request_Insurance_Quote
1977Engine Assembly
Ford Truck F250400M NEEDS REBIULT UPULL, BLUE-BLUE 65077$125ARichner Auto Parts USA-PA(Milesburg) Request_Quote 814-355-3851 Request_Insurance_Quote
1978Engine Assembly
Ford BroncoPARTS 120410$CallCosty's Auto Parts USA-PA(Mansfield) Request_Quote 1-800-424-7772 Request_Insurance_Quote
1979Engine Assembly
Ford Truck F350 $CallSteiner's Auto Sales & Parts, Inc. USA-PA(Lebanon) Request_Quote 1-800-640-3390 Request_Insurance_Quote
1979Engine Assembly
Ford Truck F350 $CallSteiner's Auto Sales & Parts, Inc. USA-PA(Lebanon) Request_Quote 1-800-640-3390 Request_Insurance_Quote
Cargo Master
Joined: Jul 2010
Posts: 2,099
Likes: 8
From: York, Pa
I just sold my 400 on cl for $100. Took forever to even get that for it complete even with a Edelbrock Performer 400 on it. Mine ran ok didn't use oil but still sold it as buy a intake get a motor lol.
I might be getting another 78 F250 parts truck for the d60. I know it has a 400 so if that happens maybe I'll have one for sale.
I might be getting another 78 F250 parts truck for the d60. I know it has a 400 so if that happens maybe I'll have one for sale.
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Mountain Pass
Joined: Sep 2015
Posts: 143
Likes: 0
I had the same issue when I looked to build my 400. Check regularly and check for both 351m and 400 blocks, as they are the same. Pistons and crank being the only differences.
My best advice though, I regret not doing this, find a 460 and build that. They cost nearly the same to build, 460 are everywhere, only a few parts needed to fit into your truck. If you're going for original, obviously this isn't an option. If it's about difficulty, it's not that difficult.
My best advice though, I regret not doing this, find a 460 and build that. They cost nearly the same to build, 460 are everywhere, only a few parts needed to fit into your truck. If you're going for original, obviously this isn't an option. If it's about difficulty, it's not that difficult.
Elder User
Joined: Jun 2005
Posts: 542
Likes: 1
Or are they all 335 blocks?
I got a rebuilt shortblock from a guy once who'd gotten the wrong engine out of the classifieds, bought as a "335 block", thinking it was a bored 330 truck engine.
As far as parts, the crank and balancer are the only 400 things you really need, assuming you're using new pistons, the rods are the same too.
I got a rebuilt shortblock from a guy once who'd gotten the wrong engine out of the classifieds, bought as a "335 block", thinking it was a bored 330 truck engine.
As far as parts, the crank and balancer are the only 400 things you really need, assuming you're using new pistons, the rods are the same too.
Mountain Pass
Joined: Sep 2015
Posts: 143
Likes: 0
Or are they all 335 blocks?
I got a rebuilt shortblock from a guy once who'd gotten the wrong engine out of the classifieds, bought as a "335 block", thinking it was a bored 330 truck engine.
As far as parts, the crank and balancer are the only 400 things you really need, assuming you're using new pistons, the rods are the same too.
I got a rebuilt shortblock from a guy once who'd gotten the wrong engine out of the classifieds, bought as a "335 block", thinking it was a bored 330 truck engine.
As far as parts, the crank and balancer are the only 400 things you really need, assuming you're using new pistons, the rods are the same too.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 783
From: Simi Valley, CA
The 1977/82 351M/400 block is the same, because the block casting number: D7TE-6015-A2B is the same.
The only difference 351M vs. 400 is the crank and pistons, everything else is the same.
351M/400: 1977/79 F100/350; 1978/82 Bronco; 1980/82 E100/350 (400 only); 1980/82 F150/350.
The 351M & 400 harmonic balancers might be the same, might not be...it depends on the applications.
btw: Magnaflux the heads before doing anything with them, as they are very prone to cracking!
The only difference 351M vs. 400 is the crank and pistons, everything else is the same.
351M/400: 1977/79 F100/350; 1978/82 Bronco; 1980/82 E100/350 (400 only); 1980/82 F150/350.
The 351M & 400 harmonic balancers might be the same, might not be...it depends on the applications.
btw: Magnaflux the heads before doing anything with them, as they are very prone to cracking!
Elder User
Joined: Jun 2005
Posts: 542
Likes: 1
351M/400 Performance Build Up Resources Sources
Towards the end, it talks about it a little bit - seems like I remember reading about it somewhere else, and I do know that my two '78 F-250's, one 351M one 400, have different part #'s on them. But NumberDummy is correct, I'm sure, it might just be a fluke that mine were different.
Towards the end, it talks about it a little bit - seems like I remember reading about it somewhere else, and I do know that my two '78 F-250's, one 351M one 400, have different part #'s on them. But NumberDummy is correct, I'm sure, it might just be a fluke that mine were different.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 783
From: Simi Valley, CA
351M/400 Performance Build Up Resources Sources
Towards the end, it talks about it a little bit - seems like I remember reading about it somewhere else, and I do know that my two '78 F-250's, one 351M one 400, have different part
#'s on them. But NumberDummy is correct, I'm sure, it might just be a fluke that mine were different.
Towards the end, it talks about it a little bit - seems like I remember reading about it somewhere else, and I do know that my two '78 F-250's, one 351M one 400, have different part
#'s on them. But NumberDummy is correct, I'm sure, it might just be a fluke that mine were different.And these are block casting numbers, not part numbers. There are no part numbers marked on parts after 1956.
351M/400 car applications:
351M: 1975/79 Ford/Merc Passenger Cars.
400: 1971/79 Ford/Merc Passenger Cars; some 1978 Lincoln/Continental Mark V (some have 460's); all 1979 Lincoln/Continental Mark V