What type engine?
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Senior User
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From: Tuscaloosa USA
What type engine?
I know this has been asked a million times before but I need to figure this out. I got my donor truck yesterday, a week later than expected but got to tinker with it a bit today. I'm not sure if it is the original to the truck and I got three different opinions on what kind of engine it is. I was told it was a 390 (of course), a 400, and a 460. The engine is stock Ford, with a 2 barrel carb. It also has factory air and the truck is a 78 F150. What can I look for to tell what it is or at least get close?
Thanks!
Shane
Thanks!
Shane
Cargo Master
Joined: Sep 2007
Posts: 2,095
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From: Wahpeton ND
Most likely a 400M as it has a 2bbl carb. I belive all the 460s had 4bbls but I aint 100% on that. Last year of the 390 is 76 so it aint an FE unless it was installed.
If it is a 4WD they did not offer the 460 in 4WDs in the 70s.
If it is original it is most likely a 400 though the 351M is externaly identical.
If it is a 4WD they did not offer the 460 in 4WDs in the 70s.
If it is original it is most likely a 400 though the 351M is externaly identical.
Post Fiend
Joined: Nov 2000
Posts: 6,060
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From: Glendale Arizona
There can be a possibility of three V8 engines if it is stock. Post the VIN.
302
351M400
460
The 302 is small and compact with a bolt on front aluminum cover for the timing chain. It uses the small bell pattern shared with the 300 six.
The 351M400 is a bit larger and has a integral area for the timing chain, The heads have rectangular indents on the top of the exhaust ports and will have the i block bell housing.
the 460 is much larger and has a seven bolt valve cover. I shares the bell housing with the 351M400.
Garbz
302
351M400
460
The 302 is small and compact with a bolt on front aluminum cover for the timing chain. It uses the small bell pattern shared with the 300 six.
The 351M400 is a bit larger and has a integral area for the timing chain, The heads have rectangular indents on the top of the exhaust ports and will have the i block bell housing.
the 460 is much larger and has a seven bolt valve cover. I shares the bell housing with the 351M400.
Garbz
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From: Tuscaloosa USA
No way its a 302, way too big for that. I can pick those out easily with my Mustang experience...
What does the I block bell housing look like? I'm not sure how to differentiate it. I'll look at the heads tomorrow and see what it tells. From a glance, it looks identical to the 460 that is in my other 78 but I havent put them side by side to check however my 460 has alot of mods (edelbrock high rise alum intake, holley 750, etc) but if 460s didnt come with a 2bbl then it cant be that because it has the original intake and carb.
Shane
What does the I block bell housing look like? I'm not sure how to differentiate it. I'll look at the heads tomorrow and see what it tells. From a glance, it looks identical to the 460 that is in my other 78 but I havent put them side by side to check however my 460 has alot of mods (edelbrock high rise alum intake, holley 750, etc) but if 460s didnt come with a 2bbl then it cant be that because it has the original intake and carb.
Shane
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Joined: Jul 2010
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From: N.B Canada
No way its a 302, way too big for that. I can pick those out easily with my Mustang experience...
What does the I block bell housing look like? I'm not sure how to differentiate it. I'll look at the heads tomorrow and see what it tells. From a glance, it looks identical to the 460 that is in my other 78 but I havent put them side by side to check however my 460 has alot of mods (edelbrock high rise alum intake, holley 750, etc) but if 460s didnt come with a 2bbl then it cant be that because it has the original intake and carb.
Shane
What does the I block bell housing look like? I'm not sure how to differentiate it. I'll look at the heads tomorrow and see what it tells. From a glance, it looks identical to the 460 that is in my other 78 but I havent put them side by side to check however my 460 has alot of mods (edelbrock high rise alum intake, holley 750, etc) but if 460s didnt come with a 2bbl then it cant be that because it has the original intake and carb.
Shane
The I block bell housing would look like the one in your 78. It has a 460 in it right? maybe taking a look would be your easiest bet.
japedo
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From: Tuscaloosa USA
It's amazing what a little closer look will do. I'm not sure what those two guys that said 390 and 460 were smoking...SINCE THE FACTORY STICKER IS STILL ON THE VALVE COVER! When I was looking at the engine, both times i was on the passenger side. Today I ran by the house at lunch to check for the things you guys mentioned and saw this:
So yeah, that about sums it up.
Here's the VIN too, if anyone wants to decode (hint hint ND).
So yeah, that about sums it up.
Here's the VIN too, if anyone wants to decode (hint hint ND).
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