351C identified?

"HELP"...Needto know if Thermostat in block and 8-bolt valve covers insures its a 351C??..If not what does??... Second question...will a two (2) row Aluminum radiator solve the over heating problem??..Again,..if not wahat will... Your help is greatly appreciated...Regards to all....Tony Scardaville

 

351M and 400 have the same valvecovers and thermostat location. They have a big block bell housing pattern though. The 351C has a small block pattern.

On a 351C the intake surface is level with the distributor/thermostat mounting surface. On the others the intake and thermostat surface is higher (taller deck height).

Added some pictures, notice how the 400 is taller around the distributor hole.

 

Also there is a restrictor in the thermostat housing which gets lost and maybe the problem with over heating. Mine runs cool with a regular rad.

 

This is why I love this site. Learn something new everyday.

 

Right on dead giveaway is the valve covers and extended block around timing chain. Therm housing in block. ( if trying to determine between Windsor and Cleveland. ) and that tall bell housing on 351 m 400. Great engine. I had a sweet one many years ago

 

351c has bigger heads easy to spot as said thermo is right to the block

 

Some '73 400s had the SBF bell pattern. If all else fails, what casting #s?

 

the fuel pump bolts are vertical on the 351 cleveland and horizontal on the 351 winsor. Old Wolf

 

make sure you are runinng the proper diameter pulley on the water pump...if it's even 1" smaller it will tend to warm up while driving above 50mph

 

A lot easier to just remember the C intake is dry & the W isn't.