Can anyone give me some information on building a 351C. The block is a 1971 351C boss the only year it was produced. I have the heads and an aftermarket intake, but I need to know what crank I can install without to many problems. Any info would be greatly appreciated. TY
There was really nothing mystical about the 351 Boss motor. Things that separated it from the base 4V 351C were... 4-bolt main caps, high-nodular iron crank, forged rods, mechanical cam and higher compression (although, I believe some other 351C's were offered with the 4-bolt caps).
The weak spot of the 351C is the oiling system, particularly to the rod journals. For starters, the cranks were not cross-drilled so there wasn't a continous flow of oil to the rod bearings. Stock 351C's were known for spinning rod bearings at high-rpm operation. The solution is/was to cross-drill the crank or use 360* grooved main bearings - or limit your rpms.
* I owned a Boss - with a stock bottom end - and would frequently buzz it pass 7,000rpm. Yet, I did spin a rod bearing twice.
There is a great Cleveland forum on Network 54 http://www.network54.com/Hide/Forum/119419 , a lot of racers and engine builders frequent it.There is also an engine build section where people post their combo.
look to the aussies,they used these engines in ALOT of cars.They used these clevos in ALOT of cars,including their own supercar the falcon gtho phase 1,2&3
many crank options from aftermarket and ford motorsport.
U can stroke it or go for high rpm.
Grab a good engine builder in your area or let me know, im a 21 year veteran automotive tech w/ 15 years building racing engines
let me know