i have a couple of questions

I would not use it.How mutch damage to the block and bolt's could happen with an unsure torque wrench,Alot
And when you got it built how much will you worry about the motor?
Then you take it back out and do it again if you don't brake a bolt off.then tiu would be looking at alot of work to replace it!!!!
You can rent a rench or barrow a good one. :thumbup:

I do not know about the 302's ,Some one will get to you soon.