Need part #'s-71/72,351 GMC,V/6

[100%Chevy]

My 351 runs o.k.but the plugs are so old and rusty that I can't read the A/C part numbers on them.
My local NAPA is out of business and the other stores don't even show a 305 or 351.
So,if anyone has the number for A/C plugs for a 351?
I think it's a 71 or 72 and is out of a big truck.It has pcv system.
Thanks,Mike.

[eseaton]

I dont know off hand but ill look in the book when i get to work tommorow afternoon.

[eseaton]

found some info on classic parts forum
i found some info on that 305e (and the 351e v-6)
compression ratio was 7.75 to 1
compression pressure was 125 p.s.i.
spark plugs ac,c45ns
plug gap is .035"
plug torque is 25 ft. lbs.
point gap is new-.019 old-.016
dwell 31-34 degrees
arm spring tension 19-23 oz.
firing order 1-6-5-4-3-2
timing without a.i.r. 7 1/2 degrees budc
with a.i.r. (mech. trans.) 2 1/2 degrees audc
with a.i.r. (auto. trans.) 7 1/2 degrees budc
valve lash (hot) intake valves 0.012"
exhaust valve 0.018"
engine idle speed (rpm) without a.i.r. 500-550
with a.i.r. mech, trans. 650
with a.i.r. auto trans. 550
bolt torque information (ft-lbs)
cylinder haed bolts 60-65
exhaust manifold bolts 15-20
intake manifold bolts 20-25
water outlet manifold bolts 20-25
rocker arm shaft bracket bolts 20-25
crankshaft hub bolts 180-200

[100%Chevy]

Eseaton,thanks for the information!
Mine is actually a 351-C,but the plugs will still work I'm sure.
The engine is sitting on an engine stand,and I like to run it ever so often.
Again,thanks,especially for the quick response1
Mike.

[eseaton]

100%chevy
Not a prob i have gotten so much help here that all i can do is try to help the next person in line.
eric