Originally Posted by MR_P_BODY
I was gonna say just put a 4.00 crank in it to start with.. they are cheap.. that alone will make torque
then if you wanted start thinking heads
wave


Yep, a 390 cube kit run about $1400 to $1900 and come with 4 inch crank, Con rods, 318 0.030 over dished pistons. With a 68cc head you have 9.1:1 Compression ratio.
With a 0.060 over bore its a 396 and 9.2:1

A 4 inch arm in a 318 with mild cam and cleaned up iron heads will move a truck better than a hearty built 318 with big cam and aluminum heads.

Retired, US ARMY 1973-1994
ASE mechanic, Electrical 1994-1997
Retired GTE/VERIZON/FRONTIER 1997-2015


Posting cheap tech help (CRAP) here since Nov 97, 1000's of posts, some may be good.

03 Suzuki Burgman 650(Burger King) Scooter
65 Formula S Cuda
78 Little Red Express Truck
98 Buick Regal (wifes car)