[drain89]

I’ve finally found a good ‘59 389 block and crank locally that’ll bolt up to the Hydra-Matic in my 55.2 GMC 100. So I’ve resisted the urge to LS swap it so far, but man these old poncho’s are different animals completely.
I’m wanting to rebuild the engine for dependability and torque since it’s in a truck and give it more guts than the original 316. I’m also going to swap out the banjo rearend for an O/P 9.3” I’ve acquired for better choices in gearing.
Other upgrades I will be adding are power brakes and a Holley Sniper or TBI retrofit at the least.
Since I’m starting with just a block and crank, I’m trying to figure out what combo to build.
What heads, cam, and gear ratio would be ideal for a driver that’s a fun to drive with lots of low end power and instant throttle response, BUT still able to pull a utility trailer loaded with building supplies and most importantly, dependable?
The gear ratios in my hydramatic are: 4.08:1, 2.63:1, 1.55:1, and 1.00:1 if that helps. I will be running approximately a 29” tire. Those tranny gears should allow me to have a taller ratio for decent infrequent highway cruising.
In terms of camshaft, I will spring for a hyd roller for durability with focus on low end and midrange power and excellent throttle response. Good vacuum and easy on valve springs. Are a must.
Anybody have a good suggestions or build something similar to this back in the day? All advice is appreciated.