I suggested the 327 because it does make good power, and is unique compared to a 350.
The 327 has a shorter stroke than a 350, 3.25" compared to 3.48", but with the same bore diameter. The slight loss in torque (compared to a tricked 350) is offset by the higher revv potential. Gearing will improve the performance even more.
The 327's rod/stroke ratio means it'll rev higher than a 350. Use good heads like a set of camel-humps, or big-valve power-pacs, to boost the CR to 9.5:1. A 215-230 degree, .450 lift hyd flat-tappet cam, a dual-plane intake and a 650 carb, and headers w/2.25" exhaust will give well over 300 streetable ponies with a redline that approaches 7K RPM.
The cost for this engine will be similar to a earlier style 350 build at a similar power level. (But you get the 327's revvs and unique factor) The motor mounts will the the same or similar to the stock 283.
The motor mounts will likely be different for a '90s model 350. The TBI 350s used in stock caprices and trucks were comparitive slugs in stock form. They made between 160 and 230 HP, and were saddled with primitive fuel injection, pollution controls, restrictive stock manifolds, snake belts and moderate compression ratios. Late 80s, early 90s Chevy V8s aren't much to start out with, cuz they require retrofitting and mods to run w/o the computer.
The 700R4 is a good tranny, but I don't know what it would take to make a 90s model work w/o the computer. You are looking at a X-member swap, linkage change, driveshaft change, etc. The TH-350 3 speed will bolt in place of most powerglides, so its an easier swap.
Good luck
Chip
