69 340 block .030 over for 346"
Low compression cast pistons (~9.5:1 at best with my heads)
stock rods
stock steel crank
hydraulic cam 230/230 @.050 480/480 lift
Stock rockers
Stock pushrods
OOTB 63 cc edelbrocks
Air Gap
750 Holley, HP main body
1" 4 hole spacer
1 5/8-3/4 TTI's
Full exhaust, 3" x pipe, 4 dynomax bullet mufflers and tailpipes to the bumper.
904
Stock gearset
Shift kit
9.5" PTC 4600 flash (~10.5% slip)
8 3/4
30 spline summers brothers axles
3.91 gears
Cone sure grip
235/60/15 ET street radial (26x8)

The car weighs 3500+ pounds as it gets raced. It made 280hp@5800 and 280tq@4800 on a mustang chassis dyno. I usually shift at about 5600. It will pick up a few hundredths if I shift it higher, 6000 ish , but not much.

BEST MPH 108.6 with a tighter converter and a tail wind
BEST ET 12.29 @107.5 with a 1.65 sixty foot

I got the engine and trans used with unknown parts, how many miles or abuse no one knew. I made 25 runs with the stock heads, they were tired and needed help. So I put the Edelbrock heads on it and made 125+ runs. Tore it down, everything checked ok, polished the crank, fresh hone, new rings and bearings. Since then I've put another 4-500 runs on it and countless street miles (abuse), I've driven the car to work every day this week so far, 26 miles round trip into the heart of Seattle and its still kicking. Plenty of power to merge with traffic. The Engine builder keeps harping on my to take it apart again for a check up

FWIW the 904 is untouched from how I got it. Added a cast aluminum deep pan, and the converter was changed to the PTC.

Not the fastest, but it has worked well for me and has proven to be reliable. For a short stroke, low torque, and low budget engine in a heavy car I can't complain.