[SD455DJ]

Well, since my original thread went missing when PY was getting hacked this past summer, I decided to start a new version (V2.0) of it, but without all the history. Long story short, I bought a nice'70 Tempest 2-dr post coupe last December from Florida and immediately set out to tearing the 462/TH400 and interior to 'fix' a few things. I always wanted to build a '70 Tempest post coupe Pure Stocker with the XV code 400 4-bbl with the small valve 10.0 to 1 #16 heads just to see what it could do. The TH400 is freshly rebuilt to HD specs with a Continental 13" convertor and a 3.42 geared 12-bolt rear end. Not the best for the 1/4 mile, but a good compromise gear since I'm going to drive it more on the street.

The new 400 motor is based on a F240 YS block, D160/E200 heads, and a B190 intake with a 7040264 Q-jet and log exhaust manifolds. The heads were rebuilt with new Ferrea 6000/6001 valves, Comp 990 springs, 10 deg retainers and std. valve job (no back cutting the valve head, etc.) and cc'd at 78.0 cc's average (+/- 0.5 cc) after a clean-up cut (80 cc original factory). The block was bored .030" over and the crank cut .010/.010, new RPM 4340 I-beam forged connecting rods and forged Icon 2618 pistons with 2-1/16", 1-3/16" rings (full floating). The mains were machined for .0024" clearance and the rods .0021". The block will be assembled in the near future and we're thinking the actual static compression ratio will be close to 9.75 to 1 with .040" quench. A Summit 2800 cam (204/214/112 at .422"/.444") & lifter kit is planned to replace the 066 factory piece. The exhaust will include the Pypes 2.5" mandrel headpipes for log manifolds (no X-pipe...gasp!) and Dynomax Ultraflows (18" case) and 2.5" tailpipes. We will dyno the motor late October hopefully and should see 350 hp and 450 lbft torque.

More to come! Dennis