Here is the old engine out of Moby.  I might use it in the z for the first round.  It is a 355 with a 268 high energy competition cam.  2.02/1.60 GM crappy heads, flat top pistons, weiand accelerator intake, 750 holley.

Change of plans:

I will be going with EFI on the V8 now.  I am currently looking for a 4.6L Northstar engine for the conversion.

Old News:  

I have a couple more blocks, so I am thinking I will build another 355 on the side with Trick Flow 23* heads, weiand Team G intake, 750DP, 10.5:1 static compression(8.5:1 DCR), 272TL-6 oval track solid comp cam.  This one should get to about 450hp.  Below are some dyno2000 curves for this engine with a couple different comp cams.  The Isky 280H Megacam looks better than the comp cam 280H because it has 108 LSA versus 110 LSA.  This will sacrifice some idle quality for better mid range and top end performance.  The XE274H cam also looks good because it may help with restrictive exhaust.  It now looks like the Isky cam is the winner.  I will try to run a good exhaust to take full advantage of this cam.  Try to use 1.6 rockers on the intake and 1.5 on the exhaust.

Trick Flow 23 Degree Heads

272TL-6 oval track solid cam

XS282S xtreme energy solid cam

Magnum 280H hydraulic cam

Isky 280H hydraulic Megacam

Xtreme XE274H hydraulic

Following use AFR 190cc Heads

272TL-6 oval track solid cam

XS282S xtreme energy solid cam

Magnum 280H hydraulic cam

Isky 280H hydraulic Megacam

Xtreme XE274H hydraulic

If I can afford to use AFR 190cc heads I might want to.  They improve the horsepower on all three combos.  The peak torque stays pretty much the same but these heads flow better on top and raise all peak horsepower numbers by about 25hp.  AFR claims they produce better torque so they may be interesting to try.