(Last Revised 5 May 2007)
Engine Information - 400 (Second
V8 into this Z - in progress)
-
Dart Sportsman iron block, 350 mains, 4.125" bore, bored .030" over (4.155"
bore), zero decked
-
Scat 9000 383, (6.0" rod) crank
(PN 9-350-3750-6000), 3.750" Stroke x 6.000" x 2.100" Rod - Lightweight
- Internal Balance, with 350-to-400 bearing spacers
-
Probe Industries 15cc dished forged pistons
(PN 1302-12341-030). Hastings 0.035" oversize rings custom gapped
to 0.014".
-
5140 I beam 6" connecting rods, ARP bolts
-
ARP main studs, head studs
-
Canfield 215cc intake port, 65cc chamber Aluminum 23 degree heads
(PN 23-550), 2.08/1.60 valves, Bowl ported (exhaust only)
- Comp Cams Pro Magnum 7/16" 1.52:1 ratio steel roller rockers. 7/16" screw in studs and guide plates. 0.040" Felpro 1014 head gaskets
(Click here for quoted, out-of-box, and ported (exhaust) flow data)
-
This combination gives about 10.5:1 compression ratio.
-
Cam Motion PN 2442-2501-12-4 Solid Roller "Low Lash" Camshaft :
274/280 Advertised Duration, .577"/.570" lift (1.5:1), 244/251 @ 0.050" tappet lift,
112 degrees lobe separation, Isky Redzone lifters with pressurized roller oiling, Cloyes True Roller timing set,
Scoggin-Dickey / Bo Laws 3 piece timing cover (PN SD60004)
-
Edelbrock Victor
Jr. PN 2975, single plane intake manifold
-
Holley 830 cfm HP series carb, annular boosters, PN 0-80511
-
Recurved HEI distributor, HEI BruteThunder Coil, MSD Soft Touch Rev Limiter,
MSD 8.5mm Super Conductor Plug Wires, Accel 734 plugs.
-
JTR/Sanderson Block Hugger Headers, D-Port, Angle Plug. Ceramic coated exhaust
system )
(May go to full length tuned headers, 1-3/4" or 1-7/8" primary, 3" collector)
-
Melling High Pressure SB pump, Canton Road Race oil pan and pickup,
System 1 one quart filter.
-
Based on the above data (assuming the long tube headers and mufflers), Desktop Dyno 2000 gives the following estimate:
535 lbft @ 4500 rpm
525 hp @ 5700 rpm.
If I get 85% of that, I'll be more than satisfied!

The 400 shortblock was provided by Dave Williams at Maximum Overdrive
Racing Engines. Rebuilt in 2007 with Dart Sportsman Block
Engine Information - 327 (First
V8 into this Z)
-
1962 327 block and forged steel crank. (All small journal 327s (62-67)
had forged cranks.) Crank bore align honed and cylinders bored 0.030"
over. Std/Std crank with H series Clevite bearings.
-
TRW forged flat top pistons. Speed Pro 0.035" oversize rings custom
gapped to 0.016". Stock rods Mag'd, resized w/ SPS bolts. All
deck heights within 0.002" of 0.015" below deck by machining block deck
and some piston heads. (I got pretty particular there.)
0.019" steel shim head gaskets. Manley head bolts.
-
1964 "461" casting "double hump" or "Fuelie" heads. Cc'd at 66 cc's.
2.02"/1.60" valves, 3 angle valve job, Isky dual valve springs.
Port matched, bowl ported. Isky heavy duty valve springs, retainers.
Comp Cams hardened pushrods and Pro Magnum 7/16" 1.5 ratio steel roller
rockers. 7/16" screw in studs and guide plates.
-
This combination gives about 9.7:1 compression ratio.
-
Comp Cams (XS274S-10,
pn 12-677-4) 274/280 deg. adv. duration (236/242 deg @ 0.050") 0.510/0.501"
lift, 110 deg. LSA, Extreme Solid Flat Tappet Cam (my age is showing :).
Edelbrock 2 piece timing cover for easier cam tuning/changing.
-
Holley "Contender" (pn 300-36) hi-rise dual plane intake manifold, port
matched. (Much like the original LT-1 intake.) Holley "contends"
that it's good from idle to 7200 rpm. That's pretty broad.
I also have a Victor Jr. I may try.
-
Holley 650 Double Pumper 4bbl carb (List 4777).
-
Recurved HEI distributor with Crossfire Cap, HEI BruteThunder Coil, MSD
Soft Touch Rev Limiter, MSD 8.5mm Super Conductor Plug Wires, Accel 734
plugs.
-
Hooker Block Hugger Headers. I was thinking about header wrap, but
decided to go with metallic ceramic coating to keep the heat down in the
engine compartment, and next to the brake lines and wiring. I've
subsequently had them Stainless Steel/Ceramic coated (along with most of
the entire exhaust
system ) by Baxter Custom Engineering
.
-
Melling High Pressure SB pump, Corvette shallow 6 qt pan and pickup, Milodon
Diamond Stripper windage tray, System 1 one quart filter.
-
Based on Desktop Dyno 2000, with ported 461 head flow numbers, etc., the
estimate is 390lbft@4500rpm, 370hp@5500rpm.
I had the machine work done, but did all the blueprinting and assembly
myself. I got a boneyard 327 for $100. Added all new stuff
except the block, crank, head castings and valves.
(click on pic for larger version)
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