Best 273 and 318 builds (NO 360's please)

This is the street motor I built for the Demon. Like a couple of others here, the 318 is an interim engine until it either blows up or the budget makes a Gen III hemi feasible.

Here's the specs:

Block, rotating and reciprocating parts come from a 1968 Dodge Coronet. Front cover and cylinder heads are from a 1988 Dodge truck, damper and pulleys are from a ’75 Plymouth.

Cast pistons replaced with hyperutetic of identical measurements ('68 spec, flat top, 4 valve reliefs).

Compression ratio 9.3:1 (as measured)
Bore 3.91 inches
Stroke 3.31 inches

Double roller timing chain

Camshaft produced by Crane Cams

Crane hydraulic lifters, stock pushrods and rocker arms

Cam Timing: Intake: .441 lift 218º duration @ .050”
Exhaust: .441 lift 228º duration @ .050”

Cylinder heads have been replaced with casting # 4323302.
This head features a “closed” combustion chamber with 62.6 cc volume
Valve Diameter: 1.78 inch (intake)
1.50 inch (exhaust)
Heads have hardened valve seats.
Engine Intake:
Manifold: Edelbrock Performer #2176
Carburetor: Carter AFB rated @ 625 cfm. Manual choke.
Air Cleaner: K&N #1110


Tuning:

Spark plug: N13Y Champion or equivalent
Plug gap: .035 inches
Timing: 2½º BTDC
Point gap: N/A electronic distributor
Dwell angle N/A electronic distributor
Idle: 750 rpm hot idle