Sixpack on a 318 engine ?

toolmanmike said

A 327 2 barrel was rated at 235 horse. Huh! My 273-4 barrel was rated the same. According to the information below, the 318 did pretty good for itself against Chevy's 327.

"The last iteration of the 327 appeared in 1969 with a two-barrel carburetor and a 9-to-1 compression ratio that produced 235 horsepower and 325 foot pounds of torque."

USA specifications	273 V8	318 V8 (LA)	340 V8
Gross horsepower, 1968 (1962 for 318-A)	190 @ 4400	230 @ 4400	275 @ 5000
Torque, lbs.-ft. , 1968	260 @ 2000	340 @ 2400	340 @ 3200
Compression ratio, 1968	9.0 to 1	9.2 to 1	10.5 to 1
Bore, inches	3.63	3.91	4.04
Stroke, inches	3.312	3.312	3.312
Carburetor type (1968-73)	2-bbl.	2-bbl.	4-bbl.
Fuel	Regular	Regular	Premium

Click to expand...

Cam, compression, and intake. 318's, like the 2V 302 and 305 suffered from an emissions cam, low intake valve lift. They also had low compression. Install quench heads with zero deck pistons to get compression and efficient combustion, a cam in the 220°@ 0.050" lift and 0.500 valve lift, and a 4V intake and carburetor to wake them up.