Chevrolet 261 Jobmaster





269 cid
4.4 L
4400 cc
9.0:1 cr



1962 block with 848 milled head, .060 cast pistons, 254 duration cam grind.
McGurk intake with matched NOS 1948 Stromberg bxov-2 carbs.
Original fenton headers with heat riser. 17" steelpack mufflers.
Cast aluminum valve & side covers and air filter covers.
261 dual action fuel pump with glass bowl filter.
Spin-on full flow and Frantz bypass oil filters.
K&N Air filters.
Stock bypass thermostat housing.
Pertronix Ignitor, HV coil and solid core wires.
1947 Sun RPM sender & gauge




Frank McGurk's Article about rodding the 261, from May 1955 Hot Rod magazine

I made these graphs to illustrate the dyno tests in the article.

Unloading after machine shop
Assembly
Spin-on oil filter lines (final version - custom made hydraulic hoses and fittings)
Frantz bypass filter and custom made hydraulic hoses and fittings
with polished McGurk Intake	Another unpolished McGurk intake after cleaning
Installed

1948 Chevrolet Fleetmaster Coupe

Chevrolet 235 Thriftmaster

1952 Chevrolet Truck