Not a Mopar but ...AMC 360 on the Dyno
This one was a fun project, haven't done an AMC in about 20years. Customer is a Jeep fanatic and wanted a good build with about 375hp. Customer supplied the cam and intake manifold and the core 360 of course. After doing some research on these and some measurements rotating assembly was decided on stock stroke with a Chev piston for a 377 build. It wound up @ 4.125" x 3.44" with a Chev size 6.250" Rod and the rod journals turned to .020" under SBC size. I was also asked to braze up the weird exhaust ports so they would match his header flange. SBC 2.055"/1.625" valves were used after installing 11/32" iron guides. Chose to use a Ford rocker arm system and had to machine the pedestals down .260" to get all of that .480" cam lift. Picked up flow 22cfm at all relevant lift points to 231-232 cfm @ .400-.500" . Had to machine the DSS forged piston tops in order to use the Felpro head gaskets. I had to figure out how to mount the customers bellhousing to the dyno which took a little head scratching and a few hours of machining. Turned out great though. Broke in the cam and made 12 tests. Surprised me with the torque for 368 cubes and 9.6 comp on 91 pumpfuel. Very pleased with the 14.5" of idle vacuum and the 40-70 psi oil. Sounded good and ran great. Should move his 4spd CJ6 nicely. J.Rob
This one was a fun project, haven't done an AMC in about 20years. Customer is a Jeep fanatic and wanted a good build with about 375hp. Customer supplied the cam and intake manifold and the core 360 of course. After doing some research on these and some measurements rotating assembly was decided on stock stroke with a Chev piston for a 377 build. It wound up @ 4.125" x 3.44" with a Chev size 6.250" Rod and the rod journals turned to .020" under SBC size. I was also asked to braze up the weird exhaust ports so they would match his header flange. SBC 2.055"/1.625" valves were used after installing 11/32" iron guides. Chose to use a Ford rocker arm system and had to machine the pedestals down .260" to get all of that .480" cam lift. Picked up flow 22cfm at all relevant lift points to 231-232 cfm @ .400-.500" . Had to machine the DSS forged piston tops in order to use the Felpro head gaskets. I had to figure out how to mount the customers bellhousing to the dyno which took a little head scratching and a few hours of machining. Turned out great though. Broke in the cam and made 12 tests. Surprised me with the torque for 368 cubes and 9.6 comp on 91 pumpfuel. Very pleased with the 14.5" of idle vacuum and the 40-70 psi oil. Sounded good and ran great. Should move his 4spd CJ6 nicely. J.Rob
