From stock upgrades to full race engines
JMac Performance can build an engine to meet your performance expectations
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468 Big Block Chevy 290 Profiler heads, Iskenderian hydraulic roller camshaft,
10.5:1 compression , Gen V block
624 horsepower – 590 Lb-Ft torque
347 Stroker Ford Windsor a 302 W Ford small block
Blue printed the bottom end, 210 @ .050 flat tappet camshaft 9:1/1 compression, Edelbrock cylinder heads
389 horsepower – 407 lb-ft torque
383 small block Chevy Airwolf Heads 10.5 /1 compression, Custom Iskenderian roller camshaft, Dr J’s intake manifold, 750 Demon Carb
558 horsepower – 510 lb-ft torque
440 big block Dodge – pocket ported heads, Flat tappet camshaft, Air Gap intake manifold, 850 Demon Carb 475 horsepower – 530 lb-ft torque
Ford 351 Cleveland started with 350 horsepower – 348 lb-ft torque. Blue printing the bottom end, upgrading the cam and intake manifold
456 horsepower and 475 lb-ft torque
Stock bottom end Chevy 350 with 270 horsepower
blue printing the bottom end, upgrading the cam and a pocket porting the heads
finished with 404 horsepower – 429 lb-Ft torque (Only 9/1 compression)
