415 Cubic Inches 650 HP

The stroke is lengthened from 3.66" to 4.125".

The 3.90" cylinder liners are replaced with 4.00" liners from LA Sleeve. Diamond pistons are utilized with Oliver connecting rods.

The engine is fully ported. The ports are sized specifically for the application. Click here for details on the plenum and injector housing porting. Click here for details on cylinder head porting.

The long duration and higher lift camshafts are utilized. The camshafts are timed to the '93 - '95 specifications, E 110 degrees centerline and I 114 degrees centerline. The engine has a choppy idle at 950 rpm.

Headers are installed. Click here for more information on headers. A low backpressure exhaust system is required. The Corsa system works best. The B&B Triflow system with an x-pipe also works well.

An aluminum flywheel is installed. Click here for more information on the light weight flywheel and clutch.

The power increase over the 600 HP engine comes from the camshafts.

This dyno chart is for Dwight Eickmeier's 415 with 646 HP.

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This engine has SGC Stage 3 camshafts with 242 degrees of duration @ .050" lift and .450" total lift. Peak torque is at 4900 rpm. Torque at 3000 rpm is 340.

This dyno chart is for Joe Shown's 415 with 660 HP. Dated 17-Dec-2010.

This engine has Jeal camshafts with 238 degrees of duration @ .050" lift and .430" total lift. Peak torque is at 5000 rpm. Torque at 3000 rpm is 375. The Jeal camshafts have broader ramps on the lobes similar to the OE secondary intake lobe. The broader ramps provide more low lift flow and more average duration.