6.4 cam test at SCDC

[Wild one]

SDPC 6.4 HEMI Camshaft Shootout

We took on the challenge at the SDPC Raceshop dyno, fearlessly testing our camshafts on the formidable 6.4 GEN III HEMI platform. Our mission was clear: to i...

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[04fxdwgi]

Interesting part was when they swapped a 5.7 intake onto the 6.4, with a stage 4 cam. Not much change except the 3k - 4500 midrange band. The torgue dropped off about 25 ft lb's but HP stayed about the same.

So, inversely, the main advantage of a 6.4 intake on a 5.7 is a decent, but modest, boot in the midrange torque.

 

[Wild one]

Interesting part was when they swapped a 5.7 intake onto the 6.4, with a stage 4 cam. Not much change except the 3k - 4500 midrange band. The torgue dropped off about 25 ft lb's but HP stayed about the same.

So, inversely, the main advantage of a 6.4 intake on a 5.7 is a decent, but modest, boot in the midrange torque.

I've seen tests with the 5.7 car intake with a big cam,and above 6700 the car 5.7 intake makes more horsepower then the dual runner 6.4 intake makes,as it's shorter runners start to shine above 6700 rpm. The car 5.7 intake is a single runner intake,it doesn't have the dual runners like the 5.7 truck intake has,and is a straight run,with-out the trucks 90 degree turn under the throttle body