I wanna get a little more hp outta my 300ci I-6 and i was wondering what cams are best for mid-range to top end performance, also what cams are good for bottom end to midrange performance?

 

This reminds me of a fellow I met a few years ago with an E150 that had replaced the 4.9L with a 4.9L engine out of an industrial application. The guy said he loved it had good performance and good mileage, however; a totally different torque range than the 4.9L for a truck application.

No kidding, I listened to the engine as he drove away and it sounded like the one in a big wood chipper.

 

the big problem with the I-6 is the amount of flow in through the heads, if your gonna change the cams maybe consider porting and polishing the heads too.

 

http://www.powerandperformancenews.c...ry_Code=66-CAM

 

Crane has several good grinds, as well as Comp Cams.

For mid to high RPM, the Crane H-272-2, features good power from 2500 up to 5000 RPMS with exhaust and intake/Carb upgrade.

The Crane H-192/2667-2S-12 is a really nice cam, and will really respond to Exhaust and Intake/Carb upgrade.

I ran both of these cams in my 83 F150 4X4. The second was put in a stock motor, and she ran great. I added an Offenhauser intake, and a 2-bbl Holley, and it would still pull stumps, and had very good accerleration.

Pulled that motor at 200K, and put in a rebuilt with the bigger cam, MAC headers, the Offy intake, and a 390 Holley Spreadbore. Wasn't a stock 350 Chevy, or 351 Ford, or a 360 Dodge, that I couldn't outpull, or outrun! And I got great gas mileage too. What a great motor that was. Again, the key is the exhaust and the Intake/carb. No porting or polishing, just a good 3 angle valve job.

 

go to fordsix.com-- look in he 'big six' performance area---more info for his engine than you could possibly EVER shake a stick at.

 

want performance? get a V8