I ordered a reduced base circle spec camshaft, in order to run the factory hydraulic roller lifters within this 393 I'm building.

While assembling the short block this morning, viola.

Cam Motion Custom Cam IS NOT a reduced base circle. I wish they were open on Saturdays.

I assume this core ID will cross to a factory 5.0 grind; if it's the same it's incorrect. (Since I needed a reduced base circle core.)

Disappointing.

Here are the complete specs for those whom may have been interested:


393 CID
Custom Grind: X2251-2182-15+3
Core: 312642


Lobe seperation= 114.9 cam deg
Valve overlap= -2.3 crank deg

Intake
Valve Open= 3.5 BTDC
Centerline= 111.9 ATDC
Valve Close= 47.5 ABDC
Duration= 231 Crank Deg
Lobe Lift= .34591 IN.
Valve Lift= .55345 IN.
Lobe Area= 27.94 IN. Deg

Exhaust
Valve Open= 50.8 BBDC
Centerline= 117.9 BTDC
Valve Close= -5.8 ATDC
Duration= 225 Crank Deg
Lobe Lift= .33894 IN.
Valve Lift= .5423 IN.
Lobe Area= 26.68 IN. Deg

 

This is the 1st , not positve thing i have heard about them, i'm assuming the duration you listed is @ .050"? or your puttin the engine in a tow truck or taxi

 

Turbo Taxi!!!!

That will get you thru NYC

 

After a quick phone call this morning, it was just as I suspected; a standard core that was ground as a result of a "minor" paperwork error, not a big deal really, Cam-Motion will have the new cam sent out tomorrow. Carolyn was very accomadating, and courteous.


Identical grind w/ reduced base circle for 351W Retro-Fit.

 

I just got a cam spec'd by them and was blown away at how small it is.

220/214 .526/.523 115 LSA

For a 377 with a T-76 (street/strip)

But hey, they know what they're doing better than I do. I even called to confirm that they had spec'd out a cam for MY car and not somebody elses.