FE Power Forums

FE Power Forums => FE Technical Forum => Topic started by: troublemaker427 on March 13, 2021, 05:01:18 PM

Title: 428CJ/390GT Cam
Post by: troublemaker427 on March 13, 2021, 05:01:18 PM

I'm putting together a low buck 390 to put in my '66 F-100.  I'm using a factory 390GT/428CJ cam that we had on hand.  Do these cams work best installed straight up or advanced/retarded?  It is a 390 with cleaned up CJ heads and a Performer RPM intake. 

Title: Re: 428CJ/390GT Cam
Post by: blykins on March 13, 2021, 06:33:23 PM

I would advance it. 

The ones I've seen on a cam doctor were like 115LSA, straight up, which means the ICL is also around 115.  I'd advance the poop out of it if your compression ratio and everything checks out.

Title: Re: 428CJ/390GT Cam
Post by: troublemaker427 on March 13, 2021, 08:28:36 PM

Great!  Thanks for responding!!