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Author Topic: 428CJ/390GT Cam  (Read 989 times)

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troublemaker427

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428CJ/390GT Cam
« 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. 
« Last Edit: March 13, 2021, 05:45:27 PM by troublemaker427 »
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blykins

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Re: 428CJ/390GT Cam
« Reply #1 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.
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troublemaker427

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Re: 428CJ/390GT Cam
« Reply #2 on: March 13, 2021, 08:28:36 PM »
Great!  Thanks for responding!!
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