Cam considerations for speed density

A1C calibration can be modified and configured to operate all EFI-SD4x ECUs in 4 cylinder, 6 cylinder and 8 cylinder configurations.
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efloth
Posts: 298
Joined: 2021 Feb 15, 22:12
Location: Sacramento CA
Vehicle Information: 1991 F150 4.9L J1X 80lb Injectors E85
1995 F150 5.8L MOB1

Re: Cam considerations for speed density

Unread post by efloth »

sold the intake and ordered the Edelbrock. Got the cam card and it shows +4 advance is ground into the cam. My timing set has three keyways for straight up, -4 and +4 . Just to clarify I am installing the cam on the +4 keyway and not straight up right? I attached the cam card FYI
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TFS1 Cam Card.jpg
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decipha
Posts: 5031
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: Cam considerations for speed density

Unread post by decipha »

no thats wrong

they already advance it 4 degrees in the profile, its basically for a stock type non adjustable timing gear that only has a straight up mark and you'd have 4 degrees advance

install it straight up
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efloth
Posts: 298
Joined: 2021 Feb 15, 22:12
Location: Sacramento CA
Vehicle Information: 1991 F150 4.9L J1X 80lb Injectors E85
1995 F150 5.8L MOB1

Re: Cam considerations for speed density

Unread post by efloth »

I kind of had a feeling. Thanks for straightening that out. Pun intended.
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