New Rv cam timing?
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Senior User
Joined: Nov 2004
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New Rv cam timing?
i just rebuilt my 79 302 before summer, and it is running pretty good, i swapped the original worn cam for a melling Rv cam, and i was wondering if different cams use different timings. The sticker on it says something about it..."
SAE timing
btc - 27
abc - 73
bbc - 75
atc - 34
.050 timing
btc - -6
abc - 30
bbc - 43
atc - -9
On my truck, it says to set the timing at 10 degrees btc...but im getting some pinging, and hoping thats whats causing it...any thoughts would be great..thanks
SAE timing
btc - 27
abc - 73
bbc - 75
atc - 34
.050 timing
btc - -6
abc - 30
bbc - 43
atc - -9
On my truck, it says to set the timing at 10 degrees btc...but im getting some pinging, and hoping thats whats causing it...any thoughts would be great..thanks
Hotshot
Joined: May 2004
Posts: 12,170
Likes: 5
From: The hills of No. Calif.
Try bumping it back to 8 degrees and see if that helps. If it's not enough, go back to 6 degrees. I would think that would be enough.
Do you have a scanner or digital camera? I would like to see this sticker, as well as the cam card that should have come with the cam.
Do you have a scanner or digital camera? I would like to see this sticker, as well as the cam card that should have come with the cam.
Senior User
Joined: Aug 2004
Posts: 173
Likes: 0
Yes. Lots of variables, and I'm no expert either. A lot of modern cams have built in cam advance of say like 4 degress or so. (Comp Cams does this I know) Your particular engine set up with mods will affect how the timing will end up.
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