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Old 07-01-2009, 11:12 AM   #1
tevans720
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Join Date: Jun 2009
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Default New Comp Cam need timing help!

We had just bought the Comp Cam 35-308-8 for the 5.0 ho. The motor was all rebuilt and we can't figure out the timing. I'm not a timing guru I really don't know much about it but the basics. Now I be leave a stock 302 would be set at 10* to 12* BTDC. With this cam in and timing marks lined up with each other it wouldn't start till we got it to 20* BTDC and ran like shit we advanced it little by little till it sounded and ran great at 27*BTDC But 27*BTDC seems like something is wrong. Why are we needing to go that far?

Another thing we did is and I don't think this was the right thing to do but we did we left the cam at 27* BTDC and moved the motor back to 10* BTDC. Then we lost a lot of power it seems like it was way faster before hand.

Basically what I'm asking is if anyone has used this cam and how they set theirs up? I would prefer answers with personal experience not with well my friend or it should work doing it this way. Because I have had enough of that from others.

Something just doesn't seem right what am I missing or doing wrong?

Thank for the help ahead of time
Tyler
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Old 07-06-2009, 09:32 AM   #2
sleeperstang
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Location: Lynwood, CA, U.S.A.
Posts: 82
Default Re: New Comp Cam need timing help!

Any chance your you installed your distributor back to the engine shifted 1-gear tooth forward/backward? I can imagine this affecting your timing to where it's that far off. Just a check.
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Old 07-25-2009, 05:43 PM   #3
goodyear1984
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Location: new york
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Default Re: New Comp Cam need timing help!

install the cam straight up at zero.set the base timing at 14. total at 34 or 36 and have it in by 3000rpm.
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347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters
^best et so far 11.6 1.61 60ft coming soon 9sec et's
1992 mustang gt
2001 gmc 1500 4x4
78 century boat
92 skidoo
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Old 07-25-2009, 05:47 PM   #4
goodyear1984
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Location: new york
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Default Re: New Comp Cam need timing help!

to set the dist put the #1 cyl at tdc on the compression stroke set the rotor pointing towards the back of the car then move the dist so the #1 spark plug wire is on top of the rotor that should get ya goin
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347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters
^best et so far 11.6 1.61 60ft coming soon 9sec et's
1992 mustang gt
2001 gmc 1500 4x4
78 century boat
92 skidoo
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