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Old 04-13-2004, 09:09 PM
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Whats wrong with this picture?

Okay heres one for you SBC guys, when i was building that little 327 of mine i used a comp cams double roller timing chain. I lined up the upper cam gear too 6 oclock and the crank too 12 oclock but heres where i got lost this was suppose to be my top dead center but when i checked my top dead center was when the cam was at 12 oclock with the crank at 12 oclock and i was 180 off when the cam was at 6. Is this something to be concerned about?? The truck runs great and everything sounds good but i just want to be safe and know if i did something wrong thanks for any help.

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Old 04-13-2004, 09:21 PM
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Arrow

Because the cam only turns half a rotation for the cranks one, you'll have it line up as described. That's normal and the by-product of a 4stroke-cycle engine.
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Old 04-13-2004, 09:33 PM
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12 o clock

my manager at work claims to be so smart, when this subject came up they were trying to figure out why some people put them in both at 12 oclock i let him talk as he was saying he could feel the difference in the amount of power the vehicle had and that most people couldn't feel it. i let him keep talking about all the times hes seen it and why would people do it this way then i was like well doesn't the cam turn half what the crank does and would happen he shut up real quick and yelled at me bout something stupid cause he hates to be shown up.
Jesse
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Old 04-13-2004, 09:34 PM
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When the crank is dead up and the cam is at 6 oclock (as per installation instructions), cyl #6 is on it's power stroke, not #1 like you'd think. Wierd huh?
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Old 04-13-2004, 09:40 PM
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Lots get into trouble if they line up the cam and crank marks and then drop in the distributor thinking its on #1 compression. Its actaully on #1 exhaust and will be pretty hard to start. LOL Been there, did it too!

Mark
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Old 04-13-2004, 09:42 PM
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Quote:
Originally posted by Jmark
Lots get into trouble if they line up the cam and crank marks and then drop in the distributor thinking its on #1 compression. Its actaully on #1 exhaust and will be pretty hard to start. LOL Been there, did it too!

Mark
Yeah it took me a few times to figure that out after being 180 off every time.
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Old 04-14-2004, 01:30 AM
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There's a special place in Hell for the engineer that designed that.
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Old 04-14-2004, 09:08 AM
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Thanks that helps relieve alot of concern I have been a ford guy for some time and acually a big sport compact fan for a bit. I started off back in the day owning a 200 L6 mustang and then moved on too a 455 powered 82 olds cutlass calias that was a transplant from hell But then went into the military as a jet mech for a bit got out and have worked on cars ever since mostly fords and imports. I had a 12 sec 89 ford Probe GT all done up with a T3/TO4E turbo built engine RC injectors etc etc. Then lost that in my divorce and acually built my turbo 89 dodge caravan into a 13 sec screamer. But got tired of always trying to beat the computer and trick it so it would work properly. I missed the old sound of a rumbling V8 so I sold my van and bought a 71 ford torinoGT with 48000 original miles. But the thing had sat out for over 15 years in the weather and the rear quarters were rusted away and the undercarrage was all but gone too so I sold that to a guy who wanted it for the built 351C and C4 trans and 9 in rear for more than I paid for the car. Then saw this old 68 chev and had always liked the looks of them and thought I would love a drag/street truck and here i am .
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