Cam install
Le Mans Master
Joined: Oct 2004
Posts: 6,314
Likes: 508
From: South-central Missouri
Interesting specs on that cam.
Looking forward to some dyno sheets, as I'm always curious about "power under the curve" results from this vs. that profile. I B a watchin' U!
P.
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 4,022
Likes: 30
From: Los Angeles CA
going down from a Comp 230/236 280 xfi
my Auto-prom was put away months ago, literally now I am on third gen reviewing stuff , so I can re tune for the smaller cam.
it should not be that much of a difference in timing and fueling... I hope, should be fun to tackle.
my Auto-prom was put away months ago, literally now I am on third gen reviewing stuff , so I can re tune for the smaller cam.
it should not be that much of a difference in timing and fueling... I hope, should be fun to tackle.
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 4,022
Likes: 30
From: Los Angeles CA
Okay, so the shop an I need to know if the steering rack had to come out? I think I know the answer, but maybe one of yous know a trick or 2. the damper puller won't fit, any other consideration after we pull the damper? do i have t lift the engine?
another thing is the distributor gear is wearing funny, any idea what is causing this? cam shaft end play?
another thing is the distributor gear is wearing funny, any idea what is causing this? cam shaft end play?
Last edited by slickfx3; Jun 28, 2011 at 03:00 PM.
Le Mans Master
Joined: Oct 2007
Posts: 9,700
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From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
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St. Jude Donor '09-'10-'11
You need to unscrew the PS line that goes into the top of the rack. There is a small loop in the line but it is not big enough to fit the end of the puller.
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Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 196
From: folsom california
excessive play between distributor gear and distributor body; any speed shop can sell you a shim kit.
Is your engine a factory roller? if so, the front of the cam is retained by a retainer plate which eliminated fore and aft movement of the cam.
bad oil pump with excessive internal drag, just plain overloading the gear?
Is your engine a factory roller? if so, the front of the cam is retained by a retainer plate which eliminated fore and aft movement of the cam.
bad oil pump with excessive internal drag, just plain overloading the gear?
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 4,022
Likes: 30
From: Los Angeles CA
yeah they figured out how to pull the damper, thanks Kubs you are right
the cam is stuck half way, hitting the cross member, need to loosen the motor mounts.
some think the dist gear wear is the result of the 280 xfi cam gear being new and the worn 150k mile old distributor accelerating wear, some thinks it's the hardness of the comp cam gear, no consensus.
should I replace with steel?
the shaft in the dist housing is nice and snug no slop there.
the cam roller chain retaining bolt had too thick washers on them and brushed up against the timing cover,we discovered, glad I have it apart.
the cam is stuck half way, hitting the cross member, need to loosen the motor mounts.
some think the dist gear wear is the result of the 280 xfi cam gear being new and the worn 150k mile old distributor accelerating wear, some thinks it's the hardness of the comp cam gear, no consensus.
should I replace with steel?
the shaft in the dist housing is nice and snug no slop there.
the cam roller chain retaining bolt had too thick washers on them and brushed up against the timing cover,we discovered, glad I have it apart.
Last edited by slickfx3; Jun 29, 2011 at 04:55 AM.
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 4,022
Likes: 30
From: Los Angeles CA
Now for the good chit
I decided to have Ron ( cusinartvette) do his magic on my Super ram, so I dropped it off today and he is making great time with it and it looks nasty! check it out!
Le Mans Master
Joined: Oct 2007
Posts: 9,700
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From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
2023 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
St. Jude Donor '09-'10-'11
No problem. when I did mine I only took the bolt out of one motor mount and jacked up the engine a bit. If I remember you only need a little bit more clearance.
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 4,022
Likes: 30
From: Los Angeles CA
excessive play between distributor gear and distributor body; any speed shop can sell you a shim kit.
Is your engine a factory roller? if so, the front of the cam is retained by a retainer plate which eliminated fore and aft movement of the cam.
bad oil pump with excessive internal drag, just plain overloading the gear?
Is your engine a factory roller? if so, the front of the cam is retained by a retainer plate which eliminated fore and aft movement of the cam.
bad oil pump with excessive internal drag, just plain overloading the gear?
That was a new HV mellings that went in 18,000k mikes ago, the oil pressure has been creeping down since new, how do you measure dist shaft play, it was a stock configuration from the factory with one shim
Team Owner
Joined: Sep 2003
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From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
How much time on the cam?
That kind of galling on the cam lobes I'd expect to see from a flat tappet cam.
Were the springs close to binding?
That kind of galling on the cam lobes I'd expect to see from a flat tappet cam.
Were the springs close to binding?
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 4,022
Likes: 30
From: Los Angeles CA
the 8019 springs were an upgrade from AFR and can handle max lift .650, I was at .575.
Comp said valve floatation/tappet bounce can undermine the hard surface, I think it is a bad cam, out of warrantee, but they sold me one at cost,....