Cam install
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 4,022
Likes: 30
From: Los Angeles CA
yes you can; had to make my own for the stub shaft on my LT engine; I used a stainless washer (they tend to be thinner); had to remove some material by rubbing it across a flat fine toothed file to get it thin enough for the desired clearance...steel or even brass would have worked just as well
Thanks man!
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,062
From: altered state
St. Jude Donor '05
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,....
Being as they all checked out my guess is a crappy cam.
Thier other explanation was suspect, too.
In with the new.
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 4,022
Likes: 30
From: Los Angeles CA
The gear I got from summit Mallory is too long but seems to expose the bottom whatchamacallit.
and they want me to drill the other side, isn't there only one way to do with this... stupid....
and they want me to drill the other side, isn't there only one way to do with this... stupid....
Last edited by slickfx3; Jul 2, 2011 at 12:08 AM.
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 195
From: folsom california
the extra length shouldn't be a problem.
sometimes going to the dealer ...its a PITA...I know, but at least you get what the factory uses (usually).
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 4,022
Likes: 30
From: Los Angeles CA
there is no hole on the other side,
on my Summit invoice, not even on the Mallory packaging
quote:
"the gear is ONLY partially drilled, Installer must finish drilling after correct location on the shaft is determined"
why do they even bother t drill one side does not make sense, maybe they want me to drill it so that I don't have to shim too much
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 195
From: folsom california
it's the old "everything fits almost" syndrome. I can't understand it, the one hole already drilled plus the existing hole in the shaft locates the position of the gear relative to the shaft. At this point I would return the gear and try to find a gear which is actually finished (not partially finished).
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 195
From: folsom california
summit sells the GM Performance steel distributor gear drilled, for 0.491 shaft, part # ACF-10456413' for use with all their cams and crate engines;
would this gear be compatible with the cam you're planning on using ?
would this gear be compatible with the cam you're planning on using ?
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 195
From: folsom california
looked up the specs on Comp Cams 280 xfi cam...gawd..that's a lot of cam with a TON of duration : 0.576" / 0.570" with1.6 rockers; 280 deg / 288 degree.
I have to ask, for as long as the good times lasted :
how was the drivebility ?
what was the engine vacumn and was it sufficient for the power brakes and other vacumn operated equipment ?
and (if you don't want to answer this in a public forum I understand) did it pass California smog, or was this even an issue ?
I have to ask, for as long as the good times lasted :
how was the drivebility ?
what was the engine vacumn and was it sufficient for the power brakes and other vacumn operated equipment ?
and (if you don't want to answer this in a public forum I understand) did it pass California smog, or was this even an issue ?
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Thread Starter
Safety Car
Joined: Oct 2008
Posts: 4,022
Likes: 30
From: Los Angeles CA
looked up the specs on Comp Cams 280 xfi cam...gawd..that's a lot of cam with a TON of duration : 0.576" / 0.570" with1.6 rockers; 280 deg / 288 degree.
I have to ask, for as long as the good times lasted :
how was the drivebility ?
what was the engine vacumn and was it sufficient for the power brakes and other vacumn operated equipment ?
and (if you don't want to answer this in a public forum I understand) did it pass California smog, or was this even an issue ?
I have to ask, for as long as the good times lasted :
how was the drivebility ?
what was the engine vacumn and was it sufficient for the power brakes and other vacumn operated equipment ?
and (if you don't want to answer this in a public forum I understand) did it pass California smog, or was this even an issue ?
driveablitly was good with the low gear 7004 first gear, with the zf6 , between the single mass flywheel's lower than the dual mass inertia, take off would be difficult.
vacuum was on the low side and the brakes would always suck, one of the reasons to go smaller, maybe it's just the c4 corvette brake syndrome, every component was replaced in the braking system.
I have all the cats, it passed smog better than average, my tuning was perfect, in that regard, perhaps that helped...
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 4,022
Likes: 30
From: Los Angeles CA
thanks for the suggestion
