Cam Swap Question
#1
Cam Swap Question
I'm gonna throw a LT4 hotcam kit on my car soon and wanted to get ya'lls opinion on wether or not i should rebuild the motor at the same time? I know i've heard alot of stories of people throwing a cam in and then spining a bearing soon after.
#3
Re: Cam Swap Question
Originally Posted by 95WhiteTA
I'm gonna throw a LT4 hotcam kit on my car soon and wanted to get ya'lls opinion on wether or not i should rebuild the motor at the same time? I know i've heard alot of stories of people throwing a cam in and then spining a bearing soon after.
Wa can probably hone it at home just enough to get the shinny spots out,clean it REAL good(wash with clean solvent and blow out several times. Get file to fit ductile iron rings not moly and Clevitte "H" series brgs and a oil pump with the pickup installed and the one with the HV 3/4" pickup like what is on it stock.Get the OP drive with the steel sleeve and a new stock replacement(cloyes) timing set.Get rod bolts and have the shop resize the rods.
The stock rev limit WILL be exceeded. Most of the brg problems are from RPM's and the stock rod bolts stretching and let the brg spin.
Last edited by 1racerdude; 09-23-2005 at 11:54 PM.
#5
Re: Cam Swap Question
Originally Posted by 95WhiteTA
What's wrong with moly rings? I know people running them without probs
I have used them since the '60's and every time I do I wind up reringing it in a short time.
Don't tell me about cyl finish either I have done R&D for C&A on their rings and they didn't hold either.
Last edited by 1racerdude; 09-23-2005 at 11:56 PM.
#7
Re: Cam Swap Question
Originally Posted by Compstall
Spun bearings are usually due to dirty installations or revving the stock engine/bearings beyond their capability. I think you'll be just fine.
I would say bearing failures happen more from neglect to keep the inside of the engine clean while exposed.
75K for these motors is nothing just as long as it has been taken care of w/ religious oil changes.
#8
Re: Cam Swap Question
Originally Posted by SS RRR
Thank you!
I would say bearing failures happen more from neglect to keep the inside of the engine clean while exposed.
75K for these motors is nothing just as long as it has been taken care of w/ religious oil changes.
I would say bearing failures happen more from neglect to keep the inside of the engine clean while exposed.
75K for these motors is nothing just as long as it has been taken care of w/ religious oil changes.
#10
Re: Cam Swap Question
If you have the cash, freshen up the short block now. Then in about a week you'll get tired of the power and want more. Then you'll at least have a fresh motor to swap some ported heads on to.
#11
Re: Cam Swap Question
Originally Posted by 1racerdude
Do you realize how much crap would have to be left in an engine to stop up the OP pickup? Thats BS AND the oil has to go through the filter before it gets to the engine.Sooooo
Bearings, if in good shape from the start which have always received ample lubrication, just don't up and spin all by themselves.
The last cam swap I did I spun a cam bearing. I was a dope and gouged the cam bearing upon install. When I pulled the motor apart for freshening up all other bearings were in flawless condition. The block had 105K miles on it.
#12
Re: Cam Swap Question
i had 85k miles on mine when i had a 383 kit given to me. when my opti went out, i just went ahead and put it in while the accessories were off. costed me a total of about 1200. i love it.
btw. if you can afford a rebuild kit, do it. dont skimp out on the whim that you MIGHT get 300k+ miles on an lt1 like some people running around here. i'm aware that if you take care of an engine it will take care of you, but none the less...rebuild from scratch if you can.
if you have any thought what-so-ever about putting a blower or nitrous in any time relative to the future, get the cam/pistons now. you'll only lose about 30 hp with dished pistons and about 15hp out of a blower/nitrous cam. it's well worth the money now to put it in and save a rebuild in the near future. i wish i had done more research on cams before i got stuck with the CC306 instead of a nitrous cam that i intend to install sooner or later.
btw. if you can afford a rebuild kit, do it. dont skimp out on the whim that you MIGHT get 300k+ miles on an lt1 like some people running around here. i'm aware that if you take care of an engine it will take care of you, but none the less...rebuild from scratch if you can.
if you have any thought what-so-ever about putting a blower or nitrous in any time relative to the future, get the cam/pistons now. you'll only lose about 30 hp with dished pistons and about 15hp out of a blower/nitrous cam. it's well worth the money now to put it in and save a rebuild in the near future. i wish i had done more research on cams before i got stuck with the CC306 instead of a nitrous cam that i intend to install sooner or later.
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