Just installed the T1 cam...Is this normal?
Originally Posted by 98SS Blackattack
Larry do you have any articles that say this that we could read??
I installed an 01 LS6 cam in my 98 at one time and had a lot of tapping. I did measure the BC before I installed it. It measured 1.520. As I said my 98 stock BC measured 1.552. At the time from what I read it should have been fine. I got too much lifter noise! If you have an 01 or 02 you will probably be ok but a 98-2000 you will probably get lifter noise from too little preload.
All I'm saying is check the BC and compare it to your stock BC before you install a new cam. If it's smaller chances are you need some adjustment.
You can also check the lobe lifts easily to insure the lift advertised. That is easy to do too.
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From: Raleigh, NC
Originally Posted by jrp
put some miles on the car so the stock tuning can adjust fuel curves and such. since its a 112lsa it'll be pretty lopey and drilling out the TB a bit will help with idle. the normal vavletrain noise will sound like a sewing machine. i'd pull the vavle covers and chekc for a loose rocker or something.
I spoke to MTI about using LS6 springs, they did not reccomend them. Go with the 918s for sure.
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From: Your Reality Check Bounced...
anything over 3000-4000 rpm and ur gonna have a booboo on ur hands man...seriously....get the 918's or dual manleys that MTI sells..the Duals are just for added protection.
Take a look at Comp Cams catalog for pushrod length and rocker arm geometry. Any time you install a cam with a different base circle you need to check push rod length. You should not have valve train noise just because you changed cams. If you have the correct geormetry then noise should be same as your factory cam. And we are talking about the T1 cam in this case. With a smaller base circle you are producing less lifter preload and possible noise. Some super high lift cams might be a real challenge to eliminate all noise but a street cam like the T1 or even the TR224 should not produce noise.
Like I said, the T1 cam has a 1.495 BC and needs .028 shorter pushrods with unmilled stock heads to maintain factory lifter preload. Then again, check your geometry like Comp recommends to be sure before installing any cam.
I have their catalog #106-03, page 306. They probably have this info on their web site. www.compcams.com
Like I said, the T1 cam has a 1.495 BC and needs .028 shorter pushrods with unmilled stock heads to maintain factory lifter preload. Then again, check your geometry like Comp recommends to be sure before installing any cam.
I have their catalog #106-03, page 306. They probably have this info on their web site. www.compcams.com
Last edited by Larry; Jan 14, 2004 at 03:56 PM.
Not sure now often you guys encounter this one 
I pulled the head off my car to replace a f#*king head gasket, but didn't get a chance to fire it up for a couple weeks (had to locate a starter). Once I finally changed the oil and fired it off last night, it sounded more like a bunch of little gnomes tapping around with little hammers than a motor running 
I left the car to idle (70+ psi oil pressure) until it warmed up (60+ psi oil pressure, 190 deg water temp) but the noise still didn't go away. Not until I drove the car and got it above 3000 RPM did the lifters decide it was time to pump up and quiet all the racket. It only took maybe 50 feet to quiet down. Today, it's quiet as can be (for a 238/240 .605/.609 112 cammed car) 
I pulled the head off my car to replace a f#*king head gasket, but didn't get a chance to fire it up for a couple weeks (had to locate a starter). Once I finally changed the oil and fired it off last night, it sounded more like a bunch of little gnomes tapping around with little hammers than a motor running I left the car to idle (70+ psi oil pressure) until it warmed up (60+ psi oil pressure, 190 deg water temp) but the noise still didn't go away. Not until I drove the car and got it above 3000 RPM did the lifters decide it was time to pump up and quiet all the racket. It only took maybe 50 feet to quiet down. Today, it's quiet as can be (for a 238/240 .605/.609 112 cammed car) TECH Fanatic
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From: Your Reality Check Bounced...
Originally Posted by Brains
Not sure now often you guys encounter this one I pulled the head off my car to replace a f#*king head gasket, but didn't get a chance to fire it up for a couple weeks (had to locate a starter). Once I finally changed the oil and fired it off last night, it sounded more like a bunch of little gnomes tapping around with little hammers than a motor running I left the car to idle (70+ psi oil pressure) until it warmed up (60+ psi oil pressure, 190 deg water temp) but the noise still didn't go away. Not until I drove the car and got it above 3000 RPM did the lifters decide it was time to pump up and quiet all the racket. It only took maybe 50 feet to quiet down. Today, it's quiet as can be (for a 238/240 .605/.609 112 cammed car)
I pulled the head off my car to replace a f#*king head gasket, but didn't get a chance to fire it up for a couple weeks (had to locate a starter). Once I finally changed the oil and fired it off last night, it sounded more like a bunch of little gnomes tapping around with little hammers than a motor running I left the car to idle (70+ psi oil pressure) until it warmed up (60+ psi oil pressure, 190 deg water temp) but the noise still didn't go away. Not until I drove the car and got it above 3000 RPM did the lifters decide it was time to pump up and quiet all the racket. It only took maybe 50 feet to quiet down. Today, it's quiet as can be (for a 238/240 .605/.609 112 cammed car) 
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From: Houston,TX
Originally Posted by Insomniak
my friend has a T1 cam.. i believe he had to get MTI to drill the throttle body and dyno tune it for it to idle right.
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From: Bay Area/ UCI-VDC norte
Well i have the same cam execpt with 114 LSA (B1 cam) My question is will i need pushrods? And if so which ones, I already got 918's.... i think i should be fine without tuning seeing as it is an M6. Lemma kno what u think
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From: Your Reality Check Bounced...
Originally Posted by greekss
Well i have the same cam execpt with 114 LSA (B1 cam) My question is will i need pushrods? And if so which ones, I already got 918's.... i think i should be fine without tuning seeing as it is an M6. Lemma kno what u think
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From: McKinney
I installed my T1 not too long ago without issues. I have a 98, stock heads and it doesn't make unusual noise. Also, It ran fine without a tune for a few days till it got the LS1edit treatment. Now, if I could get my cats taken off the Y pipe with a better catback,LS6 intake, I think it will be alot better HP wise. Love the torque on this baby though! Oh, I almost forgot, Comp 918's here.
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From: Schiller Park, ILL Member: #317
Originally Posted by greekss
Well i have the same cam execpt with 114 LSA (B1 cam) My question is will i need pushrods? And if so which ones, I already got 918's.... i think i should be fine without tuning seeing as it is an M6. Lemma kno what u think
I am using hardened stock-lenght push rods and 918s with 772 retainers.
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From: Chicago, IL
Originally Posted by RPM WS6
You should be fine with stock lenght push rods and a B1. I have a B1 that I've been using with stock length P-rods for about 2 years now, it's basically quiet as a mouse, barely any more valvetrain noise than stock, and definitaly no 'ticking/tapping'....
I am using hardened stock-lenght push rods and 918s with 772 retainers.
I am using hardened stock-lenght push rods and 918s with 772 retainers.
Because you have a smaller base circle than stock does not necessarily mean you will get valve train noise. Depends on how small a base circle and how much preload is left on the lifters.
My car is a 98 which I understand has a larger BC than do the newer engines. My BC is 1.552 diameter. I tried an 01 LS6 cam in mine with a 1.520 BC and got more noise than my factory cam. It was fine and I ran it quite awhile without problems but I did notice a little more noise than my factory cam. I am now running a Comp 218/218 with a 1.540 BC and get zero noise.
I purchased a Thunder TR224/224 with a 1.475 diameter BC. I called Thunder and talked to David. He said it was fine to run. He did not ask what year my Camaro was so I'm afraid he may have been basing his assumption on the BCs of the newer engines. If I install this cam I'll be running .039 less preload than originally designed by the factory. Whether it will work or not I don't know. I'm not going to find out either unless I decide to buy longer pushrods.
My car is a 98 which I understand has a larger BC than do the newer engines. My BC is 1.552 diameter. I tried an 01 LS6 cam in mine with a 1.520 BC and got more noise than my factory cam. It was fine and I ran it quite awhile without problems but I did notice a little more noise than my factory cam. I am now running a Comp 218/218 with a 1.540 BC and get zero noise.
I purchased a Thunder TR224/224 with a 1.475 diameter BC. I called Thunder and talked to David. He said it was fine to run. He did not ask what year my Camaro was so I'm afraid he may have been basing his assumption on the BCs of the newer engines. If I install this cam I'll be running .039 less preload than originally designed by the factory. Whether it will work or not I don't know. I'm not going to find out either unless I decide to buy longer pushrods.
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From: Schiller Park, ILL Member: #317
Originally Posted by Jake99SS
Didn't they change to a different vendor like Crane or Comp some time ago? Maybe those have a different base circle...