What's the difference. CAMSHAFT

[stuartlittle]

The machinist I took my engine to to have him bore and machine the block. Spec the cam journals and crankshaft to see if they were still good etc. Turned out he "never got my cam from me" That was kind of hard because the short block was together when he got it. So I now need a new cam. I have found a couple new for sale but they are not for the balance shaft engine that I have. What is the difference between a non balance camshaft and a balance camshaft? Anyone know? I'm thinking it's only the guide pin is longer on the balance engines.

 

[blk00z28]

Re: What's the difference. CAMSHAFT

I would be at the shop asking why the motor came assembled, but now is missing the cam. :roll:

 

[2fast4u]

Re: What's the difference. CAMSHAFT

I would be at the shop asking why the motor came assembled, but now is missing the cam. :roll:

No doubt.. That wacky tobacky will do some weird things to people. :roll:

 

[SY2455]

Re: What's the difference. CAMSHAFT

I would pick up what left of my engine and run the other way.

 

[supersports10]

Re: What's the difference. CAMSHAFT

hmmm i was the first one to post, now it's gone.....interesting......

anyways...the balance shaft cam's have a snout added to accomadate the balance shaft gear.

enjoy!!:myclone:

http://www.syty.net/forums/showthread.php?t=20725

CAMS, LIFTERS, TIMING GEARS
Several cams have been used in the 262. There are important differences in both the specifications and the base circle diameter.

1985-’86: The same flat tappet cam was used in ’85 and ’86.

1987- ’91 VIN "Z": The original roller cam used for the throttle body motor was a 10088148 or a 14093686. It had a 1.380" intake base circle, a 1.335˝ exhaust base circle, and a pretty mild grind.

1990-’91 VIN "B": The H.O. motor had a much hotter cam that should not be interchanged with any other application. It’s a p/n 10055487.

1992-’94 VIN "Z" WITHOUT BALANCE SHAFT: The specs for this cam were comparable to the earlier VIN "Z" cams, but the base circle on both the intake and exhaust was reduced to 1.260˝. The OEM part numbers are 10144176, 10214713 and 10172776.

1993-’95 VIN "Z" WITH BALANCE SHAFT: The specs on this cam were similar to the ones used in the VIN "Z" without a balance shaft, but a snout was added for the balancer drive gear. It’s a p/n 10144065.

1992-’95 VIN "W" WITH BALANCE SHAFT: The premium high output engine came with central fuel injection, a balance shaft and a better cam starting in ’92. The original cam, p/n 10144047, was used from ’92 to ’94. It was replaced by p/n 10241693 in ’95. They are comparable grinds so most rebuilders are interchanging them.

1996-’98 VIN "X" WITH BALANCE SHAFT: The VIN "X" engine replaced the VIN "Z" in ’96. It is identical to the ’96 VIN "W" engine except for a milder cam and 10 less horsepower. The cam is a p/n 10241692.

1996-’98 VIN "W" WITH BALANCE SHAFT: The VIN "W" engine has a 10541691 camshaft and makes 10 more horsepower than the VIN "X" engine. There is also a special roller cam for the VIN "Z" turbocharged engines (p/n 10214714) along with a couple more with a fuel pump lobe for marine and industrial applications, but these are the common ones that were used in most of the cars and trucks. All of these cams can be identified by the last three digits of the part number that is stamped on the barrel of the cam, just behind the last lobe and in front of the distributor gear.

 

[stuartlittle]

Re: What's the difference. CAMSHAFT

So if I have the crankshaft machined back a little further so the timing chain will fit can I use a non balance cam?

The builder doesn't have it. I think it was used on the thrashed engine that was there when mine was.
This guy doubled his verbal quote to press in pins on a friends rods and sent my crankshaft off to be machined when I told him to let me know what needed to be done before doing anything to it. He also waited 2 months to even start on it. Then once he started he bored it, but didn't hone it. Then when all that was left was honing I heard "It will be done Monday" seven times before he finally finished it. He told me honing will take about an hour so I came up there on a Saturday and SAT IN HIS STORE FOR 3 HOURS while he just sat there watching TV instead of finishing my block.

 

[supersports10]

Re: What's the difference. CAMSHAFT

get your shit and get outta there!!!!!!!!!!

 

[stuartlittle]

Re: What's the difference. CAMSHAFT

I'm going to start pressuring his helper to tell me what happened to my CAM. Maybe he can find it.

 

[dgoodhue]

Re: What's the difference. CAMSHAFT

Did it just have a stock balance shaft cam in it? If it was, I would look on one of the s-series sites to find one. Some of them must have upgrade their stockcam and I imagine their isn't a lot of demand for stock vortec cam's.

 

[stuartlittle]

Re: What's the difference. CAMSHAFT

It was the stock HD cam