If you ordered an S60 cam, please read this post, need your input quickly.

[turbovanman²]

Matt brought up that most guys will be using a round tooth gear so, if possible, do you want the grind altered so you can use a round tooth cam gear and the cam will be almost straight up.

We've figured out that the cam will be 4 deg advanced running a round tooth gear as the S60 grind was for a square tooth setup.

[BadAssPerformance]

I'm guessing that the keyways are too close if they are both cut into it?

[turbovanman²]

I'm guessing that the keyways are too close if they are both cut into it?

Yeah, he would just change the centerline if possible-which on the regrind, not enough to do. It might be ground straight up so never mind, you will have to check it on installation.

[BadAssPerformance]

Gotcha. Since it is a roller, round tooth makes more sense :thumb:

[MiniMopar]

+1...also is there not a P/N for a square tooth sprocket that will work with a roller cam (i.e. the 88 turbo cars). Or was it the cam that was tweaked?

[TopDollar69]

There were only two square tooth gears that I know of, the HO carb motor unit and the standard one.

[Captain Chaos]

Don't let the 0.5% less alcohol by volume fool you, the Night Train is all business when it pulls into the station. All aboard to nowhere - woo wooo!

:lol:

[TopDollar69]

Now if I could only find some, apparently there are not enough winos in SD to justify any sort of demand for the stuff. All I can find is Wild Irish Rose, and it's just not the same.

[TurboJerry]

I thought the S-60 cam ran better 4 advanced. Used the offset keys to advance it years ago. There are 3 square tooth pulleys, "974" is for turbo and N/A, "992" is for "HO" 2.2, "238" is for Tall deck 2.5. The "557" is the turbo round tooth. (4 adv) The "690" is TBI and would retard the cam 4 deg. "535" is the tall 2.5 round tooth, never seen where that one degrees in. I also used everyone of these to experiment with cam timing before.

[John B]

Now if I could only find some, apparently there are not enough winos in SD to justify any sort of demand for the stuff. All I can find is Wild Irish Rose, and it's just not the same. Mogen David?

[moparzrule]

The TBI and the turbo gear are different? Weird.

[TopDollar69]

True, we do have Mad Dog 20 20 here. Actually I'm in Houston Tx right now and found some Night Train. Hopefully the extra bottle makes it back in my luggage. I was really thinking it would be alot more harsh, but it tastes like any other cheap red wine I've had. Back on track to the cam gears, Good to know the 2.5L tall deck uses a different one. I bet those engines cause massive headaches to core buyers and engine rebuilders.

[Directconnection]

I thought the S-60 cam ran better 4 advanced. Used the offset keys to advance it years ago. There are 3 square tooth pulleys, "974" is for turbo and N/A, "992" is for "HO" 2.2, "238" is for Tall deck 2.5. The "557" is the turbo round tooth. (4 adv) The "690" is TBI and would retard the cam 4 deg. "535" is the tall 2.5 round tooth, never seen where that one degrees in. I also used everyone of these to experiment with cam timing before.


Hey Jerry! The 557 is for '89+ 2.2 T-II, T-IV, and 2.5 T-I. Also, 2.2 TBI has the 557, the 2.5 TBI had the 690.

[John B]

Why did they complicate things so much? Didn't they know how to cut a keyway in the same spot every time at Chrysler?! :banghead:

[TurboJerry]

Hey Jerry! The 557 is for '89+ 2.2 T-II, T-IV, and 2.5 T-I. Also, 2.2 TBI has the 557, the 2.5 TBI had the 690.

I seen 2.2 tbi's with the 690 also. Maybe it got changed at some point?

[mock_glh]

The "557" is the turbo round tooth. (4 adv) The "690" is TBI and would retard the cam 4 deg. "535" is the tall 2.5 round tooth, never seen where that one degrees in. I also used everyone of these to experiment with cam timing before.

The "535" retards the cam 8 deg from the "557". Based on what I've read, this would put the stock roller cam "straight up" at 114 degree lobe centerlines. The "557" is 106 deg, the "690" is110 deg.

[TopDollar69]

That would make those 88 2.5L tall deck cam gears worth a little bit more.

[WickedShelby88]

This would explain why my buddies car didn't even run remotely correctly when he motor together.. Wrong cam sprocket.. I will have to check that next time.

[boost geek]

We need a sticky with all the cam gears and where they end up positioning cams. I put a 557 cam, (89?) in my 88 block, runs good straight up, but is the timing retarded, advanced, or at tdc...

[TurboJerry]

The "535" retards the cam 8 deg from the "557". Based on what I've read, this would put the stock roller cam "straight up" at 114 degree lobe centerlines. The "557" is 106 deg, the "690" is110 deg.

I wish I had the time to degree the 535. I only ran it and didn't like it.

[MiniMopar]

I'm working on a KC article right now for cam sprockets and cams. I'll definitely give credit to Jerry for the very useful sprocket info!