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Messages - X33RS

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916
General Discussion / Re: 3.07 gears
« on: December 01, 2015, 07:38:08 PM »
Probably best I clean this up to take and picture so you guys can determine, because looking again it appears II instead of 11,  and what I think is an H is almost unreadable.  This may not photo well but I'll do my best.

917
General Discussion / Re: 3.07 gears
« on: December 01, 2015, 07:17:37 PM »
Crawled back under it, can't get a good picture on the ground.  Pretty sure it has a C

Date is 8 11 H   Not 100% certain on the H but that's what it appears to be until I can get it on the lift.

Any way to explain the 68 model year date?

918
General Discussion / Re: 3.07 gears
« on: December 01, 2015, 06:38:11 PM »
Thanks Miller,
  Originally frost green, someone put a quick thin coat of primer over the outside, some of the original black stripes show through in spots, however door and trunk jambs still have original paint.  Has white deluxe houndstooth.   Someone added spoilers and cowl hood way back when, probably when they threw a quick coat of primer on the whole thing just to make it all one color again, but I believe the car to be a flat hood and no spoiler car.  Been sitting like this for 30 years, before that not much history and car hasn't moved.   Trim tag reads X33, interior is 729, paint 59,  and is a 12D build. 
I'm still up in the air on the rearend because I don't know what the date spread would be on the axle housing during that time period at Norwood.  The rear predates the data plate on the car but I'll have to get back under it and do some cleaning to get a good read on all of it.  it's caked with 46 years of grime.  Planned to move this thing over to the lift soon, clean, power wash, start on the brakes etc...I should be able to read the casting numbers better that way.  From what I can see so far it's the early casting housing and I can make out the model year of 8 (1968), I need to clean more to see the month clearly.  I can also make out C....BL   so it's stamped with the C spaced away from the BL for some reason.
  Anyway, you are more than welcome Miller, just give me a shout on here before hand, I'll give you contact info and set something up.  I'll be at BJ this year as well.

919
General Discussion / Re: DZ cam pictures
« on: December 01, 2015, 06:09:25 PM »
Okay, you guys all have some interesting ideas.  Maybe this cam isn't aftermarket like I thought and that is what is throwing me off.

Miller, no other markings on the box and no paperwork inside.

Yes there are part numbers on the cam, I'll have to look closer, some are cast in, and some are stamped.  The stamped numbers on the rear journal are extremely faint and hard to read.  I seem to remember something was cast into the cam around the distributor gear.  I'll check that and report back.  I do remember a purple color paint dob around that same area.
   I did contact Crane because they used to own Wolverine, which is who I had thought this cam came from.  They weren't much help in identifying it other than suggesting I do exactly what you suggested Cook, and that is to degree it using their specs and see where it's at.   His only comment was that based off the intake and exhaust positions listed on the box that he thinks 2 degrees of advance are ground into this cam. 
   I'll try to take another picture of the cam itself and post back.  I'm new to the picture thing so bare with me.

920
General Discussion / Re: DZ cam pictures
« on: December 01, 2015, 02:35:03 PM »
I didn't stump you guys with this one did I?
I know it's an old repop but I figured you guys around this long enough may have seen these.

921
General Discussion / DZ cam pictures
« on: December 01, 2015, 01:47:03 AM »
I'm attempting to do pictures, not sure if this will work.

Anyone recognize where this may have been sold and/or the manufacture?
I tend to think it's an old Wolverine grind but can't remember.   I was thinking about using it in the build but without a cam card with specific valve events on this particular grind I can't degree it.  Makes me want to shelf it and buy another one.




922
General Discussion / Re: 3.07 gears
« on: November 30, 2015, 10:38:40 PM »
No biggy, we'll see.  I've been down this road before and find it acceptable.  Being that this is going to be a daily for my wife in a way I'm actually kind of glad, less wear and tear on this brandy new DZ motor.   Right off the bat I was going to drop in a TKO600 because I didn't want her buzzing this thing at 75 mph with 3.73's (the gear I assumed it would have).   This gear will make the trips to Phoenix less stressful.  Now I can wait and see if she still prefers the 5 speed or not.

923
General Discussion / Re: 3.07 gears
« on: November 30, 2015, 08:34:31 PM »
Well both my current 3.73 car, and that 3.50 car had M-21 transmissions (2.20 1st gear), and seemed like you had to rev that 3.50 car so much more to get it going, and then had to have the thing humming farther up the rpm scale to have the power band kick in.  On the other hand I have driven my friends 4.10 car with the M-21 and I could hardly tell the difference with his and my 3.73 car. I could only tell once I got on the freeway that it was turning more Rpms at 65 mph.
I am not disagreeing with your math, just my interpretation behind the wheel
Just my 2 cents.. :)


I think my comments are being misconstrued.  Maybe I didn't come across very well.   I was trying to explain that if you put a wide box in front of that 3.50 geared car, the 1st 3 gears give you better gear multiplication than your other example with a 2.20 box and 3.73's.   I wasn't referring to my 3.07's.

2.20 x 3.73 = 8.20..........2.52 x 3.50 = 8.82
1.64 x 3.73 = 6.11..........1.88 x 3.50 = 6.58
1.28 x 3.73 = 4.77..........1.46 x 3.50 = 5.11

My 3.07's with a wide box really isn't too much different than your 3.50 gears and a 2.20 if you want to compare....Actually you could say the 2.52/3.07 setup is slightly better however not enough to tell
2.52 x 3.07 = 7.73.....2.20 x 3.50 = 7.70
1.88 x 3.07 = 5.77.....1.64 x 3.50 = 5.74
1.46 x 3.07 = 4.48.....1.28 x 3.50 = 4.48

On a side note, better gear multiplication in the first 3 gears of a wide box is why a lot of the PS guys that prefer a stick will choose an M-20 box over the close ratio, even the large rpm drop on the 3-4 is of little consequence with momentum on your side and the cars tend to run a little quicker this way.

924
General Discussion / Re: 3.07 gears
« on: November 30, 2015, 08:21:21 PM »
Actually I've had 2 other cars with 3.08 gears and 4 speeds, and as long as you run a M-20 in it with about a 26-27" tire on it, it's really not that bad.  I drove those cars everywhere.   One of them I had a smog 307 sbc, stock heads and compression untouched, 218 @ .050 cam, performer intake and 600 dp and it went 14.56 and mph in the mid 90's.  It was actually a ball to drive.

That gear with a 2.20 Muncie however I agree would be pretty tough on a clutch.  I wouldn't even enjoy driving it around town to be honest.

You are correct that the WR transmission is very helpful (even with the std 3.73 gear), but your mathematics are a little 'off'...   

 2.52*3.07= 7.73, whereas  2.20*3.73 = 8.206.    8.206/7.73 =1.062 .. Thus the CR 2.20 trans with 3.73 has more than 6% better 'low speed' gearing than the WR 2.52 with 3.07...

A stock Z28 302 ci engine has such little low rpm torque, than higher rpms are required to start even with WR and 3.73 (that is what I have in mine). 

Most of the CR trans sold were for 4.11 or higher numbered rears (for racing).

Gary

I was referring to Austins 3.50 gear example when I made that comparison.  He runs a 2.20 in front of it.  With a wide box in front of that, it would actually be better than a close box and 3.73's.
  I never had a single issue with a weak 307, a wide box, and 3.08's around town.  Tune was important, a fair amount of initial timing lead with limited advance and vacuum advance hooked to manifold vacuum makes all the difference, especially with a large overlap cam.

925
General Discussion / Re: 3.07 gears
« on: November 30, 2015, 12:31:31 PM »
Wow, I have driven a Z with a 3:50 rear, and I thought that was a dog out of the hole.....

With a 2.20 Muncie, yes.  If you run a 2.52 Muncie in front of those gears, it's actually better with more gear multiplication than the 2.20 and 3.73 setup you see most of the time in these cars.
You would have to run 4.10's behind a 2.20 Muncie to equal and only slightly improve gear multiplication over a 2.52/3.55 setup.

926
General Discussion / Re: 3.07 gears
« on: November 30, 2015, 12:29:55 PM »
Actually I've had 2 other cars with 3.08 gears and 4 speeds, and as long as you run a M-20 in it with about a 26-27" tire on it, it's really not that bad.  I drove those cars everywhere.   One of them I had a smog 307 sbc, stock heads and compression untouched, 218 @ .050 cam, performer intake and 600 dp and it went 14.56 and mph in the mid 90's.  It was actually a ball to drive.

That gear with a 2.20 Muncie however I agree would be pretty tough on a clutch.  I wouldn't even enjoy driving it around town to be honest.

927
General Discussion / Re: 3.07 gears
« on: November 30, 2015, 02:19:03 AM »
Wow, I figured scarce but not like that.  I believe I happen to have one Kurt.  Actually glad you responded.   Now that I'm finally digging into this car after 30 years of sitting, I was thinking of getting in touch with you with the info on this car with some pics, to both help with your records and with any luck turn up some history.
   I'm going to say with 99% certainty that this rearend has never been out of the car, has correct casting and is dated prior to the Dec 68 build date of the car.   It's basically a no option Z with the exception of deluxe houndstooth and the RS package, doesn't even have power steering.   All these years I assumed it would have had the standard 3.73's as well.  I find it very odd someone would have paid extra for 3.07's??  Then didn't spring $42 for positraction?  Guess it's safe to say someone didn't want a stoplight stormer and preferred a highway cruiser.
   Anyway, as far fetched as it may sound, if you or someone you know may ever pass through Arizona I'd be more than willing to show the car if someone is interested in verifying what I'm seeing.  I plan to pull the cover and change the gear oil, at which point I'll check the stampings on the gears, but I have no reason to believe it isn't what the BL code is telling me.

928
General Discussion / 3.07 gears
« on: November 29, 2015, 09:04:24 PM »
How many 69 Z's have you guys run across with 3.07 gears?   

929
General Discussion / Black headliner and sail panels??
« on: November 29, 2015, 01:37:05 PM »
Finally getting around to this car.  It's a factory white deluxe houndstooth interior.   The headliner and sail panels as well as the A-pillar moldings are all black.  I'm 100% certain the interior is original and unrestored but the black headliner has me puzzled.   

Is this the way they came?

930
General Discussion / Re: adjustable fuel gauge module?
« on: November 26, 2015, 01:42:26 PM »
Yeah prefer to do it myself anymore.  So much so that I was shocked last time I drove through Oregon and got out to pump gas.  Apparently they have some law up there that you aren't allowed to pump your own gas.  I thought I was going to get tackled by the attendant, lol.   He quickly realized I was an out of towner and explained to me I wasn't allowed to do that.   I thought that was all very strange.  Not only do they pump it for you, but you aren't even allowed to touch it yourself.  I don't know if it's still like that or not, that's been a few years since I've been through there.

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