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1970 GTO Version 2.0

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Old 06-03-2011, 09:00 AM
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Bill Howell and I installed the transmission last night without too much fanfare. I also measured for the driveshaft, which came out to be 55 3/4" from the face of the yoke where the CV mounts to the center of the u-joint on the pinion yoke. Speaking of pinion yokes, after much deliberation I decided that it would be wise to reset the preload on the pinion bearings. This is something that I am not comfortable tackling myself, but one of Bill's friends will handle the task. He has set-up several rear ends for Bill and knowing how hard Bill beats on his cars, I am sure he will do a fine job.

Today I am tackling some minor tasks. I need to pick up a new crush sleeve and pinion seal, an o-ring for the back-up sensor, and ship the slip yoke back to the DSS so the new driveshaft can be balanced as an assembly.

Andrew
Old 06-03-2011, 04:00 PM
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Here are a few of pictures of the transmission and how the new slip yoke sits in the tunnel. You can see in the pictures where my old, 1350 yoke used to make contact with the body. Since the front driveline angle is of no concern, I can safely lower the back of the transmission slightly and get enough clearance for the CV joint.







Andrew
Old 06-05-2011, 04:31 AM
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Subscribed, good info.
Old 06-11-2011, 11:24 AM
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So far, everything is going according to schedule. Since I was replacing the pinion yoke, I chose to have the pinion bearing pre-load reset. That procedure went smoothly, so the rear end is all set.

The DSS made my driveshaft last week and it is on its way to me. The shipping weight on the driveshaft is 25 pounds with the packaging. I suspect the finished weight of the driveshaft is right around 20 pounds with the slip yoke. I would guess that is easily 15 pounds less than my previous driveshaft. While weight saving was a not a primary concern, it is certainly a nice side benefit. The lighter weight will also be gentler on all the bearings in the transmission and rear end. With some luck I should be taking a test drive on Monday evening. Wish me luck!

Andrew
Old 06-13-2011, 11:26 PM
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The driveshaft arrived this evening and I got right on installing it.



It looks amazing. I will take more pictures tomorrow with a better camera.

Once the shaft was bolted up, I measured my driveline angles. Since the front u-joint has been replaced with a CV joint, the front working angle is not irrelevant. The rear angle needs to be as low as possible without being zero. I adjusted my rear control arms so the rear working angle is .5 degrees with the pinion slightly down. This way, under power the pinion will want to climb and the angle should get less or increase slightly in the other direction.

Test drive tomorrow.

Andrew
Old 06-19-2011, 09:13 AM
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Hello Everyone...

I have to apologize for the less than timely update to this thread. It has been a very busy week and a crazy few days. As promised here are a few more pictures of the CV driveshaft from the DSS.





On Wednesday I headed out from Pigeon Forge to Bowling Green, KY. It was the most pleasant drive I have ever done in my GTO. The vibration that I was experiencing before is now completely gone. The car was smooth as glass at all reasonable highway speeds. I ran it up to about 90 and there were no noticeable driveline vibrations that I could detect.

From BG, KY I headed to Chicago to pick up my son. On Friday morning we headed out to the Lane Automotive Motor State Challenge. My goal for attending the event was to enjoy some time with my son and reconnect with some car friends. However, I couldn't resist taking my car on the Gingerman race track. I also figured that some track time will really test my newly rebuilt transmission and the new driveshaft. Gingerman has two long straights where the car can be easily taken up to over 120 mph.

On Saturday we headed to the track, passed tech, and were ready to go. I ran three sessions with my son riding shotgun and managed to get into the to 16 in the Pro-Touring class which consisted of any vehicle older than 30 years. My best time was 1:55.xx At high speeds the driveline was super smooth and the car performed very well. No drama, no puking fluids, 200 degree water temp.

I will post more later...

Andrew
Old 06-19-2011, 10:14 AM
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Sounds good Andrew!!! so a combined problem of driveshaft and transmission, glad you got it solved, and got to see your son for fathers day!!!!
Old 06-20-2011, 08:11 AM
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Very impressive result. Makes you wonder why more people with vibes dont go down this route.........or maybe they do!
Old 06-28-2011, 05:53 PM
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Hello Everyone,

I thought I would give everyone an update as to what I have been up to for the last week. As I posted earlier, I spent Father's Day weekend with my son at the Motor State Challenge. We had a great time and the car performed very well.

On Monday (6-20-11), I picked up my daughter and we headed west. Our mission was to spend some quality time together and visit some of my friends. It also gave us an opportunity to see some of the most breathtaking scenery in the world. Monday evening we arrived safely in Lincoln, NE where we spent the night at my friend Brian's house. Brian is a great guy and he is actually the person that did the body work and paint on my car.

Tuesday (6-21-11) morning we continued our journey west and made our first scenic stop. Well, perhaps the word "scenic" is not entirely accurate to describe Buford, WY, but the town is certainly unique. Buford, Wyoming is the highest town on I-80 between San Francisco and New York City. It also has the distinction of being the smallest town in the US, with a population of 1. Word has it that it used to be a population of 2, but the father of the man that lives in town passed away.



From Buford, WY we traveled a little further west and reached our final destination, Laramie, Wyoming, where my good friend Rory lives. I've known Rory since high school and he is a dear friend and a fellow car and motorcycle enthusiast. Rory's current car is a very neat 1966 Corvair Corsa. The Corsa has a turbo charged engine that makes 180HP. It's a very clean, low mileage (25K miles) car that was repainted (by Brian) and has been slightly lowered. Very cool car! (fukk Ralph Nader. These cars are super cool.)



On Wednesday (6-22-11), my daughter and I made our first trip over the Rocky Mountains. We headed west and reached the town of Centennial, WY. While Centennial is 100 times the size of Buford, it is still no more than a clearing in the road and the last stop before heading over Snowy Range.



On our way up over Snowy Range we had a chance to make some stops at various scenic outlooks. The Rockies have received an exceptionally high snowfall this year and there is still much snow on the ground at higher elevations. In fact, Rory told me that as recently as two weeks before our visit, Snowy Range got over 6 inches of fresh snowfall.





As we climbed higher in elevation, the snow pack got higher and more dense. We eventually made it over Snowy Range pass and had lunch in Saratoga, WY. The North Platte river runs through Saratoga, and it was very high and moving very fast. Quite an amazing sight to see.

On Thursday (6-23-11) Rory took the day off and we headed to Estes Park, Colorado. Rory and I graduated from Park High School in Estes Park and he many of his close family reside there. Estes Park is a little tourist town with a population of about 5,000 in the winter and 50,000 in the summer. Many people have summer homes there, and millions of people pass through every summer on their way to Rocky Mountain National Park. We headed up Trail Ridge Road which connects Estes Park with Grand Lake. About a third of the way up we stopped at an outlook point to take some pictures. The scenery is simply breathtaking.



Don't try this with your carbureted muscle car kids! This picture was taken at an altitude of about 9,000 feet. Modern day fuel with ethanol is prone to vapor lock in low pressure fuel systems. I doubt that my car would have made it up that high if it had a carburetor. My wideband O2 sensor showed a constant 14.0-14.9 AFR the whole way up.





My daughter and Rory were having a good time, goofing off. I think the thin air was getting to them....LOL



The drive over Trail Ridge road is even higher than Snowy Range. Trail Ridge road is the highest continuous road in the USA, reaching a peak of over 12,000 feet! The snow pack on the way up was even higher than Snowy Range.



Passing just over the peak and heading down the western slope there is a little store that sells all sorts of souvenirs and trinkets.



We headed down the western slope of the Rockies and reached the town of Grand Lake, CO. From there we headed to Walden, CO and eventually towards the road to Saratoga, WY. We crossed back over Snowy Range and ended up in Centennial, WY where I took the following picture.



Before heading back (6-24-11) to Lincoln, NE, I snapped the following picture. It shows all the bugs we killed on the day before.



We spent the night at Brian's house again and headed back to Chicago, IL on Saturday (2-25-11). While visiting Estes Park, Rory's father suggested that we make a stop at the Strategic Air and Space Museum, which is located between Lincoln and Omaha, NE. I am so glad we went. I always loved airplanes and actually wanted to be a pilot when I was younger. We pulled up and were greeted to the sight of several Air Force rockets.



Once we stepped inside the front doors, this is what greeted us at the door!



It was simply amazing to see the SR-71 Blackbird in person. It's hard to imagine that this plane could fly from New York to London in 1 hour and 55 minutes. In fact, the true top speed is still classified!

The museum is full of really neat planes, helicopters, and space craft. I am sure that many of you eagle eyed people will spot numerous important aircraft in this picture:



Overall this was an amazing trip. The opportunity to drive my favorite car and share quality time with my daughter was simply amazing. She will be 11 in October and was a trooper in the car. I plan on doing similar road trips in the summer with my kids for as long as they will hang out with me.

My speedometer and consequently my odometer were not working for this trip, but using Google maps I was able to get a rough estimate of the total distance that I traveled. Here is a break down of the mileage. Keep in mind that this doesn't include minor trips here and there and the racing miles around Gingerman Raceway.

Wednesday 6-15-2011
Pigeon Forge, TN to Bowling Green, KY – 244

Thursday 6-16-2011
Bowling Green, KY to Geneva, IL – 439

Friday 6-17-2011
Geneva, IL to Watervliet, MI – 141
Cruise -- 50

Saturday 6-18-2011
Gingerman Raceway 15 racing laps = 30 racing miles

Sunday 6-19-2011
Watervliet, MI to Geneva, IL – 141

Monday 6-20-2011
Geneva, IL to Lincoln, NE – 486

Tuesday 6-21-2011
Lincoln, NE to Laramie, WY – 490

Wednesday 6-22-2011
Laramie, WY to Saratoga, WY – 79
Saratoga, WY to Laramie, WY - 79

Thursday 6-23-11
Laramie, WY to Estes Park, CO – 106
Estes Park, CO to Grand Lake, Co – 47
Grand Lake, CO to Walden, CO – 71
Walden, CO to Riverside, WY – 49
Riverside, WY to Centennial, WY – 50
Centennial, WY to Laramie, WY – 30
Total – 353 miles

Friday 6-24-2011
Laramie, WY to Lincoln, NE – 490

Saturday 6-25-2011
Lincoln, NE to Geneva, IL – 486

Sunday 6-26-2011
Geneva, IL to Pigeon Forge, TN – 601

Grand Total = 4,379

At the end of my road trip I traveled nearly 4,400 miles in my GTO. The car ran beautifully and without any high speed vibrations. Both Nebraska and Wyoming have 75 mph speed limits on the highways, which means going 85 mph is not a huge deal. The GTO does 85 mph at about 2,400 RPM and is smooth as silk. I want to thank the following people and companies for making this trip possible:

Bill Howell - Without your generous help and hospitality, this trip would not be remotely possible.

Rory and Brian - You are my dear friends and I appreciate everything you two have done for me over the years.

The Driveshaft Shop - Without Frank's innovation and attention to detail, my car would still be shaking itself apart at speeds over 75 mph.

Global West - Their various suspension components have taken a licking and kept on ticking.

ATS - Their spindles are amazing and allow me to use the very effective, OEM quality C6 Z06 brakes on the front.

GM - The LSx engine family is amazing and makes road trips like this possible. Without the modern engine and EFI my car would never have traveled over the high altitudes or gotten more than 20 MPG on the trip.

Mike Norris - Mike's tuning smoothed out a few rough spots in my tune and made the journey trouble free.

Detroit Speed and Engineering - The Midwest is plagued by severe summer storms. DSE's modern windshield wiper system kept my windshield clean and allowed me to navigate safely through the inclement weather.

In the end, I want everyone to take trips in their favorite cars. We spend years and thousands of dollars building our dream cars, and unfortunately many end up sitting pretty in the garage without having a chance to do what they were built to do: DRIVE!!!

Andrew
Old 06-28-2011, 08:47 PM
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Andrew, great little story, I love Estes Park, camped up there for a week, I have friends in Boulder, Longmont, and Denver, we really have a good time wheeln west of Longmont what a great state to live in,
Old 06-28-2011, 10:34 PM
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Man I have to say...AWESOME. I love that you're not such a Pontiac snob like some and don't mind modifying and driving a real GTO. I have similar plans for my 68' GTO convertible. I wanna build it so I can drive it anywhere and not have to worry about it and get decent fuel mileage. This thread has def been an inspiration...if only I had the money, a place to store/work on it, the necessary big tools to do the job and I was out of school...Maybe one day.
Old 06-29-2011, 11:50 PM
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Great write up and pix. Beautiful countryside.
Old 07-08-2011, 10:33 AM
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The good folks at Lane Automotive had a photographer during the entire event and I want to thank him for taking these pictures at Gingerman.





I really love going on a road course and not just an autocross. Autocrosses are OK, but nothing compares to being on a technical road course, like Gingerman, and learning the proper line around every corner. I wish that I would have taken an experienced driver along on one of my sessions. I have no doubt that my time would have improved by seconds. In fact, I was given a quick tip on how to successfully navigate one of the corners and that tip alone was worth 2 seconds on my subsequent session.

Good times...

Andrew
Old 07-08-2011, 11:04 AM
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Originally Posted by Project GatTagO





In the end, I want everyone to take trips in their favorite cars. We spend years and thousands of dollars building our dream cars, and unfortunately many end up sitting pretty in the garage without having a chance to do what they were built to do: DRIVE!!!
I can't agree with you more on that statment, although there are some people that just don't get it and are missing alot of the fun of owning/building cars.

I was just in Estes Park a couple of weeks before you, and have some of the same pics!

Old 07-09-2011, 01:37 PM
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Originally Posted by ls1nova71
I can't agree with you more on that statment, although there are some people that just don't get it and are missing alot of the fun of owning/building cars.

I was just in Estes Park a couple of weeks before you, and have some of the same pics!

That's pretty awesome. I bet people were surprised to see your 1930's hotrod making it effortlessly over the Rocky Mountains.

Andrew
Old 07-09-2011, 08:01 PM
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Great job, Andrew.
That snowpack reminded me of "Going to the Sun Road" in Glacier Park, Montana. Beautiful country, it is!
Old 09-04-2011, 02:41 PM
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Just saw the latest issue of PHR magazine and on the last page I got a little ink from the coverage of the Motor State Challenge.



A big thanks to Robert McGaffin for covering the event and to Johnny Hunkins for including a picture of my car in the coverage.

With some luck I will be at LS Fest next weekend!

Andrew
Old 09-12-2011, 09:44 AM
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This past weekend I drove to Bowling Green, KY to attend the Holley LS Fest. Everyone from Holley and FM3 did an amazing job with the event. It was great to see so many old friends and meet some new people. My main goal for the event was to have a good time. The LS Fest offers something for everyone: drag racing, auto cross, speed stop challenge, drift exhibition, country cruise, and show and shine.

On Saturday morning I did a session of autocrossing and it was a good reminder how much I dislike the experience. My car is really not set-up for it and it wallowed around the course like a pregnant yak. Give me a high speed road course and I'll be a smiling fool...

I also participated in the True Street class of the drag racing competition. True street is a good time because it starts with a 30 mile cruise followed by 3 rounds of drag racing. The drive really does a nice job of separating real street cars from race cars. Lingenfelter Performance was the lead sponsor and drove their LS9 powered 5th Gen Camaro, which completed the drive without any problems. Once we were back at the track everyone drove directly to the staging lanes where adjustments to the car were no longer permitted. Everyone runs on an index, meaning the goal is to get as close to a whole number time as possible without going over, over a three run average. So technically there is an unlimited number of classes, but realistically it broke down into 13 second, 12 sec, 11, 10, 9, and overall winner.

Earlier in the day, during practice sessions I ran a best of 12.65@111mph, but my very first practice pass was a 13.038, so the natural place for me to compete was in the 13 second index. On the first round pass I ran a 13.002. Second round was a 12.998. That put me at a perfect 13.000, but I had to race one more round. If I went under 13 seconds that would have been over for me, so the goal was to run as close to 13 seconds as possible without going over. On my last pass I ran a 13.038, which put me at 13.012 for a three run average. That was good enough for the win and a $100 bucks in my pocket. Good times...

I want to thank my good friend Bill Howell for bringing my car. If it wasn't for his kindness I would never be able to do this event.

Andrew
Old 09-12-2011, 09:24 PM
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ANDREW it was great to meet you, the HOLLEY LS FEST was great alot of cool cars and perfect weather. Gave me lots of good ideas hope to have my old car there next year!!!!!!
Old 09-13-2011, 08:57 AM
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Great pics and story. I hope to do the mountains and a road course in my hot rod soon. Looks like I might get a chance at run to the alamo early next year if I'm allowed to join in with the rat pack. As for the camping thing the trunk in the cutlass is almost big enough to sleep in. There should be plenty of room to haul camping gear in there.


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