'67 Shelby slow build

Mike Gray · 06-10-2024, 02:27 AM

Took the car to Bakersfield on two weekends. 2 check out passes 11.73 and 11.30 to make sure it went straight, shifted and stopped without overheating. My tires were really old and it was spinning pretty bad and I had some rubbing issues. Purchased smaller tire and took the car back out this weekend. 1st pass the car pushed through the beam for no time. My fault, it was my 1st time using a 2step on the brake pedal. (Previous car was S/G car with tran brake)
Lowered the 2step to 2,800 and was able to get the first full pass on the car. It ran .400 under the B/SA index (I think it's closer to B weight than A as I haven't weighed the car yet) that run was made at 95 degrees and 3,524 altitude density. Next pass was 1st round win as the other guy broke out due to the cooler morning weather. Next pass was a little messed up as we were held up on the line while the previous pair had issues getting off the track and I red lit. I ran it through at 10.76 at mid 80's temp and 2,900 ft.
I haven't touch anything since I got it running so there's room for a fair amount of improvement with tuning and driver education.

tommy d · 06-10-2024, 07:48 AM

That must feel great to see all your hard work yield such positive results so early.

Mike Gray · 08-19-2024, 02:00 AM

Took the car back out to Bakersfield again to get more experience and be set for the double divisional in Oct. The weather was not as hot but still warm, altitude density about 2200-2500, higher humidity. This time I made 4 tuning changes before heading out (I know one at a time!) mostly timing related and a jet change.
First pass rewarded with a 10.26 @ 128
Second pass (oil down in front of me, lined up bad) up in smoke 2 second 60ft.
Third pass (elimination and another jet change) got distracted bad light, chased but had to give it up. 10.27 @ 117 on a 10.25 dial.
I still left with a smile because of the .500 improvement. Now to search for a little more!

Mike Gray · 10-07-2024, 12:59 PM

First NHRA race in 23yrs, I had a great time even though my driving wasn’t good.
Won 1st round of race one when B. Phillips went red by .003. lost 2nd round to Jerry Stein on a red light and first round of race two I took a nap at the starting line against Michael Wann.
Everyone I met from NHRA and the participants offered encouragement and were very helpful in getting me through from TT to scales and fuel check and showing me the procedures from Q sheets to ladders.
(A little different than the old S/G racing I did)
Sneaking up on the tune, car is running about the same ET it ran before adding weight. The best run was 10.28 with 1.37 60ft. I still need a few more tenths to be more competitive and the driver needs some serious coaching and more practice.
Many Thanks

nickh · 10-09-2024, 02:08 PM

Mike, your doing great! The more laps the more data collected, 1 small change at a time, do not swing for the fence! Keep excellent notes, log every change and what it did or not do.

I miss racing terribly since I retired but love reading and keeping up with new builds. Your car is breath taking and exciting to see you grow with it.

Mike Gray · 10-10-2024, 05:47 PM

AND the photographer is there getting cool photos of your car

Glenn Briglio · 10-11-2024, 06:50 AM

Quote:

Originally Posted by Mike Gray

AND the photographer is there getting cool photos of your car

Radial rear tires ? Add more pressure!

06-10-2024, 02:27 AM	#1
Mike Gray Senior Member Join Date: Oct 2006 Posts: 622 Likes: 312 Liked 692 Times in 200 Posts	Re: '67 Shelby slow build Took the car to Bakersfield on two weekends. 2 check out passes 11.73 and 11.30 to make sure it went straight, shifted and stopped without overheating. My tires were really old and it was spinning pretty bad and I had some rubbing issues. Purchased smaller tire and took the car back out this weekend. 1st pass the car pushed through the beam for no time. My fault, it was my 1st time using a 2step on the brake pedal. (Previous car was S/G car with tran brake) Lowered the 2step to 2,800 and was able to get the first full pass on the car. It ran .400 under the B/SA index (I think it's closer to B weight than A as I haven't weighed the car yet) that run was made at 95 degrees and 3,524 altitude density. Next pass was 1st round win as the other guy broke out due to the cooler morning weather. Next pass was a little messed up as we were held up on the line while the previous pair had issues getting off the track and I red lit. I ran it through at 10.76 at mid 80's temp and 2,900 ft. I haven't touch anything since I got it running so there's room for a fair amount of improvement with tuning and driver education. Attached Thumbnails __________________ Mike 7570 A/SA Last edited by Mike Gray; 06-11-2024 at 04:14 PM.

06-10-2024, 07:48 AM	#2
tommy d Senior Member Join Date: Oct 2010 Location: Indiana Posts: 830 Likes: 1,613 Liked 359 Times in 135 Posts	Re: '67 Shelby slow build That must feel great to see all your hard work yield such positive results so early. __________________ Who owns this car, with the peace sign,mag wheels, and four on the floor?

08-19-2024, 02:00 AM	#3
Mike Gray Senior Member Join Date: Oct 2006 Posts: 622 Likes: 312 Liked 692 Times in 200 Posts	Re: '67 Shelby slow build Took the car back out to Bakersfield again to get more experience and be set for the double divisional in Oct. The weather was not as hot but still warm, altitude density about 2200-2500, higher humidity. This time I made 4 tuning changes before heading out (I know one at a time!) mostly timing related and a jet change. First pass rewarded with a 10.26 @ 128 Second pass (oil down in front of me, lined up bad) up in smoke 2 second 60ft. Third pass (elimination and another jet change) got distracted bad light, chased but had to give it up. 10.27 @ 117 on a 10.25 dial. I still left with a smile because of the .500 improvement. Now to search for a little more! __________________ Mike 7570 A/SA Last edited by Mike Gray; 08-20-2024 at 12:41 AM. Reason: Picture

10-07-2024, 12:59 PM	#4
Mike Gray Senior Member Join Date: Oct 2006 Posts: 622 Likes: 312 Liked 692 Times in 200 Posts	Re: '67 Shelby slow build First NHRA race in 23yrs, I had a great time even though my driving wasn’t good. Won 1st round of race one when B. Phillips went red by .003. lost 2nd round to Jerry Stein on a red light and first round of race two I took a nap at the starting line against Michael Wann. Everyone I met from NHRA and the participants offered encouragement and were very helpful in getting me through from TT to scales and fuel check and showing me the procedures from Q sheets to ladders. (A little different than the old S/G racing I did) Sneaking up on the tune, car is running about the same ET it ran before adding weight. The best run was 10.28 with 1.37 60ft. I still need a few more tenths to be more competitive and the driver needs some serious coaching and more practice. Many Thanks __________________ Mike 7570 A/SA Last edited by Mike Gray; 10-08-2024 at 07:39 PM.

10-09-2024, 02:08 PM	#5
nickh Senior Member Join Date: Sep 2010 Location: Houston,Texas Posts: 824 Likes: 3,584 Liked 650 Times in 194 Posts	Re: '67 Shelby slow build Mike, your doing great! The more laps the more data collected, 1 small change at a time, do not swing for the fence! Keep excellent notes, log every change and what it did or not do. I miss racing terribly since I retired but love reading and keeping up with new builds. Your car is breath taking and exciting to see you grow with it.

10-10-2024, 05:47 PM	#6
Mike Gray Senior Member Join Date: Oct 2006 Posts: 622 Likes: 312 Liked 692 Times in 200 Posts	Re: '67 Shelby slow build AND the photographer is there getting cool photos of your car __________________ Mike 7570 A/SA