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#81
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Baltimore was also known to stamp the VIN on the passenger side rail or not at all.
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Ed 1968 GTO (Thanks Mom) 2006 Silverado 2007 Cadillac SRX 2015 Chevy Express 2024 Cadillac LYRIQ |
#82
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I've looked pretty hard and not found one and the rust on top of the frame isn't that heavy. I'll look again after I blast it but have a feeling mine is one that didn't get stamped. The manufacturer of my frame was Parish and their markings on the side of the rear frame rail are pretty easy to see.
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'69 GTO Convertible - Acquired October 2020. An all original project car. Restomod is underway PROJECT THREAD '83 Chevy Choo Choo SS El Camino - LT1 350/4L60e, Owned for 30 Years, completed 2nd restomod in 2018 PHOTO 2019 BMW 440ix - Twin turbo I6, 8spd auto. PHOTO '55 Chevy Bel Air Sport Coupe - Ram Jet 350 / T56 Magnum 6spd, Restomod Completed Sept. 2012, Sold Sept. 2021 PHOTO |
#83
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Getting ready to order a new wire harness and would need to consider the swap.
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1970 GTO (Granada Gold) - 400 / TH400 |
#84
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Quote:
__________________
Ed 1968 GTO (Thanks Mom) 2006 Silverado 2007 Cadillac SRX 2015 Chevy Express 2024 Cadillac LYRIQ |
#85
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Update
Things done since the last update:
1. Finished using wire wheel the top and sides of the frame, turned the frame over and finished the bottom as well. Ground off factory welding spatter on several places around the frame with a Roloc disc. It is ready for blasting. 2. Finished with the wire wheel on the rear axle. It is ready for blasting as well. 3. Removed the ball joints and bushings on the front control arms and all the bushings on the rear control arms. 4. Wire wheeled and scraped all the under coating off all the control arms. All are ready for blasting. 5. Cleaned up the mess!
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'69 GTO Convertible - Acquired October 2020. An all original project car. Restomod is underway PROJECT THREAD '83 Chevy Choo Choo SS El Camino - LT1 350/4L60e, Owned for 30 Years, completed 2nd restomod in 2018 PHOTO 2019 BMW 440ix - Twin turbo I6, 8spd auto. PHOTO '55 Chevy Bel Air Sport Coupe - Ram Jet 350 / T56 Magnum 6spd, Restomod Completed Sept. 2012, Sold Sept. 2021 PHOTO |
#86
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Axle issue
Today I mostly cleaned up the shop and organized parts.
I decided to remove the axle bearings from the axles that I had on the floor. It was the last thing I hadn't dismantled. Not good news. At some point in the past life of this car, the d/s axle bearing had seized and it scored the axle. The bearing was replaced anyway. Once I split and removed the retaining ring, the bearing was loose on the axle. It also appears to me that this got very hot when that bearing failed. You can see the smaller diameter on the axle where the bearing sits. Strange looking pits too: Pretty sure that even though the bearing hadn't failed on the p/s axle, the owner at the time decided to replace that bearing too. It was an identical part. The mechanic didn't do a great job as you can see the mark he made right in front of where the seal rides: This axle is Ok to use though. But I can't in good conscience use the other that had the seized bearing. I'd appreciate some advice here. Look for a used original or buy a new aftermarket axle? Or replace both with new aftermarket axles? In all the cars I've had I've never had to replace an axle before so this is new territory for me.
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'69 GTO Convertible - Acquired October 2020. An all original project car. Restomod is underway PROJECT THREAD '83 Chevy Choo Choo SS El Camino - LT1 350/4L60e, Owned for 30 Years, completed 2nd restomod in 2018 PHOTO 2019 BMW 440ix - Twin turbo I6, 8spd auto. PHOTO '55 Chevy Bel Air Sport Coupe - Ram Jet 350 / T56 Magnum 6spd, Restomod Completed Sept. 2012, Sold Sept. 2021 PHOTO |
#87
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I'm impressed with the speed of progress here! I replaced mine with new aftermarket axles because it was hard to find an original without a worn bearing seat.
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Ken '68 GTO - 464 - Ram Air II heads - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac (build thread | walk around) '95 Comp T/A #6 M6 - bone stock (pics) |
#88
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Decisions
I just ordered a set of the Yukon axles that are 1541H Alloy.
Now I'm trying deciding on where to buy the rest of the parts I need for the rear. I'm now thinking about going with 3.55 gears instead of using the stock 3.23. I think it will be a little bit better of a match with what my plans are. I've already have a new Lunati 60902 cam and lifters that the seller gave me. I like the specs on this cam. SPECS My tire diameter should be 27.5" and I'm planning on a 200-4R automatic and an Edelbrock Pro Flo 4 mpfi setup. I calculate that a 3.55 rear would yield just a touch over 2,000 rpm at 70 mph. The 2.74 first gear would also give a 9.73 torque multiplication which I think would be good using a normal converter rather than a high stall. I am also going to order an Auburn Gear posi carrier for it. I've had good luck with them. I'm also going try and find new Timken bearings for the pinion, carrier and axle bearings.
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'69 GTO Convertible - Acquired October 2020. An all original project car. Restomod is underway PROJECT THREAD '83 Chevy Choo Choo SS El Camino - LT1 350/4L60e, Owned for 30 Years, completed 2nd restomod in 2018 PHOTO 2019 BMW 440ix - Twin turbo I6, 8spd auto. PHOTO '55 Chevy Bel Air Sport Coupe - Ram Jet 350 / T56 Magnum 6spd, Restomod Completed Sept. 2012, Sold Sept. 2021 PHOTO |
#89
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Another plus of going with 3.55’s is the availability of limited slip units. 3.23 units are not offered so you’d have to find a used unit
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My Break Away Squad 1969 Fbird (base OHC, 350, 400HO & Sprint Cvt’s - 400HO & TA ht’s) 1969 Custom S 2dr ht 1969 LeMans (2dr & 4dr ht & Cvt) 1969 LeMans Safari wagon 1969 GTO (2 Cvt, 2 ht & Judge ht) 1969 Cat (3 Cvt’s & 2dr ht) 1969 Ventura wagon 2 seat 1969 Exec 4dr post 1969 Bonnie Cvt & 2 wagons 1969 Bonnie Brougham (4dr ht & Cvt) 1969 Grand Prix 2 SJ’s 1969 2+2 2dr ht (Canadian) |
#90
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I'm looking at the Dana SVL. It appears they have a very good reputation and are reasonably priced.
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'69 GTO Convertible - Acquired October 2020. An all original project car. Restomod is underway PROJECT THREAD '83 Chevy Choo Choo SS El Camino - LT1 350/4L60e, Owned for 30 Years, completed 2nd restomod in 2018 PHOTO 2019 BMW 440ix - Twin turbo I6, 8spd auto. PHOTO '55 Chevy Bel Air Sport Coupe - Ram Jet 350 / T56 Magnum 6spd, Restomod Completed Sept. 2012, Sold Sept. 2021 PHOTO |
#91
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Yep, they only make replacement gears and posit units for the series 3 ratios which is 336 and up numerically. I always found that the 323 or the 308 is the perfect axle if you’re not going with an overdrive unit but if you’ve got that extra gearThen 355 or 390 is really nice
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My Break Away Squad 1969 Fbird (base OHC, 350, 400HO & Sprint Cvt’s - 400HO & TA ht’s) 1969 Custom S 2dr ht 1969 LeMans (2dr & 4dr ht & Cvt) 1969 LeMans Safari wagon 1969 GTO (2 Cvt, 2 ht & Judge ht) 1969 Cat (3 Cvt’s & 2dr ht) 1969 Ventura wagon 2 seat 1969 Exec 4dr post 1969 Bonnie Cvt & 2 wagons 1969 Bonnie Brougham (4dr ht & Cvt) 1969 Grand Prix 2 SJ’s 1969 2+2 2dr ht (Canadian) |
#92
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Looks like my link didn't work for the cam specs:
LUNATI 6902
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'69 GTO Convertible - Acquired October 2020. An all original project car. Restomod is underway PROJECT THREAD '83 Chevy Choo Choo SS El Camino - LT1 350/4L60e, Owned for 30 Years, completed 2nd restomod in 2018 PHOTO 2019 BMW 440ix - Twin turbo I6, 8spd auto. PHOTO '55 Chevy Bel Air Sport Coupe - Ram Jet 350 / T56 Magnum 6spd, Restomod Completed Sept. 2012, Sold Sept. 2021 PHOTO |
#93
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#94
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I've been using a local guy that has done a great job for me in the past. I think he was the top rear end guy at a dealership before he retired. It's been about 5 or 6 years since I had one set up so I hope he is still able to do it. I'll call him soon.
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'69 GTO Convertible - Acquired October 2020. An all original project car. Restomod is underway PROJECT THREAD '83 Chevy Choo Choo SS El Camino - LT1 350/4L60e, Owned for 30 Years, completed 2nd restomod in 2018 PHOTO 2019 BMW 440ix - Twin turbo I6, 8spd auto. PHOTO '55 Chevy Bel Air Sport Coupe - Ram Jet 350 / T56 Magnum 6spd, Restomod Completed Sept. 2012, Sold Sept. 2021 PHOTO |
#95
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FWIW...Auburn Gear sells their HP and Pro series limited differentials in a 3.23. Eaton however, not.
__________________
1970 GTO (Granada Gold) - 400 / TH400 |
#96
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Quote:
__________________
Ken '68 GTO - 464 - Ram Air II heads - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac (build thread | walk around) '95 Comp T/A #6 M6 - bone stock (pics) |
#97
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My block has been bored 40 over and the seller provided me new pistons and rings that are ready for assembly except for the final cylinder hone. They are dished Keith Black 346. I'm not familiar with these engines a lot so I don't know how #16 heads compare with the stock 350HP heads I have. The seller had those redone and ready for installing and figure with the dished pistons it would be about 9.0 to 1 compression. 91 octane is the best I can get where I live but it will be easy for me to control the timing as I'm planning on installing an Edelbrock Pro Flo 4 mpfi setup.
__________________
'69 GTO Convertible - Acquired October 2020. An all original project car. Restomod is underway PROJECT THREAD '83 Chevy Choo Choo SS El Camino - LT1 350/4L60e, Owned for 30 Years, completed 2nd restomod in 2018 PHOTO 2019 BMW 440ix - Twin turbo I6, 8spd auto. PHOTO '55 Chevy Bel Air Sport Coupe - Ram Jet 350 / T56 Magnum 6spd, Restomod Completed Sept. 2012, Sold Sept. 2021 PHOTO |
#98
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Sounds like a similar setup to mine except I'm running a '68 Quadrajet. My block is .040 over too. I think my compression is around 9.5:1 with the pistons I have. No matter the casting number, stock 4bbl D-port GTO heads for '68/'69 are all 72cc.
__________________
Ken '68 GTO - 464 - Ram Air II heads - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac (build thread | walk around) '95 Comp T/A #6 M6 - bone stock (pics) |
#99
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#16 heads are the standard 350hp heads, most are 72cc ... I think some people report theirs as somewhat more, mine cc'ed to 72. And very similar setup to mine also, I'm .040 over, about .005 in the hole, 7cc dish in the pistons, 068 cam, 1971 Q-jet carb. Runs like a top sitting in the chassis, haven't had it on the road yet.
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#100
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