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Old 01-07-2020, 11:25 AM   #626
propav8r
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Starting to think about tires...currently the car has 17x10 rear wheels with 245/35-17s sorta stretched and the front is a 17x8.5 with a 215/35-17.

Eventually I'd like to get 275/40-17s on it all the way around, but wheels to do that aren't in the budget at the moment.

For the first set of tires, I'm thinking of doing 255/40-17s square. I can get RE71Rs in that size without breaking the bank, and they'll fit the wheels okay. They'll still be stretched a bit on the back, but not terribly so, and I should get a nice square sidewall on the front.
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Old 01-07-2020, 11:15 PM   #627
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Well this showed up in the driveway this weekend:















Warmed over, cam only 5.3 that made 300 to the tire. Driveshaft let go at a high speed and beat the hell out of the rear floor.

It's got a T56, Cadillac brakes, an 8.8, swap harness, and a bunch of other stuff I need on it.

I bought it with the intention of stripping it down to a shell and robbing all the good stuff for my '79. Looking at it now, I'm inclined to pull everything I need but the running motor, put some stock brakes and a stock diff in it, and just putting a GM auto in it.

I dunno. I'll beat on the floor with a large hammer for a bit until I lose interest and probably strip it anyway.
If you think you're going to sell these wheels, keep a brother in mind
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Old 01-07-2020, 11:50 PM   #628
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Starting to think about tires...currently the car has 17x10 rear wheels with 245/35-17s sorta stretched and the front is a 17x8.5 with a 215/35-17.

Eventually I'd like to get 275/40-17s on it all the way around, but wheels to do that aren't in the budget at the moment.

For the first set of tires, I'm thinking of doing 255/40-17s square. I can get RE71Rs in that size without breaking the bank, and they'll fit the wheels okay. They'll still be stretched a bit on the back, but not terribly so, and I should get a nice square sidewall on the front.
Whats the offset on those wheels front and rear?
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Old 01-07-2020, 11:52 PM   #629
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If you think you're going to sell these wheels, keep a brother in mind
Whatcha buildin'?
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Old 01-08-2020, 02:23 AM   #630
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Whats the offset on those wheels front and rear?
Front 17x8.5 et30 with 1.25" (32mm) adapters 215/45R17 Sumitomo HTR ZIII
Rear 17x10 et20 no spacers/adapters 245/40R17 Sumitomo HTR ZIII (~et1 with a stock rear axle, 8.8 is 3/4" longer each side)

^From the build thread on the wagon.
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Old 01-08-2020, 11:12 AM   #631
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NGL, kyote's auto 244 handled obnoxiously well when we were trying to catch you guys on the loop drive. A little rubbing, but he wasn't really taking turns slowly.
It's easy in a NA 240, you just leave the AW70 in 2nd gear, keep the gas pedal pinned, and don't ever brake
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Old 01-08-2020, 11:33 AM   #632
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It's easy in a NA 240, you just leave the AW70 in 2nd gear, keep the gas pedal pinned, and don't ever brake
Opposite technique was required in my 240. Lol, I wasn't very used to it yet.
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Old 01-08-2020, 12:44 PM   #633
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Opposite technique was required in my 240. Lol, I wasn't very used to it yet.
Yes, the old "More Power" mobile! I was impressed many SE's ago when it was 16v and e85!
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Old 01-10-2020, 03:40 PM   #634
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Whatcha buildin'?
240 shenanigans is the happenings. going to document, but would like to hold off the project reveal until SE so those in attendance get first look
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Old 01-10-2020, 04:14 PM   #635
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Yes, the old "More Power" mobile! I was impressed many SE's ago when it was 16v and e85!
This time around I was mostly staying off the power until I had it nice and lined up for the next straight, and then press the 'catch up quickly' pedal down. brrAAAAAAAAp, on the brakes.
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Old 01-10-2020, 04:41 PM   #636
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Front 17x8.5 et30 with 1.25" (32mm) adapters 215/45R17 Sumitomo HTR ZIII
Rear 17x10 et20 no spacers/adapters 245/40R17 Sumitomo HTR ZIII (~et1 with a stock rear axle, 8.8 is 3/4" longer each side)

^From the build thread on the wagon.
Jared thanks for the info. I appreciate it. I may have missed the link to the original wagon build thread if you had posted one.
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Old 01-10-2020, 04:50 PM   #637
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I was thinking about single rounds and a foglight grille, but this car has just always had spider eyes. I think it works.

Mmmmmmmm
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Old 01-10-2020, 08:52 PM   #638
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Jared looks great, and glad to see and hear you got it running with the 5.3 swap from the donner car. Have you driven it yet?
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Old 01-10-2020, 11:19 PM   #639
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This time around I was mostly staying off the power until I had it nice and lined up for the next straight, and then press the 'catch up quickly' pedal down. brrAAAAAAAAp, on the brakes.
Yeah, our drive was really great for that. The rain and fog made things extra fun.
It was fun watching the next straight coming and then waiting for the power.

I want LS 240 now.
Dammit.
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Old 01-13-2020, 12:41 AM   #640
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Did some measuring for a driveshaft tonight, and cut half my shifter bump out of the floor to get better transmission clearance.

A one piece driveshaft would need to be 51-13/16” long, and given my gear ratios and planned tire size, critical speed on that steel shaft would be 110mph. Guess that means I’m looking at a 2-piece driveshaft (and that I got really lucky when I had this car up at 140mph in the Nevada desert years ago.)
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Old 01-13-2020, 12:54 AM   #641
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As they say, two shafts are better than one. Loads of videos on the topic when I researched it
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Old 01-13-2020, 11:53 PM   #642
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Did some measuring for a driveshaft tonight, and cut half my shifter bump out of the floor to get better transmission clearance.

A one piece driveshaft would need to be 51-13/16” long, and given my gear ratios and planned tire size, critical speed on that steel shaft would be 110mph. Guess that means I’m looking at a 2-piece driveshaft (and that I got really lucky when I had this car up at 140mph in the Nevada desert years ago.)
Im doing just fine with my single 3" driveshaft. Taken up to 130mp without issues.
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Old 01-14-2020, 11:13 AM   #643
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One piece will be fine. I probably have about double your power on a 2 1/4 one piece and haven't had a issue for 4 years
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Old 01-14-2020, 01:48 PM   #644
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Two piece. Your kid is going to ride in and drive this car (someday).
I doubt you’ll maintain those critical speeds, but safety is safety.
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Old 01-14-2020, 03:59 PM   #645
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Spent some time on the phone with Denny's driveshaft today. He recommends a one-piece steel driveshaft, but with a few caveats. He strongly recommended changing from a flat flange on the diff to a pinion yoke.

He said he's seen a number of failures with the flat bolt-on flanges that he thinks can be attributed to the flat flanges introducing a little bit of runout in the shaft. He also said that my driveshaft length is nowhere near requiring a two-piece shaft.

Everything he makes is balanced to 10,000rpm. He also recommended a tube material that's got a higher torsional strength than regular mild steel tubing, so I'll probably do that too.

Anyhow, I'm aware I'm probably overthinking this, but after seeing the carnage on the other car, this is one area where I don't want to cut any corners. Or floorpans.

Denny's was the only shop out of 6 or 7 I've called that actually had a conversation about what I was doing and why I didn't just want the cheapest option, and talked through all the available options instead of just trying to sell me something right then.
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Old 01-14-2020, 06:25 PM   #646
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One piece likes to vibrate and hits under the body when the rear squats down. I recommend sticking to a two piece driveline.
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Old 01-14-2020, 06:29 PM   #647
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Yeah I would not do a 1 piece unless you plan on making a tunnel for it, if the car is going to be as low as that wagon.
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Old 01-14-2020, 07:05 PM   #648
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One piece on my lemons car is fine. Doesnt vibrate.
2 1/2 diam iirc 1310 joints. NA motor with t5.
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Old 01-14-2020, 08:02 PM   #649
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Ive used dennys driveshafts before. Great group of people. My one piece doesn't rub and I have zero vibrations. I also used solid u-joints for longevity. Get your angles correct and you won't have issues. Im also pretty sure Im using 1330's in the wagon.
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Old 01-22-2020, 05:21 PM   #650
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I have a one piece with a flat flange- no vibrations and doesn’t hit anything with T56 and Volvo 1031.
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