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« Last post by bd on November 07, 2025, 11:39:20 am »
Do you mean R20?
It’s a V20 change to V in 87. The frame is complete rusted and falling a part.
VileZambonie's post simply refers to the thread title, " Using 87 C20 frame for a 87 V20." GM rebranded the 1987 model year light-duty trucks from "C" to " R" and "K" to "V" for marketing reasons. Most people rolled their eyes when GM did that.
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« Last post by dc7432 on November 07, 2025, 10:26:09 am »
It’s a V20 change to V in 87. The frame is complete rusted and falling a part.
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« Last post by Mr Diesel on November 06, 2025, 06:26:04 pm »
The 6 bolt TC were used on the 6.2 diesel. Supposedly heavier duty. Heard very mixed opinions about that though. Not sure if they had other applications too.
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« Last post by dc7432 on November 06, 2025, 03:36:39 pm »
Hello all,
Need some help with this frame ID. Looking at a frame with the following letters and numbers trying to decode:
CHF385812 = Chevy, ?, ?, 30, ?, 1975, ?, ?, ?
Thanks in Advnace
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« Last post by JohnnyPopper on November 05, 2025, 07:39:27 pm »
Chat GPT is your friend.
Given your description (BBC engine + converter with 6 attachment pads + TH400 mention) I believe:
You probably have a heavy‐duty or aftermarket converter that uses a 6-bolt pad layout (possibly built for a TH400 or a TH400‐derived/4L80E application).
It is not a typical factory TH400 behind a BBC but rather an upgraded/modified unit.
The flexplate or converter may have been adapted/swapped for performance/drag use, hence the 6-bolt mounting.
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« Last post by 87ChevyR10 on November 04, 2025, 08:00:25 pm »
I went back and looked after I posted that, and looked at the diagrams and realized they were indeed different. I certainly am gonna need the help, lol. Eh, he'll certainly point out where I'm messing up. I told him, you aint gotta turn a wrench, just point and make sure 2 things. I don't drop the truck on me and i don't blow myself up, to which I told him, you put in more fuel cells in race cars than I will in 2 lifetimes. So, help me not mess that one up, I NEED THAT to work 
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« Last post by bd on November 04, 2025, 07:57:01 pm »
Can't lie, i learned a sway bar was also called a center link looking at the 80s books. my dumb dumb moment. im looking at the diagram scratching my head like, huh? thats a sway bar?
This is not true. The " Center Link" (variably known as an Intermediate Rod and Relay Rod) is the steering rod that links the left and right Tie Rod Ends and Steering Knuckle Arms together on a vehicle with a worm and sector type Steering Gearbox. A " Drag Link" (used predominantly on solid front axle vehicles; 4WD) connects the steering gear Pitman Arm either to one of the Steering Knuckles (generally the driver's side) or to the Center Link/Intermediate Rod/Relay Rod. Unfortunately, the nomenclature has been interchangeably abused to such an extent over the years that it can be difficult to decipher exactly what is being said w/o an accompanying labeled diagram. But then, far too often, diagrams mislabel components making matters worse. So, don't get too caught up in the nomenclature. Rather, study the various diagrams and videos to understand how various components fit together and what they do. The terminology will come to you as you gain experience. Sounds like you will enjoy some welcomed help from your friend. Some of our members may have correctly labeled diagrams that will make things clearer if they wish to post them; maybe even correct what I just posted  
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« Last post by 87ChevyR10 on November 04, 2025, 07:53:06 pm »
Front Sway bars were optional I believe.
Take LOTS of pics, Before, during. They will save your bacon...and some 
Yeah, i went through ALL my pics, and i realized I can see MOST of what I'm about to get into, but i was PRETTY sure i didnt have a front either. And I don't. But I will now. Also, i meant to pass on some incredible news. It's really a blessing. The guy who helped me get into stock car racing, taught me everything I know, offered to help. He knows me well, my wife is gonna get to meet him, has heard alot about him around our race car time together. Alot of other life stories will be told but man, I got to talk to him tonight and he's gonna help me get it all together. My dad turned wrenches for 40 years. Didn't help me a lick on my race cars. But buddy not only helped me get my race car together, he taught me bout motors and tons of other stuff, how to race honestly. Well, he offered to help get it together. And to say the least, there's race related stuff I'd ask my dad he had no clue and i didnt know jack %$t, but id ask him and it'd be like, "Oh, man thats no big deal." So, a lot is off my plate in terms of i can focus more on the time spent with people I haven't seen in a long time. Not to mention the wife is 5 mos pregnant so keeping her happy is going to be key for me to have a peaceful and happy trip to GA. I do plan to update here as much as possible on the fly. I'll likely shoot here in the unworldly event my guy don't know something. But I also want to tie yall into that part of my world a bit closer cause I'ma be getting a lot of footage. If the wife is there, bet your $ she's gon be getting some footage!
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« Last post by JohnnyPopper on November 04, 2025, 07:48:45 pm »
I bought a TH400 from my buddy who has a truck recycling gig here. He said he drove the truck prior to parting it out, checked out.
I noticed when looking at it, that it had a 6 bolt TC. I noticed that all the Flex plates I worked with have 6 mounting holes, but only ever used 3.
Any clue on what this came out of? Are there better features than a standard TH400?
TIA
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« Last post by 87ChevyR10 on November 04, 2025, 07:45:53 pm »
Front Sway bars were optional I believe.
Take LOTS of pics, Before, during. They will save your bacon...and some
Man, look... you aint kidding bout that. I'm finna strip everything with help. lay it out, figure whats finna get dawn scrubbed, degreased and spray painted. Bolts in bags WITH the pieces they go to. I'm honestly kinda giddy at opening up everything for the 1st time. heck, seeing it all for the 1st time. Seeing my baby for the 1st time. If anybody in the world understands what a square means to their owner, its yall. My wife just looks at me crazy tryna explain what all we bout to do.
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