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1993 Buick Roadmaster Estate Wagon
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Discussion Starter #1
I keep reading about people who fully boxed the frame for increased chassis stiffness and better handling... fully box what, exactly? There's no C channel anywhere on my 93 RMW. It's already fully boxed from one bumper to the other. Am I missing something?

(yes, I checked the outside edge of the frame, too)
 

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Wagon, is the key word.
Sedans have open side rails
Yep, wagon frames are already boxed. And they have a brace at the very back - similar to the “Buick Brace” that gets discussed for the sedans. And they have braces from the frame to the rear crossmember in a location similar to the Dick Miller triangulation brackets.
But they can still benefit from the sway bar brace up front... if you want to stiffen your chassis up some more.
 
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Discussion Starter #5
But they can still benefit from the sway bar brace up front... if you want to stiffen your chassis up some more.
I also have a big tow bar back there, though it doesn't look like it does much to stiffen up the rear beyond what's already there from the factory. I was gonna do swaybars and LCAs at some point in the near future. Must've missed this "sway bar brace up front" thing, though. Off to searching and googling I go...

Thank you!
 

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There were some Buick wagons built without the boxed frame but all Buick wagons with the V92 trailer towing package got the boxed frame, the 9C1 oil cooler, the 9C1 body bushings and both an electric fan and a mechanical fan and 2.93 gears instead of the 2.56. They were also engine HP rated at 10 hp less because of the mechanical fan. V92 wagons got the DMR type braces welded in OEM. If you do the F-Body Pro-Touring front frame brace bolt it in only + it's good, weld it in as well makes a much better positive difference.
 

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Discussion Starter #8
Schweet! This is definitely a wagon with the towing package (based on the production codes in the trunk). While crawling around under there to get the new brake lines in, I was pleasantly surprised at all the factory chassis reinforcements. There's literally no flex when I lift just one corner of the car. Couldn't figure out why there were so many concerns about chassis flex on these forums. Turns out I just happened upon the perfect hot rod candidate for dirt cheap without even realizing it 😁 Makes me want to sandblast the frame and paint it before rust becomes a problem.
 

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Some 93 Buick Wagons with the V92 got 3.23 gears. If yours does, it's just one more reason to preserve that frame.
 

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Discussion Starter #10
Some 93 Buick Wagons with the V92 got 3.23 gears. If yours does, it's just one more reason to preserve that frame.
Oohh, I'm gonna have to check that now 🤣 I'd much prefer 3.23 gears
 

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There were some Buick wagons built without the boxed frame but all Buick wagons with the V92 trailer towing package got the boxed frame, the 9C1 oil cooler, the 9C1 body bushings and both an electric fan and a mechanical fan and 2.93 gears instead of the 2.56t. They were also engine HP rated at 10 hp less because of the mechanical fan. V92 wagons got the DMR type braces welded in OEM. If you do the F-Body Pro-Touring front frame brace bolt it in only + it's good, weld it in as well makes a much better positive difference.
Scott,
Please give examples of a 91-96 Buick Wagon with a no boxed frame.
Because you are talking about Electric + mech fans, I must ASSUME you are talk 94-96 LT1.
I have NEVER seen a 9C1 engine cooler production in a V92 wagon,
They had the same coolers as an Impala , mech primary, higher wattage secondary
The is no frame difference by part number, there is no bushing difference by part number , V92 vs no V92

If you have solid evidence of your claims, please share them

Edit, as you know every 94-96 "B" wagon were LT1s EXCEPT the 2 1994 L99 cars built.
If any car would have a "lesser" frame they would be it , I would think.
As you also know, the only one we know of is the EX sunkworks LT4 6 speed.
It has a full boxed frame


Gerry
 

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Discussion Starter #12
Did all L05's have mechanical fans, regardless of presence or absence of the towing package? I was under the impression that all cars without towing package had all-electric fans, even pre-LT1
 

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Discussion Starter #13
Some 93 Buick Wagons with the V92 got 3.23 gears. If yours does, it's just one more reason to preserve that frame.
Doesn't this mean 3.23 gears? (can't physically check right now, car still has front end on jack stands for brake line replacement)

 

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Did all L05's have mechanical fans, regardless of presence or absence of the towing package? I was under the impression that all cars without towing package had all-electric fans, even pre-LT1
99% sure there were no electric option of any kind in 91-93 L03 L05.
The parts book supports this with them all having the same part number shrouds.
Also no electric fan part numbers.
 

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Discussion Starter #16
99% sure there were no electric option of any kind in 91-93 L03 L05.
The parts book supports this with them all having the same part number shrouds.
Also no electric fan part numbers.
Not that RockAuto is any kind of authority on the matter, but this is why I was under the impression that electric fans were used on non-towing cars:
 

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"Not that RockAuto is any kind of authority on the matter"

That sums it up perfectly. Never use any parts house as a compatibility source.

My V92 (mostly deleted) wagon does not have the oil cooler ................ where did that come from?
 

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Discussion Starter #18
My V92 (mostly deleted) wagon does not have the oil cooler ................ where did that come from?
Mine does 🤷‍♂️ Option code KC4. I guess I assumed that was automatically added when optioning V92
 

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Discussion Starter #19
Not that I care, I'll be ripping out the L05 in favor of a 6.5TD over the winter anyways 🤣
 

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My 99% left the 1% 😉
If there are electric fan 91-93 buicks around, I stand corrected .
I cant find info or wiring diagrams but that in itself does nor prove one way or another.
Guys talk about putting LT1 fans on the earlier cars, I havn't heard talk of 93 buick fans.
Anyone out there got a 91-93 electric fan Buick so we can put this down?
 
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