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Old 10-17-2006, 01:19 PM   #16
capriceowns
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Re: F40H.D. vs. F41

Are front springs something I could do in my driveway or is it better left to be done by a shop? my front shocks and springs are gone, everytime i hit a moderate bump the front bounces like 5 or 6 times before settling down, lol.

I might do impala ss springs and 9c1 shocks front and rear. I can order the shocks at wholesale from my work
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Old 10-17-2006, 03:46 PM   #17
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Re: F40H.D. vs. F41

You can do the front springs yourself provided that a) you have a lot of patience, b) you have access to a set of spring compressors, and c) you have lots and lots of patience.
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Old 10-17-2006, 05:20 PM   #18
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Re: F40H.D. vs. F41

I've rebuilt/replaced every single part of a car over the past twenty-five years, and there are two things that just aren't worth doing:

exhaust and ...
front SPRINGS

That was on a 77 Cadillac. Since then I've found out it would have cost about the same as I paid for the springs alone to have the sping shop supply & install them. A few years ago I had my 73 Buick Centurion done all around for CDN$350.00 out the door.

Rear springs are a piece of cake though. I replaced mine a few months ago with moog variable rate springs, and just took them out again on Sunday afternoon to install Monroe Sensatrac coil over shocks. Regular shocks are easy with the springs in, but coil overs really need to have the spring removed as you don't have straight access to the nut/bolts at the top as with the standard shocks.
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Old 10-24-2006, 04:11 AM   #19
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Re: F40H.D. vs. F41

Quote:
Originally Posted by silicon212
I believe it was also on some later model Broughams, 1986 and newer.

yeah, my 88 LS had a rear sway bar... wish i still had that car
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Old 01-24-2013, 05:32 PM   #20
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Re: F40H.D. vs. F41

Why did Chevrolet list a "GU4" as well as a "G92"? Both option codes refer to the rear axle / differential: the former is for "3.08", and the later is for "performance axle". This is as clear as a bowl of mud.
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Old 01-24-2013, 05:43 PM   #21
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Re: F40H.D. vs. F41

My '89 Caprice w/ a F41 suspension option, lists a "GU4" as well as a
"G92" on the "options sticker" inside the trunk lid. Since both of
those codes refer to the differential ratio, it seems like a duplication.
Anyway, it's rather unclear. Can anyone elucidate?

BTW, I tried Edmunds.com to learn more about my car. I entered
its VIN, and it came back claiming that is was an LS Brougham.
It is not----it's just a plain (though loaded) Brougham. So, in
other words, one cannot always believe what they're told,
regardless of the type of source of the info.
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Old 01-24-2013, 10:46 PM   #22
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Re: F40H.D. vs. F41

Nice 6.25 year old necropost!

The G92 might be a redundant code or an enforcement of the GU4 code.

Similar to transmission codes MX0 and MD8, which will often appear together, where MX0 is Merchandised, auto with OD, and MD8 is THM700R4/4L60.
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Old 03-25-2014, 11:07 PM   #23
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Re: F40H.D. vs. F41

G92 is the performance axle and GU4 is the axle ratio 3.08 f41 s the supension code and MW9 is for the 200 R4 tansmission. The Code for a Brougham LS is B6N 9C1 is the code for the police car only has nothing to do with a brougham 9C1 is a base model and will have a BL in the vin vs the brougham will have a BU in the vin and if 9C1 has a 4.3 v6 it have a vin code Z gas or fuel injection and if its the 7 code thats a 350 and the E is a 305 TBI. H code caprices are a 305 with a carb and thats 88 or less 89-90 are E codes only with the exception of 9C1. Also a 9C1 is the only car you could get a 5.7 l code 7 engine from the factory. I had an 84 caprice 87 classic and i currently own an 89 Brougham LS that i have had since 2000 for the most part all chassis parts from 1971 -1996 are generally the same shocks springs and arms ball joints and links. monroe coil overs are the best shock for a caprice in my opinon and the lower springs add to stibility and cornering quite a bit especially if you have the F41 package. one last thing the LS top of the line distintion was only from 87-90 all other LS designations are base model cars and you know you have the LS if you have the quarter top full vinyl tops are broughams only.
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Old 03-26-2014, 12:06 PM   #24
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Re: F40H.D. vs. F41

A few clarifications of the above post:

VIN code E (8th digit) is L03 305 (TBI), code 7 is L05 350 (TBI), code H is LG4 305 (Q-jet) and code 6 is LM1 350 (also Q-jet).

Also, the platform ran from 1977-1996, not 1971.
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2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness!
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Old 03-30-2019, 12:46 AM   #25
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Re: F40 H.D. vs. F41

To GreyGoose006, as re: your post a while back:

No, 9C1 does NOT mean F41. 9C1 is a police car 'package', which likely includes the F40 heavy-duty suspension option --- which is DIFFERENT from the F41 sport suspension option... though there may be some common items for each of those two optional suspension packages.

This is a common misconception, unfortunately.

To renaldorae, I much prefer Delco stock, or Gabriel shocks over any Monroe.

Last edited by Jesse Vincent; 03-30-2019 at 12:51 AM. Reason: clarification
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Old 04-01-2019, 05:39 PM   #26
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Re: F40 H.D. vs. F41

Quote:
Originally Posted by Jesse Vincent View Post
To GreyGoose006, as re: your post a while back:

No, 9C1 does NOT mean F41. 9C1 is a police car 'package', which likely includes the F40 heavy-duty suspension option --- which is DIFFERENT from the F41 sport suspension option... though there may be some common items for each of those two optional suspension packages.

This is a common misconception, unfortunately.

To renaldorae, I much prefer Delco stock, or Gabriel shocks over any Monroe.
I think he was actually asking if the F41 came as a part of the 9C1 package, which is affirmative. I don't think he actually thought that if F41 was present, that it was automatically a 9C1.
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1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1!
2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness!
1967 El Camino L79/M20 old school asphalt raper

Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have.
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