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C70 convertible subframe mod

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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hipcheck
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Year and Model: 1997 850
Location: Arkansas
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C70 convertible subframe mod

Post by hipcheck »

Will a 2004 C70 subframe swap out on a 850?

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erikv11
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Year and Model: 850, V70, S60R, XC70
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Post by erikv11 »

Pretty sure it will yes. They are both FWD on P80 chassis, should bolt right up. Hopefully someone who actually knows for sure will chime in.

The C70 cars have compromises and annoyances, including the obvious one of body structural integrity in the convertible. So Volvo beefed up the subframe to at least partially offset the deficiency. Maybe you already know this, that's why you're asking ...
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6 :shock: 153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k

hipcheck
Posts: 92
Joined: 15 October 2019
Year and Model: 1997 850
Location: Arkansas
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Post by hipcheck »

Yes I know about the C70 convertibles and that is why I am asking. I have almost everything for a subframe, steering, suspension upgrade on my 850 already.

There are 2 C70’s and the U-Pull it hard, one of which is a convertible and the other has brand new control arms (the only part I have not purchased yet)
I would love to clean and paint a subframe and install all the goodies on it before I swap it in.

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erikv11
Posts: 11800
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Year and Model: 850, V70, S60R, XC70
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Post by erikv11 »

That's perfect, you can get the control arms too that fit the C70 subframe!
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6 :shock: 153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k

hipcheck
Posts: 92
Joined: 15 October 2019
Year and Model: 1997 850
Location: Arkansas
Has thanked: 6 times
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Post by hipcheck »

I already pulled a mint set of 17inch Propus wheels off it today

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Chuck W
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Post by Chuck W »

Just make sure that the one with the new arms are the 4-bolt type, as that's what's on the convertible SF's.
'97 854 T5 - Manual Swap/M4.4/COP/NA cams/P2R Brakes/16T/ chassis bracing/ XC70 nose swap
'97 855 GLT - Hers. RN swap/16T/COP/VVT/exhaust/302s/Flashed M4.4/ chassis bracing/ 2 kid seats
'78 GLE - Waiting in the wings. Future whiteblock/T5 swap.

The Others- '83 TBird turbo, '85 Mercury Marquis LTS (1 of 134), '86 LTD Wagon, '81 Granada GL, '76 Beetle, '93 F-150 I6

hipcheck
Posts: 92
Joined: 15 October 2019
Year and Model: 1997 850
Location: Arkansas
Has thanked: 6 times
Been thanked: 7 times

Post by hipcheck »

I pulled parts from it today.

They are 4 bolt and pretty mint. The car had timing belt done a year ago and new parts all over it. I landed a clear non hazy coolant overflow too! I just didn’t know if the 2004 had major changes compared to the 850

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