VK commy diffs - Aussie V8 | Holden - Ford

wabbit · 04-07-2008, 11:22 AM

Last week, I pulled my finger out and got my VK registered.

It's got the Borg Warner 3.23 diff in it, and I was looking at putting a 3.55 in the arse to bring the cruising RPM up to an acceptable level for the poor little 202.

does the rear tailshaft section have to be swapped over to fit a Salisbury to the old girl, or is it the same as the Borg Warner one?

Reason for the change is that I have 205/65*15 tyres and Borg Warner 5 speed. The cruising revs@100kph are 2000rpm. It's just not enough for the 6.
seeing that I only put these tyres on last week and they only have 2000k on them, swapping tyres isn't really my favourite option. and the 3.55 give me the cruising revs that the engine wants

Smitty2 · 04-07-2008, 01:08 PM

shaft swap I am afraid

Salisburys only ever came witth the U bolt style end
not the BW flange system

hth

Smitty

wabbit · 04-07-2008, 04:35 PM

Quote:

Originally Posted by Smitty2

Salisburys only ever came with the U bolt style end
not the BW flange system

ah, crap
I should have realised that.

thanks, Smitty. now I know.

greenhj · 04-07-2008, 04:52 PM

silliy question, could you not make an adapter from flange to uni and slip it between the diff and shaft?

Smitty2 · 04-07-2008, 05:41 PM

Quote:

Originally Posted by greenhj

silliy question, could you not make an adapter from flange to uni and slip it between the diff and shaft?

shaft will be too long

the Salisbury pinion yoke is recessed back for the uni joint trunnion
to fit into ...and the u bolts go and hold it in place

the BW flange is flat... and so the tailshaft used in a BW setup
has a special endhousing which the uni sits in (bit like a g'box yoke)
and which then bolts to the diff flange

not impossible, welding maching and balancing would all be needed
.. a shaft swap is easier

hth

Smitty

greenhj · 04-07-2008, 05:51 PM

cool smitty.

Ugly Ash · 08-07-2008, 10:01 PM

I have a VC commo sitting here with a small salisbury and tailshaft if you are interested. you could probably find something more local to you I guess.

wabbit · 08-07-2008, 10:03 PM

I've got to go to Townsville for a wedding in 4 weeks, but that might be worth a trip, Ash

What ratio is it?

Ugly Ash · 08-07-2008, 10:04 PM

I wuld have to check mate (no pun intended)
but my place is a bit of a run from townsvile dude, by about 1500k's

wabbit · 08-07-2008, 10:15 PM

I can see how that would be confusing.

what I meant was that I have to go to Townsville in 4 weeks, So I would not be available to go down that way for a little while.

But it might be worth a trip to the state of Brisbane afterwards.
I've got to learn to enunciate my words more better

is that a little clearer?

Ugly Ash · 08-07-2008, 10:29 PM

I think the word you were looking for is betterer.

that said, it is a large detour dude!!
if you wish for me to check the ratio I will and I will let you know.
Ash.

wabbit · 08-07-2008, 10:32 PM

nah, you're closer to me than Clownsville is, anyway

Check that ratio and name your price and I might organise a weekend trip soon.

Ugly Ash · 08-07-2008, 10:33 PM

okey dokey.

evl1308 · 08-07-2008, 11:00 PM

is the diff a 78 series borgy wabbit? if it is, why dont you get a set of 3.45 gears out of a vl six? the ratio isn't that much different to the 3.55.

wabbit · 08-07-2008, 11:40 PM

exploring the options, the 3.55 gives me exactly what i want, with the speedo correct.

to use the 3.45s, I'd have to drop the tyre aspect ratio to achieve the same gains.

just looking for the easiest and cheapest option. it's only a work hack. i'm not keen to spend much on it

04-07-2008, 11:22 AM	#1 (permalink)
wabbit smell something burning? Trade Rating: (0) Join Date: Oct 2004 Location: Rockhampton Ride: VK Commy slugmobile, Kia Rio, LH Torry Posts: 6,079	VK commy diffs Last week, I pulled my finger out and got my VK registered. It's got the Borg Warner 3.23 diff in it, and I was looking at putting a 3.55 in the arse to bring the cruising RPM up to an acceptable level for the poor little 202. does the rear tailshaft section have to be swapped over to fit a Salisbury to the old girl, or is it the same as the Borg Warner one? Reason for the change is that I have 205/65*15 tyres and Borg Warner 5 speed. The cruising revs@100kph are 2000rpm. It's just not enough for the 6. seeing that I only put these tyres on last week and they only have 2000k on them, swapping tyres isn't really my favourite option. and the 3.55 give me the cruising revs that the engine wants __________________ Nothing to see, here Move along, please .

08-07-2008, 10:01 PM	#7 (permalink)
Ugly Ash Part of the furniture Trade Rating: (2) Join Date: Jul 2007 Location: brisbane Ride: HQ monaro coupe and hq wagon (this week) Posts: 1,327	I have a VC commo sitting here with a small salisbury and tailshaft if you are interested. you could probably find something more local to you I guess. __________________ *need some parts for a BBC:* *fuel pump* *alloy inlet manifold* *some nice rocker covers* *also need a rachet shifter to suit (thinking about a quicksilver)*

08-07-2008, 10:03 PM	#8 (permalink)
wabbit smell something burning? Trade Rating: (0) Join Date: Oct 2004 Location: Rockhampton Ride: VK Commy slugmobile, Kia Rio, LH Torry Posts: 6,079	I've got to go to Townsville for a wedding in 4 weeks, but that might be worth a trip, Ash What ratio is it? __________________ Nothing to see, here Move along, please .

08-07-2008, 10:04 PM	#9 (permalink)
Ugly Ash Part of the furniture Trade Rating: (2) Join Date: Jul 2007 Location: brisbane Ride: HQ monaro coupe and hq wagon (this week) Posts: 1,327	I wuld have to check mate (no pun intended) but my place is a bit of a run from townsvile dude, by about 1500k's __________________ *need some parts for a BBC:* *fuel pump* *alloy inlet manifold* *some nice rocker covers* *also need a rachet shifter to suit (thinking about a quicksilver)*

08-07-2008, 10:15 PM	#10 (permalink)
wabbit smell something burning? Trade Rating: (0) Join Date: Oct 2004 Location: Rockhampton Ride: VK Commy slugmobile, Kia Rio, LH Torry Posts: 6,079	I can see how that would be confusing. what I meant was that I have to go to Townsville in 4 weeks, So I would not be available to go down that way for a little while. But it might be worth a trip to the state of Brisbane afterwards. I've got to learn to enunciate my words more better is that a little clearer? __________________ Nothing to see, here Move along, please .

04-07-2008, 01:08 PM	#2 (permalink)
Smitty2 Do you ever leave? Trade Rating: (0) Join Date: Mar 2007 Location: bayside Melbourne Ride: VX SS, VK race car, Zx12R Posts: 1,587	shaft swap I am afraid Salisburys only ever came witth the U bolt style end not the BW flange system hth Smitty

04-07-2008, 04:52 PM	#4 (permalink)
greenhj not to be trusted Trade Rating: (0) Join Date: Jun 2006 Location: melbourne Ride: vz crewman, vs wag, the green one, EH prem soon. Posts: 1,840	silliy question, could you not make an adapter from flange to uni and slip it between the diff and shaft?

04-07-2008, 05:51 PM	#6 (permalink)
greenhj not to be trusted Trade Rating: (0) Join Date: Jun 2006 Location: melbourne Ride: vz crewman, vs wag, the green one, EH prem soon. Posts: 1,840	cool smitty.

08-07-2008, 10:29 PM	#11 (permalink)
Ugly Ash Part of the furniture Trade Rating: (2) Join Date: Jul 2007 Location: brisbane Ride: HQ monaro coupe and hq wagon (this week) Posts: 1,327	I think the word you were looking for is betterer. that said, it is a large detour dude!! if you wish for me to check the ratio I will and I will let you know. Ash. __________________ *need some parts for a BBC:* *fuel pump* *alloy inlet manifold* *some nice rocker covers* *also need a rachet shifter to suit (thinking about a quicksilver)*

08-07-2008, 10:32 PM	#12 (permalink)
wabbit smell something burning? Trade Rating: (0) Join Date: Oct 2004 Location: Rockhampton Ride: VK Commy slugmobile, Kia Rio, LH Torry Posts: 6,079	nah, you're closer to me than Clownsville is, anyway Check that ratio and name your price and I might organise a weekend trip soon. __________________ Nothing to see, here Move along, please .

08-07-2008, 10:33 PM	#13 (permalink)
Ugly Ash Part of the furniture Trade Rating: (2) Join Date: Jul 2007 Location: brisbane Ride: HQ monaro coupe and hq wagon (this week) Posts: 1,327	okey dokey. __________________ *need some parts for a BBC:* *fuel pump* *alloy inlet manifold* *some nice rocker covers* *also need a rachet shifter to suit (thinking about a quicksilver)*

08-07-2008, 11:00 PM	#14 (permalink)
evl1308 I HATE WORK Trade Rating: (1) Join Date: Feb 2008 Location: bunbury wa Ride: vl, vp commo daily Posts: 379	is the diff a 78 series borgy wabbit? if it is, why dont you get a set of 3.45 gears out of a vl six? the ratio isn't that much different to the 3.55.

08-07-2008, 11:40 PM	#15 (permalink)
wabbit smell something burning? Trade Rating: (0) Join Date: Oct 2004 Location: Rockhampton Ride: VK Commy slugmobile, Kia Rio, LH Torry Posts: 6,079	exploring the options, the 3.55 gives me exactly what i want, with the speedo correct. to use the 3.45s, I'd have to drop the tyre aspect ratio to achieve the same gains. just looking for the easiest and cheapest option. it's only a work hack. i'm not keen to spend much on it __________________ Nothing to see, here Move along, please .

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