Heron's VK SL Build – LS3, TH400, Sleeper Style

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

I’m hoping i can broom broom for real by Christmas, even if it’s just in the garage haha.

Done some more research on completing the driveline. So far I’m looking at a BW diff from Geelong Differentials  with True Track, 31 spline axles, etc. plus new lower control arms, adjustable upper control arms from McDonald Bros, and a new tail shaft from Gibson Driveshafts, for the grand total of $4765.

Suggestions on a diff ratio? I was looking at 3.9’s

[VRSenator065Participant Adelaide SAVR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project) View build HERE Member since: February 17, 2015 Posts: 5 777]

Diff ratio selection is a bit of a mixed bag depending on what you want out of the car.

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

Punchy acceleration but not revving its tits off on the highway. I thought 3.9 would be a happy medium, 4.11s may be a little high

[cava454Moderator 93 VR BT1 View build HERE Member since: February 20, 2015 Posts: 2 390]

Cam? Stall? All play a part in choosing.

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

4K stall. Stock cam for engineering then either a VCM883 or a GM Motorsport Street Racer.

[cava454Moderator 93 VR BT1 View build HERE Member since: February 20, 2015 Posts: 2 390]

4.11 with cams like that.

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

I tried one of those online RPM calculators and it said it’d be doing 3600rpm sitting on 100kmh. Wouldnt that be a little high? i havent driven a car with short gearing so i’m not sure what it’s like.

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

I’m starting to lean towards some 3.7s. Also, a local wheel shop has a set of 20 inch stars for $2090 with tyres, sale is on this weekend. Very tempting.

[cava454Moderator 93 VR BT1 View build HERE Member since: February 20, 2015 Posts: 2 390]

I personally didn’t mind it. Comes down to combo and application.

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

Cheers Cava

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

Got a set of these on Saturday:

They fit well, plenty of clearance between the struts and guards. Tyres are 235/30/20. First time it’s been off the stands since the motor went in last year, doesn’t sit too bad but I want to drop it a little more at the rear to tuck some tyre and have the top of the guard about level with the top of the rim. Felt weird when it was on the ground, everything is so low to work on haha.

It’s ready for wiring apart from the radiator. Called the sparky and he cant get it in until mid-November, so I’ll get the diff ordered and installed, then get the tailshaft measured and built.

[cava454Moderator 93 VR BT1 View build HERE Member since: February 20, 2015 Posts: 2 390]

Once you shorten the diff. Put some nice phat tires on them.

[ChrisMParticipant Melbourne VicVN Calais LS1 View build HERE Member since: August 16, 2017 Posts: 140]

they are a nice looking wheel!

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

Speaking of diffs, I need to work out what length to get. there’s a little bit of room on the inside, how much shorter should i go? 50mm each side?

Thanks Chris, I’ve had my eye on them for a while.

[ChrisMParticipant Melbourne VicVN Calais LS1 View build HERE Member since: August 16, 2017 Posts: 140]

its the best feeling getting the parts we have had our eyes on for  while.

[cava454Moderator 93 VR BT1 View build HERE Member since: February 20, 2015 Posts: 2 390]

Heron SSV wrote:

Speaking of diffs, I need to work out what length to get. there’s a little bit of room on the inside, how much shorter should i go? 50mm each side? Thanks Chris, I’ve had my eye on them for a while.

you not going to take it somewhere to get it done?

Are u doing tubs? Won’t be able to shorten it much if you don’t.

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

Na gonna order one through Geelong Diffs. They’re way cheaper than anyone local to me including postage. Gonna pull the old on out and put the new one in with a mate of mine.

Not doing tubs. Staying basically standard lower arms and adjustable uppers to make sure the pinion angle is right. The wheels seem to fit pretty good on the back and there’s room under the guards to go lower with a standard length diff, but now you’ve got me thinking about getting one narrowed a little to get a bit more room

[cava454Moderator 93 VR BT1 View build HERE Member since: February 20, 2015 Posts: 2 390]

Ahh fair enough. I couldn’t remember what you had decided.

You will be very limited on how much you can shorten it, without mini tubs. So before you give the guy a measurement be 100%.

Best way is to remove diff and lower the car over the wheels and then measure in between.

Obviously this is much easier with a hoist

• This reply was modified 6 years ago by  cava454.

[SLE355Participant View build HERE Member since: April 7, 2015 Posts: 119]

The MOMO’s look good. I don’t think they’ll look good if you shorten the diff and pull them in an inch though.

I don’t think you can go any shorter than an inch at most without tubs.

[Heron SSVParticipant Central Coast NSW2009 Pajero Exceed 84 VK SL LS3 View build HERE Member since: May 5, 2015 Posts: 585]

I think I’ll just go standard length, that’s the safest option. I had another look, there’s enough room to drop it down about 40mm and tuck the tyre without it rubbing.

kinda looks a bit fatter having the face of the wheels sitting out a bit

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