|Naturally Aspirated||Forced Induction|
|SL/R 5000 A9X||1306||6530||398||3918||239|
|SS A9X Hatch||1242||6210||379||3726||227|
Source: "60 Years of Holden" Terry Bebbington pg 338
The maximum engine capacity is based on the original tare of the model vehicle fitted the the largest engine available without optional accessories. WA currently uses 1204 kg for both hatch and sedan. However you should be able to get them to accept either the SS or A9X hatch tare for a hatch and the SL/R or A9X sedan tare for a sedan.
The engine must meet the pollution standards of the donor vehicle or the year of engine manufacture, you can not fit an older engine. For example a LS3 must run CAT's and the factory computer. In WA if you fit an aftermarket computer then you will be required to pass a five gas emission test which costs around $200.
See page 21 of the NCOP11_Section_LS_Tyres_Suspension_Steering_V2_1Jan_2011%20v3.pdf.
For the LX Torana the reference tyres are the SS and A9X tyres.
|Model||Rim||Offset in.||Offset mm||PCD||Stud||Tyre||Circumference Feet||Circumference Meters||Dia mm|
|LX S & SL||13x5.5 JJ||1.25||31.75||5 X 4.25||7/16 UNF||175SR13|
|LX RTS SL/R & SS||13x6.0 JJ||1.25||31.75||5 x 4.25||7/16 UNF||CR70H13|
|L34 & A9X||14x6.0 JJ||0.25||6.35||5 x 4.75||7/16 UNF||DR70H14||6.3768||1.9436||619|
|Tyre||P-Metric Equivalent||Std Width||Std Dia||Max Width||Min Dia||Max Dia|
The first letter of the Alpha-Numeric tyre size is the load rating and size relationship. The main problem is deciding which modern profile to use to for the Alpha-Numeric profile conversion. For example 78 could be converted to 80, 75 or 70. It appears to be common practice to round down to the most commonly available modern profile.Load rating to modern 70 series A = 175, B = 185, C = 195, D = 205, E = 215 etc. Load rating to modern 80 series A = 165, B = 175, C = 185, D = 195, E = 205 etc.
Rims-n-Tires.com - Wheel / Tire Size Calculator
The Wheel and Tyre Bible Page 1 of 2
The trick to rim measurements is that the rim width is measured from the inboard tyre bead seat to the outboard tyre bead seat. Backspace is measured from the inboard flange to the hub. There is typically 0.5" of flange beyond the tyre bead seat. If you measure an 8" wide rim from flange to flange it will measure 9.0". If you measure from the inboard tyre bead seat to the outboard tyre bead seat it will measure 8.0".Inboard Flange = Typically 0.5" Outboard Flange = Typically 0.5" Overall Width = Inboard Flange + Rim width + Outboard Flange Rim Centreline = Overall Width / 2 Offset = Back Space - Rim Centreline Back Space = Rim Centreline + Offset Front Space = Rim Centreline - Offset When comparing different width rims you should look at the offset. If the offset stays the same then the centre of the rim will be in the same position. If the offset stays the same then the backspace will increase or decrease by half the increase in rim width. 7" rim with 4" backspace has 4 - 4 = 0 Offset 8" rim with 4.5" backspace has 4.5 - 4.5 = 0 Offset
Rims-n-Tires.com - Wheel / Tire Size Calculator
Tire Size Conversion ChartThe Wheel and Tyre Bible Page 1 of 2
Wheel track is measured from the centre of the tyres. Wheel track will vary on the front suspension depending on ride height as the control arms swing in an arc. To maintain track all you have to do is maintain the standard offset regardless of the rim width.
The track can not be reduced and can only be increased by a maximum of 25 mm. If you are fitting flares then you should be able to use the A9X track as your base track.
|Imperial Measurements - inches||Converted Metric Measurements mm|
|Model||Source||Rim Offset||Track Front||Track Rear||Front BUF||Diff BUF||Rim Offset||Track Front||Track Rear||Front BUF||Diff BUF|
|LX RTS SL/R & SS||LX Owners Manual||1.25||55.30||54.40||57.80||56.90||31.75||1,405||1,382||1,468||1,445|
|L34||Holden Torana Performance Handbook pg. 64-65||0.25||57.89||56.82||58.39||57.32||6.35||1,470||1,443||1,483||1,456|
|L34||60 Years of Holden pg. 337||0.25||57.90||56.82||58.40||57.32||6.35||1,471||1,443||1,483||1,456|
|A9X||60 Years of Holden pg. 337||0.25||57.90||56.82||58.40||57.32||6.35||1,471||1,443||1,483||1,456|
|A9X||Just Holden's - A9X edition pg. 23||0.25||58.50||57.10||59.00||57.60||6.35||1,486||1,450||1,499||1,463|
The fuel tank must be fitted with an unleaded fuel restrictor and labelled unleaded fuel only. I fitted the filler neck from a VN Commodore. You can buy press in unleaded fuel restrictors. If you have a aftermarket tank then it must comply with the departure angle rule to be engineered. Drop tanks for example Brown Davis that do not comply with the departure angle rule have been know pass over the pits but they will not pass the engineering checklist.
See page 5 and item 1.7 on page 12 of NCOP9_Section_LM_Fuel_Systems_01Jan2011_v2.pdf
The LH parts and LX parts manuals list the following housings.
Housing Assy - 2.78:1, 3.08:1 A.R. 6 cyl Eng 2819067
Housing Assy - 2.78:1, 3.08:1 A.R. 4.2 Litre Eng 2819067
Housing Assy - 3.36:1, 3.55:1 A.R. 6 cyl Eng 2819068
Housing Assy - 3.36:1, 3.55:1, 3.90 A.R. 4 cyl Eng 2819068
Housing Assy - 2.78:1, 3.08:1 A.R. 5 Litre Eng exc L34 Eng. 2825743
Housing Assy L34 Eng 9935109
Housing Assy A9X option 92002517