View Full Version : coil over or wishbone suspension & why?

15-03-08, 10:45 AM
Guys I had a look at 2 options for a 289

Which option would you choose and why?

a) "4" frame: powder coated steel, w/coil over suspension, standard"
b) "3" frame: powder coated steel, w/transverse leaf suspension, option replaces 4" frame" (995 extra)

Link here 289 KMS/FIA Pricing (http://www.kirkhammotorsports.com/pricehome/kirkham-pricing289kmsfia.htm)

15-03-08, 07:46 PM
Difficult one???
I would expect the coil sprung car to drive/handle better. But if this car was to have real authenticity value then it would have to be leaf sprung.
Also note that $995 is just extra cost of the cost of the 3", leaf sprung bare chassis. The original type suspension that would be needed to fit it is an additional $15,995!!! ;)

15-03-08, 08:38 PM
The Kirkham website does state that the original suspension is $995 extra, but that is a mistake. I have had it confirmed by Kirkhma that it should be $16,000 extra.

Unless you have very deep pockets, I guess that rules out that possibility.


15-03-08, 09:08 PM
289 KMS/FIA Options
Interactive Price Worksheet

Please select your options and the total price will be shown at the bottom of the page. Total includes the $44,995 base price.

Click on the name of the option for more information
some options shown installed on a 427 car

Part #

Aluminum Body

aluminum body finish: filed (http://www.kirkhammotorsports.com/pricehome/page.html)-00002aluminum body finish: brushed (http://www.kirkhammotorsports.com/pricehome/page.html)7,99900022aluminum body finish: polished (http://www.kirkhammotorsports.com/pricehome/page.html)13,90000003main stripes (w/ brushed or polished body only) (http://www.kirkhammotorsports.com/pricehome/page.html)1,99500004pit stripes on fender (w/ brushed or polished body only) (http://www.kirkhammotorsports.com/pricehome/page.html)395 hard top, Le Mans style, aluminum15,000

4" frame: powder coated steel, w/coil over suspension, standard- 3" frame: powder coated steel, w/transverse leaf suspension, option replaces 4" frame995 004044" frame: stainless (replaces standard mild steel frame) (http://www.kirkhammotorsports.com/pricehome/page.html)4,995 3" frame: stainless (replaces standard mild steel frame)4,995 roll bar: steel, powder coated (http://www.kirkhammotorsports.com/pricehome/page.html)-00092roll bar: stainless (http://www.kirkhammotorsports.com/pricehome/page.html)59500296aluminum frames for hood, trunk, and doors (lightweight) (http://www.kirkhammotorsports.com/pricehome/page.html)995
Body Hardware
wiper system (included) (http://www.kirkhammotorsports.com/pricehome/page.html)-00297jack hooks, lightweight aluminum, set of 4 (http://www.kirkhammotorsports.com/pricehome/page.html)9500291brake scoops, fiberglass, set of 2 (http://www.kirkhammotorsports.com/pricehome/page.html)24500007heat shield for foot boxes, polished stainless (http://www.kirkhammotorsports.com/pricehome/page.html)49500008ferrules, door, set of 8 (http://www.kirkhammotorsports.com/pricehome/page.html)95 no wheel well foam-00005wheel well foam, uninstalled (http://www.kirkhammotorsports.com/pricehome/page.html)9500476wheel well foam, installed (http://www.kirkhammotorsports.com/pricehome/page.html)595
00161carpet, nylon, not installed (http://www.kirkhammotorsports.com/pricehome/page.html)-00477carpet, nylon, installed (http://www.kirkhammotorsports.com/pricehome/page.html)69500016carpet, wool, not installed (http://www.kirkhammotorsports.com/pricehome/page.html)79500478carpet, wool, installed (http://www.kirkhammotorsports.com/pricehome/page.html)149000303seat tracks, adjustable, billet aluminum (http://www.kirkhammotorsports.com/pricehome/page.html)69500019sun visors (http://www.kirkhammotorsports.com/pricehome/page.html)19500020wind wings (http://www.kirkhammotorsports.com/pricehome/page.html)19500087pedal assembly: brake & clutch, billet aluminum (http://www.kirkhammotorsports.com/pricehome/page.html)9500021powder coat rear bulkhead and wheel wells (http://www.kirkhammotorsports.com/pricehome/page.html)495 steering wheel, wood, 15" (http://www.kirkhammotorsports.com/pricehome/page.html)-00307steering wheel, leather wrapped, 15" (http://www.kirkhammotorsports.com/pricehome/page.html)-00410steering wheel, wood, 16" (upgrade from 15") (http://www.kirkhammotorsports.com/pricehome/page.html)39500023leather covered dash (http://www.kirkhammotorsports.com/pricehome/page.html)39500024seat belt, upgrade to 6 point harness (requires roll bar) (http://www.kirkhammotorsports.com/pricehome/page.html)12500025halon fire suppression system (http://www.kirkhammotorsports.com/pricehome/page.html)52500311fresh air ventillation system, driver's footbox (http://www.kirkhammotorsports.com/pricehome/page.html)49500312fresh air ventillation system, passenger's footbox (http://www.kirkhammotorsports.com/pricehome/page.html)49500402dropped footbox, (for tall drivers) (http://www.kirkhammotorsports.com/pricehome/page.html)1,195
wiring harness w/ relays and switches (included) (http://www.kirkhammotorsports.com/pricehome/page.html)-00027battery, sealed, with mounting tray (http://www.kirkhammotorsports.com/pricehome/page.html)20000028battery cutoff switch (recommended) (http://www.kirkhammotorsports.com/pricehome/page.html)95 gauges, full set (included) (http://www.kirkhammotorsports.com/pricehome/page.html)-
Engine Compartment
00078oil cooler (heat exchange unit only)19500052oil cooler, complete assembly89500032motor mounts, 289, 302 or 351W block, set of 2 (http://www.kirkhammotorsports.com/pricehome/page.html)29500042fuel filter and fittings (http://www.kirkhammotorsports.com/pricehome/page.html)19500414stainless steering shaft and u-joints (upgrade) (http://www.kirkhammotorsports.com/pricehome/page.html)125
00423transmission mounts, Tremec, must be welded to frame (http://www.kirkhammotorsports.com/pricehome/page.html)39500056mount & bracket, for toploader (http://www.kirkhammotorsports.com/pricehome/page.html)9500502shift lever handle, for Tremec29500054shift lever handle, for toploader (http://www.kirkhammotorsports.com/pricehome/page.html)19500055shift linkage, for toploader, heim jointed (http://www.kirkhammotorsports.com/pricehome/page.html)29500058shift knob (http://www.kirkhammotorsports.com/pricehome/page.html)25

00061Kirkham differential, aluminum w/ mounts (http://www.kirkhammotorsports.com/pricehome/page.html)5,00000063adapter kit to mount cast-iron Jaguar differential (instead of Kirkham diff) (http://www.kirkhammotorsports.com/pricehome/page.html)39500064breather hose, differential (http://www.kirkhammotorsports.com/pricehome/page.html)9500066driveshaft (http://www.kirkhammotorsports.com/pricehome/page.html)32500067half shafts, set of 2 (http://www.kirkhammotorsports.com/pricehome/page.html)89500068driveshaft safety loop (recommended) (http://www.kirkhammotorsports.com/pricehome/page.html)95

shocks & springs, set of 4 (included)-00069shocks, Penske w/ Hyperco springs, non-adjustable, set of 4 (http://www.kirkhammotorsports.com/pricehome/page.html)49500070shocks, Penske w/ Hyperco springs, adjustable, set of 4 (http://www.kirkhammotorsports.com/pricehome/page.html)2,995 suspension, original style, (replaces standard billet suspension)15,995

brakes, vented disk, standard size-00403rotors and calipers, front, 1.250 inch thick (upgrade from .810) (http://www.kirkhammotorsports.com/pricehome/page.html)29500011reservoirs, brake and clutch, billet (upgrade) (http://www.kirkhammotorsports.com/pricehome/page.html)95

Wheels & Tires

tires, 235/60-15 front and 255/60-15 rear w/ wheels (included) (http://www.kirkhammotorsports.com/pricehome/page.html)-00409tires, Goodyear large letter, set of 4 w/ wheels, (upgrade) (http://www.kirkhammotorsports.com/pricehome/page.html)995

mount body on frame (included) (http://www.kirkhammotorsports.com/pricehome/page.html)-00071assemble to complete roller (not including items listed below, installation of carpet or wheel well foam)4,99500072alignment, preliminary (final alignment requires engine & transmission installation29500060labor, fill and bleed brake system125

Price with selected options: $

It's there.;)

15-03-08, 09:25 PM
I think they need to replace the "W/" with "For".

3" frame: powder coated steel, w/transverse leaf suspension, option replaces 4" frame

15-03-08, 09:43 PM
Well spotted :)

16-03-08, 07:13 AM
The racing 289s always outhandled the big block, coil sprung cars - both types have wishbones, it is just coilover vs leaf spring.

Corvette Z06 has transverse leaf spring, so it can't be bad eh?

I am confused by the Kirkham pricing put up by Dave - is the standard 289/FIA chassis a 3" tube with transverse spring?

16-03-08, 08:17 AM
I believe their "standard" chassis for the 289 is the same one as used for the 427 i.e. 4" round tube with coil-overs.