DSE vs. SpeedTech Performance. . .

[Blake Foster]

Originally Posted by califconstruct

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That ExtReme Rear Torque Arm looks interesting. a seems a bit involved for my skill level for installation, but nothing Richie can't handle.
Warhawk is looking for a new rear setup hear in the near future.


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Well it is more involved obviously than our current on BUT no more difficult than the DSE subframe connectors just more, it ties the entire floor together in 2 directions and provides better exhaust clearance and a drive shaft loop.

[Ron Sutton]

IMHO ...

The DSE, Art Morrison, Roadster Shop & Speedtech front clips are all well built & include quality components.

After measuring & running calcs on all of them, I'm clear they each have good bump steer & camber gain.

The notable differences (advantages) of the Speedtech eXtreme clips & frames are:
* 100% Ackerman for increased grip on inside front tire.
* A spindle custom designed for this suspension ... not the other way around.
* Roll Center above ground in dynamic conditions ... and in exact optimum location ... for increased front end grip ... and corner entry stability.
* Fits 315 front tires with clearance for 30° of steering.
* Increased caster capacity for optimum tire contact patches on both front tires. (Slugged for 7° to 9° static caster ... plus 0.6°-2.0° caster gain in dive).
* A real racing power steering rack from Sweet ($900) ... with dual power to live forever & excel at turning sticky 315's ... instead of reproduction/remanufactured production car rack from Mavel ($300).
* 3-piece race style front sway bar with Speedway Engineering chromoly bars offering a range of rates from 400# to 1300#.
* Lastly is the option to come with Ridetech or JRI shocks with digressive pistons & my modern secret sauce, high grip valving.




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[badazz81z28]

Fitting a 315 on that frame is pretty awesome

[TheJDMan]

Originally Posted by badazz81z28

Fitting a 315 on that frame is pretty awesome

But the trade-off is less header clearance due to the frame rails being located further inboard to allow room for that 315.

[ironworks]

Originally Posted by TheJDMan

But the trade-off is less header clearance due to the frame rails being located further inboard to allow room for that 315.

I'm sure the frame on the Speedtech is alittle narrower, but the bigger issue is just the header and steering shaft. The Camaro we are doing is tight on the headers with the stock position steering shaft. The frame is just narrower in that area over the DSE sub. With the UCA position of the Speedtech makes it a battle. But that geometry position is the gain in clean slate design.

Granted we have Porto type LT4 headers but it's not much different over the LS headers. Plus the steering column has the electric power assist so that add a few variables.

But doesn't change much at all.

[Blake Foster]

YES the steering and headers are TIGHT. but they do work, we have a couple in the shop right now having everything installed including RedZed, Rogers 69. and it is all working out as planned. the port location on the LT is slightly different from what I have seen also.

We can supply all the parts column, shaft kit, headers that all work together.

[Build-It-Break-it]

Blake can you post up a couple of pics of the steering shaft to header clearance on the extreme subframe?

[badazz81z28]

Originally Posted by Ron Sutton

IMHO ...

The DSE, Art Morrison, Roadster Shop & Speedtech front clips are all well built & include quality components.

After measuring & running calcs on all of them, I'm clear they each have good bump steer & camber gain.

The notable differences (advantages) of the Speedtech eXtreme clips & frames are:
* 100% Ackerman for increased grip on inside front tire.
* A spindle custom designed for this suspension ... not the other way around.
* Roll Center above ground in dynamic conditions ... and in exact optimum location ... for increased front end grip ... and corner entry stability.
* Fits 315 front tires with clearance for 30° of steering.
* Increased caster capacity for optimum tire contact patches on both front tires. (Slugged for 7° to 9° static caster ... plus 0.6°-2.0° caster gain iin dive).
* A real racing power steering rack from Sweet ($900) ... with dual power to live forever & excel at turning sticky 315's ... instead of reproduction/remanufactured production car rack from Mavel ($300).
* 3-piece race style front sway bar with Speedway Engineering chromoly bars offering a range of rates from 400# to 1300#.
* Lastly is the option to come with Ridetech or JRI shocks with digressive pistons & my modern secret sauce, high grip valving.




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Proof is on the pavement, not a sheet of paper. I'm Really excited to see a comparable year/model cars compete to show which handles better. I wouldn't be so quick to say anything negative about C5/C6 spindles or OEM steering racks. If it works, it works. Modern cars especially vettss are kicking butt out there at the autocross

[Vince@Meanstreets]

Originally Posted by badazz81z28

Proof is on the pavement, not a sheet of paper. I'm Really excited to see a comparable year/model cars compete to show which handles better. I wouldn't be so quick to say anything negative about C5/C6 spindles or OEM steering racks. If it works, it works. Modern cars especially vettss are kicking butt out there at the autocross

Ideally a sheet of paper is where it all starts.

true but just bolting on a system designed well for another chassis and platform does not usually translate very well to all or other platforms. Same goes for racks, just because the "fit" doesn't make them optimum.

[colorado80439]

I'm sure all application are different, but for my installation, 1st gen w/ LS7, the Speedtech Extreme will require their sheet metal oil pan with remote oil filter and no provisions for a low mount A/C compressor. That would add over $3500 to the build price (adding a front runner, oil pan, remote oil filter). Sure I like the idea of some wider meat up front, but by saving my current front drive low mount A/C compressor system and oil pan set up I can stretch the front and have a wider track.
Disclaimer: Information based on my current knowledge so I could be l afu and would like to be proven incorrect.