Insanely awesome!

Holey Wow!!!

I'd like to see a better picture of those LCA's once you get it up on a lift.

Having Ron on your team is a huge advantage, frame looks good. The rack fits in there so nice and tight !

Flawless work, guys! This car is so close to being done.

I went and saw this build in person a couple days ago. Awesome frame and work done on this car.:thumbsup:

Frame looks great and who's rack and pinion is that? Can't wait to see this tear up the track.

Not sure how I missed the last updates...very well done guys, and extremely affordable pricing!

Thanks guys! We're using Sweet for our rack and pinions. Compared to other brands we've used, not only are they precision built with racing in mind but they also handle well the abuse of the wider sticky tires.

Does the Sweet R&P feel every bit as streetable as the OEM based racks ?

I ask because I have a brand W rack which is a nice piece but I found the servo to have a lot of internal seal drag (stiction) which you could feel in the wheel. It wasn't an issue on track or once you got into the turn but it was very annoying while making micro-corrections on rutted roads. It may have been exacerbated by using it inline rather than directly attached to the rack even though there is no logical reason for that to be true.

Nice job It looks great.

Holy crap i cant stop drooling! I'm gunna have to ditch all my SPC stuff and go with your universal front frame kit for my next revision!

Hey Ben, what are the holes in front of the shock tower on the front?

Also, do you have a sheet metal package for the trans tunnel modification and above the rear end in the trunk? I've been talking to Roger there in tech support and I'd like to get all of the sheet metal to modify the floor so it is ready to fit the chassis when I eventually by one.

They're to mount forward down bars from the firewall to those mounting points.

Thanks for covering that question Ahmad!

Backing up a bit, some of the work we did to the under side of the car, cleaning up and smoothing the firewall and prepping everything for paint and box liner.

http://i1299.photobucket.com/albums/...psoermwhlw.jpg

http://i1299.photobucket.com/albums/...ps989wbffk.jpg

http://i1299.photobucket.com/albums/...pstsfyri4q.jpg

http://i1299.photobucket.com/albums/...psp3rmwdqv.jpg

We like to use black epoxy primer to seal everything first, including the interior areas. Then in the exposed areas and the trunk we use spray on box liner as a second application. It's super durable, has a nice color and sheen to it, and along with the texture gives a nice contrast to the shiny frame and suspension parts. We're like form and function here.

http://i1299.photobucket.com/albums/...ps2xhrncby.jpg

http://i1299.photobucket.com/albums/...psbg9kyflt.jpg

http://i1299.photobucket.com/albums/...psostkunbv.jpg

http://i1299.photobucket.com/albums/...pseq1wgzqf.jpg

http://i1299.photobucket.com/albums/...pskmeqhsr3.jpg

Looks good, Ben. Keep up the great work, guys!

where was this a year and a half ago when I started modifiying the hell out of mine.? :( do the wheel wells need to be rolled I would assume. and does the upper part of the fender have to be trimmed as well as the inner fenders? how is the clearance with the inner tie rod bolts to oil pan clearance at full lock? is the body solid mounted ?and one last one for now what is the outside to outside of the front and rear tires? looks great keep up the great work!! love the ride height!!!

Hi Eric, I can answer some of these questions.


With 315's in the front, it can be as narrow as 69.2" outside sidewall to outside sidewall. 71.2" with 335's. It can be wider ... with less backspacing of the rims. But it can't be narrower.

As always thanks for the input Ron!

@E Rodz- That depends on wheel offset and tire size. If you want the fatties on there yes, as with any build similar to this some mild modding is necessary. On the GTO Jeremy rolled up the lip, then trimmed the outer side of the inner fenders so they're straight rather than curving downward and then added about 2" of sheet metal in that area, shaped to contour the outer fender. That moved the inner fenders inward 2" for more turning radius clearance. At the lip the inner fenders are bolted to the outers on the front and rear and on top are sealed off to the outer fender with a rubber strip. Jeremy also did a little bit of reshaping around the control arms since having optimum geometry meant relocating the upper mounts. The end result looks factory, unless you really knew the small details of these cars.

The body is solid mounted, using anodized aluminum bushings that we manufacture in house. You have two options, A. factory height, and B. half height which are about 1/2" tall and drop the car that extra 1/2" without change in suspension geometry.

http://i1299.photobucket.com/albums/...psbezs6mzb.jpg

thanks for your help Ron! I really appreciate it! this answers a lot of questions !
[QUOTE=Ben@SpeedTech;653914]As always thanks for the input Ron!

@E Rodz- That depends on wheel offset and tire size. If you want the fatties on there yes, as with any build similar to this some mild modding is necessary. On the GTO Jeremy rolled up the lip, then trimmed the outer side of the inner fenders so they're straight rather than curving downward and then added about 2" of sheet metal in that area, shaped to contour the outer fender. That moved the inner fenders inward 2" for more turning radius clearance. At the lip the inner fenders are bolted to the outers on the front and rear and on top are sealed off to the outer fender with a rubber strip. Jeremy also did a little bit of reshaping around the control arms since having optimum geometry meant relocating the upper mounts. The end result looks factory, unless you really knew the small details of these cars.

The body is solid mounted, using anodized aluminum bushings that we manufacture in house. You have two options, A. factory height, and B. half height which are about 1/2" tall and drop the car that extra 1/2" without change in suspension geometry.

Thanks for the response this really helps paint a bigger picture! man I wish you guys would have built this a year and a half ago! although I can fabricate a chassis myself it is so time consuming and there are so many details to work out I wish I would have gone this route!!! great job on the engineering and design guys!

Nice build guys. Looks like its coming along great!

Thanks!!

Moving forward with the engine install, lots to do here. This shows the positioning pretty well in the ExtReme chassis. We make custom air intakes for each car, that way we can control exactly where and how we place the air filter. Note we had to machine the "whipple" logo off the supercharger for hood clearance. With some slight mods to the underside of the hood support this all fits under a stock hood!

http://i1299.photobucket.com/albums/...psaupaifri.jpg

http://i1299.photobucket.com/albums/...pscv5s6473.jpg

http://i1299.photobucket.com/albums/...psfmpfd9sg.jpg

http://i1299.photobucket.com/albums/...psxbxnnfla.jpg

Off to the side will be a custom air box that opens up to the grill area for cool fresh air. Up front we have a radiator, A/C condenser, intercooler, and uber heavy duty oil, power steering and trans coolers. Lots of plumbing on deck! Custom radiator support and brackets will be powdercoated silver to match the engine bay.

http://i1299.photobucket.com/albums/...psiem4z5k6.jpg

http://i1299.photobucket.com/albums/...pszsl8nkry.jpg

http://i1299.photobucket.com/albums/...psf9nmzx2g.jpg

With all the measurements lol

Everything looks so pro !
Maybe because you guys are professionals ? :confused59:

The GTO's brakes were feeling a little lonely, luckily the new wheels and tires finally showed up. Check out the impact that brushed nickel has, man that's a cool look! This car sports 295-30-19s up front and 345-30-20s out back.

http://i1299.photobucket.com/albums/...psone3cr6d.jpg

http://i1299.photobucket.com/albums/...ps97ey8n4v.jpg

http://i1299.photobucket.com/albums/...ps3nj4dmy5.jpg

http://i1299.photobucket.com/albums/...ps8e1fpedd.jpg

Is brushed nickel a normal option or did you get special treatment ?
I looked into that a few years ago and Forgeline told me they quit offering it as it was a difficult and expensive treatment and they were dropping it as an option.

Obviously it looks great.

Same thing here...I called Forgeline and they told me the exact same thing.

The rim's hoops were done by a 3rd party. It is a pain in the rear process and very costly, but was a specific request for this build. I think Forgeline said the same to us.

A couple more pics of the cool, ...er, cooling parts. Dual fans, radiator, condenser, intercooler, then fluid coolers. Jeremy's still working on the plumbing and wiring so that'll all be routed and tucked in there nicely when he's done.

http://i1299.photobucket.com/albums/...pshcxb34iv.jpg

http://i1299.photobucket.com/albums/...pseeyz8jmd.jpg

Next up was the roll bar. Not intended to be NHRA legal, our customer wanted a 4 pt bar with rear seat access. Jeremy custom bent this one to be practical and tucked in there nice and neat.

http://i1299.photobucket.com/albums/...psa6otdwyv.jpg

http://i1299.photobucket.com/albums/...psgivlonz6.jpg

http://i1299.photobucket.com/albums/...ps6yub3xeg.jpg

http://i1299.photobucket.com/albums/...psulmfikum.jpg

http://i1299.photobucket.com/albums/...psi0gfe653.jpg

That's what they told me...that it was costly. But, what I don't understand is, if a customer is willing to pay the price...what's the big deal. Hell, if guys will pay upwards of $7k, $8k, $10k for a set of wheels, why deprive him because of a few more dollars. Can't be anymore costly than those $16k carbon fiber wheels they now sell. Not trying to be a complainer, but just stating the obvious that there's evidently a niche for them if guys are asking for it, that's all. Can you PM me the company that did these for you all.

BEAUTIFUL engine bay and cooling setup!

Thanks!!

The interior is outsourced on this car down in Las Vegas so we'll have more pics when it comes back. Stay Tuned!

Any update on this car. I thought it was at LS fest.

Quick update- The underneath is mostly done, the exhaust system being the latest venture. Notice this is 3" stainless tubing with some electric cut outs for play time. I'll have more pics up soon that show all the details under here.

http://i1299.photobucket.com/albums/...psjv8ky31h.jpg

It was on display at LS Fest however it still wasn't quite done yet. Other projects had to be wrapped up to make room to get back on it so more to come soon!

More pics of chassis and exhaust detail, front suspension here. Note things like the tie down hooks for trailering and splined sway bars are standard on ExtReme frames. This customer chose to run 295-30-19s up front, although the suspension is designed to accept 315s. Everything about this frame is design to be the missing link between street cruiser and race track thrasher. One thing I think is cool is the inclination angle on the front shocks is more effective allowing for a lighter rate spring to achieve heavier rate handling characteristics. Headers are designed to play nice with this super low stance. The spindle was redesigned to have even better geometry for even better handling than our current AFX spindle. Any questions or comments feel free to post 'em up!

http://i1299.photobucket.com/albums/...ps9zfzdmov.jpg

http://i1299.photobucket.com/albums/...psupapcxto.jpg

http://i1299.photobucket.com/albums/...psbvqlamw3.jpg

http://i1299.photobucket.com/albums/...psrnylxd62.jpg

http://i1299.photobucket.com/albums/...psot1782vl.jpg

http://i1299.photobucket.com/albums/...psv83rgigf.jpg

Mid section here. As mentioned this car has 3" exhaust that tucks nicely parallel to the Torque Arm. We considered a triangulated 4 link for the A body cars when this chassis was in development mostly because that's what everyone was used to for these cars. That idea quickly got axed to run our Torque Arm instead, there's so many advantages to this system it just didn't make sense to run a 4 link. If you've never experienced how smooth and predictable our torque arm is, next time you're at an event ask a Speedtech equipped car's owner for a ride along.

http://i1299.photobucket.com/albums/...ps6ihrd2fq.jpg

http://i1299.photobucket.com/albums/...psvwaqfozf.jpg

http://i1299.photobucket.com/albums/...ps9p8y6jj1.jpg

Rear suspension. One of the biggest challenges with any lowered Pro Touring car is exhaust clearance, some rear suspensions make it more difficult than others. Our Torque Arm with it's panhard bar is tight too, but still allows ample room for a 3" system. We don't have a specific exhaust kit available, we usually buy a SW mandrel bent stainless universal builder kit and custom fit it to the car. Dutchman preps our 9" axles including welding on all Torque Arm brackets.

Unique to Speedtech are our 2-peice "Articulink" lower trailing arms that use components machined from billet steel to allow the arms to rotate with suspension articulation. This really makes for smooth transitions as you throw the car back and forth in the curves and over bumps in the road. Note that the arms have multiple mount position options as do the shocks so that you can maximize performance with your desired ride height. That billet lower shock mount can be flipped for a 1 1/2" difference in ride height without adjusting the shock at all. This suspension works so well a rear sway bar isn't typically necessary unless you're running a LARGE front sway bar for racing and the rear bar is needed to balance and reduce understeer. We like to use Rick's Tanks for our builds, they come with the extra clearance of notched corners and pretty much any fuel pump requirement provisions.

http://i1299.photobucket.com/albums/...pscrjwjdqq.jpg


http://i1299.photobucket.com/albums/...ps1lgyil3b.jpg


http://i1299.photobucket.com/albums/...psm48o3pi7.jpg


http://i1299.photobucket.com/albums/...psggl7tmqe.jpg


http://i1299.photobucket.com/albums/...psfr8qlppm.jpg

http://i1299.photobucket.com/albums/...pszrvlbwwe.jpg

http://i1299.photobucket.com/albums/...psh1bmeyey.jpg

http://i1299.photobucket.com/albums/...psx8hiplg6.jpg