Speedtech vs. Roadster shop chassis

[Mean 69]

"Couldn't agree more, but a small tire drag Radial car it not what we build. (we CAN) but that is not the intention of the chassis. they are Protouring/ autoX/ roadrace capable chassis.
There is really only 1 rear suspension to run in your case, a $link Drag race rear suspension. (period)"



Thanks for being honest, and I am fully aware of the intent of your setup. In regards to the 4 Link as the only choice, I respectfully disagree, an adjustable 3-Link, with offset upper link to compensate for driveline torque, can and does work.

Cheers!
M

[killer69]

"Couldn't agree more, but a small tire drag Radial car it not what we build. (we CAN) but that is not the intention of the chassis. they are Protouring/ autoX/ roadrace capable chassis.
There is really only 1 rear suspension to run in your case, a $link Drag race rear suspension. (period)"

Thanks for being honest, and I am fully aware of the intent of your setup. In regards to the 4 Link as the only choice, I respectfully disagree, an adjustable 3-Link, with offset upper link to compensate for driveline torque, can and does work.

Cheers!
M

I suppose, The down side that I see to a 3 link would be that you loose 50% of the upper arms so strength "COULD" be an issue with a high HP car. as well there would be no way to add or remove pre load, which in a DRAG ONLY car is very helpful in tuning.
also keep in mind that the 3 and 4 gen Stock eliminator cars with a Torque arm do work really well but they only have maybe 300 hp

[ProBandit]

Speedtech, hands down.

[jeff-san]

wondering if there are any new thoughts since the 2017 feedback? I'm hoping to build a 66/67 Chevelle/Malibu or a 69 Camaro. LT4 T56 for a drivetrain, mostly a street car, canyon carver with the occasional straight line rips....550-600 RWHP is my goal

thank you for any feedback from the group

[1daychevelle]

I'm in the same boat trying to decide between RS and Speedtech. Roadster Shop Spec is straight forward, Fasttrack is no slouch and beautifully tig welded although it seems like Speedtech is all business, both companies great quality though. I spoke to a guy at the Pleasanton Goodguys car show earlier this year before he went out to compete in the Auto Cross. His car is a 65 Chevelle with a Speedtech frame with 315's all around........yes 315's on the front also!!!!!!. Looked incredible to say the least. He expressed nothing but great things about the ride, performance and quality whether on the street or Auto Cross track. He also spoke highly of Speedtechs customer service. One thing that stuck out in our conversation was that his brother in-law also has a 65 chevelle with all the bolt on suspension front and rear, possibly Speedtech (All the big "bolt on" big names perform the same in my opinion). Although the brother in-laws car drives and handles way better than factory, he said, his 65 with the Speedtech frame is night and day noticeably better. I watched him race the Autocross and it gave me goosbumps seeing how well the car performed. I believe he was placed in the top three fastest time. Typing this out almost answers the question for myself on which direction to go, take it for what it's worth.