SD Concepts

SD Concepts HORSEPOWER HAPPENS HERE! Engine builder, car builder & tuning facility for American muscle cars

SD Concepts is a leader in delivering high performance and late model automotive parts and custom services. Specializing in carbureted, EFI and Boosted applications, we are an "all under one roof" shop. We have an engine dyno, chassis dyno, full machine shop, custom fabrication area and 3 service bays to handle all of your performance needs, including general maintenance and service for your Chevy Ford or Mopar classic or modern muscle car.

Rich is ready for the summer with his red hot Nova! This car sports an SDCE built 460ci fuel injected big block that mak...
05/20/2026

Rich is ready for the summer with his red hot Nova! This car sports an SDCE built 460ci fuel injected big block that makes 633bhp and 600lbft of torque. This engine also sports one of our AFI intake manifolds.

04/25/2026

We'd like to take a minute to discuss suspension bushings, more specifically, polyurethane vs rubber bushings.

Rubber bushings are usually constructed with an inner and outer steel sleeve. The rubber on these bushings is attached to the steel sleeves and cannot rotate seperately from them. This contruction requires the rubber to flex as the suspension moves up and down. This is the style of bushing that you will find on factory vehicles as they give the best ride quality and do not require any regular mantenance.

Polyurethane bushings do not have as much flex or distortion as rubber bushings. This requires that they be constructed differently. They still use an inner steel sleeve, but only sometimes have an outer sleeve. Sometimes the control arm or other component will act as the outer sleeve. Because these bushings do not flex as much, the bushing and the steel sleeves are not attached to each other, and the bushing needs to be able to rotate inside the sleeves. This is where the main downside of polyurethane bushings lies. These bushings need to be greased somewhat regularly or they will dry up, start making noise, and potentially cause binding in the suspension.

Here's an example where polyurethane bushings should not be used. This car came to us just as shown. The bushings in the upper control arms were either installed without being greased properly, or the grease has all worn off. The bushings are now extremely tight and noisy, and there is no way to regrease them without taking the control arm out of the car, which would require the front end to be realigned. Something like this should have a factory style rubber bushing that won't require any regular maintenance.

If you decide to buy polyurethane bushings for your car, or components that have them already installed, we highly recommend looking for something that has a grease fitting installed. If it isn't greasable, be prepared to take that part off at some point when it needs to be regreased.

Charlie brought us his beautiful 72 Challenger for a tune and some suspension work. After dialing in the carburetor and ...
04/24/2026

Charlie brought us his beautiful 72 Challenger for a tune and some suspension work. After dialing in the carburetor and replacing some worn out suspension parts, this car now runs and rides as good as it looks!

Jerry's 454 big block is fresh off the engine Dyno. Stay tuned for engine Dyno video and graph on his Hampton blown beas...
04/13/2026

Jerry's 454 big block is fresh off the engine Dyno. Stay tuned for engine Dyno video and graph on his Hampton blown beast. Be sure to follow along as we remarry it into his 77 Chevy pick-up and finish the tune on the chassis dyno!

04/10/2026

Guess the HP’s! Closest guess wins an SD TEE!

If you’re looking for a cooling system upgrade, we can build you a custom radiator and shroud package that’s sure to kee...
04/09/2026

If you’re looking for a cooling system upgrade, we can build you a custom radiator and shroud package that’s sure to keep your car running cool this summer.

This particular package is going in a customers 1965 Lincoln Continental.

Hey SD Fam! Wendy here. I was going to write a post sharing how awesome my team is but they kinda get sick of hearing it...
04/07/2026

Hey SD Fam! Wendy here. I was going to write a post sharing how awesome my team is but they kinda get sick of hearing it from me! Any chance you can help me out and share a moment or a story on any one of my team mates and what they've done to bring a bit of joy to you or what you appreciate about them and their talents and how they've helped you with your projects? Thank you!!!!

When the rocker arm manufacturer says they’re several months out on making custom stands, sometimes you have to make you...
04/03/2026

When the rocker arm manufacturer says they’re several months out on making custom stands, sometimes you have to make your own to meet a deadline. These stands will be welded together once they are fit on the heads with the rockers in place.

When our customer Mark told us that he was putting one of our 4L80E rear feed filter and pan kits in an off-road truck, ...
02/06/2026

When our customer Mark told us that he was putting one of our 4L80E rear feed filter and pan kits in an off-road truck, this isn't exactly what we were picturing!

Mark and his customer Mitch have been battling it out in the desert at the 2026 King of The Hammers.

Mark told us that the transmission used to have issues with inconsistent line pressures. Since installing our pan and filter set up, those issues are no longer plaguing them. He also mentioned that the transmission used to run around 220 degrees while racing, yet this year, the transmission never got over 204 degrees even with losing one of the coolant fans 2/3 of the way through the race.

Mark and Mitch were able to secure a 3rd place finish in their class in the 1400 Rush.

To purchase your own 4L80E Rear Feed Filter and Pan, click the link below!
https://shop.sd-concepts.com/4l80e-rear-feed-filter-and-transmission-pan/

Address

65 Dexter Road
East Providence, RI
02914

Opening Hours

Monday 9am - 6pm
Tuesday 9am - 6pm
Wednesday 9am - 6pm
Thursday 9am - 6pm
Friday 9am - 6pm

Telephone

+14012708409

Website

http://www.sd-concepts.com/

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