IA Speed & Supply

IA Speed & Supply Engine Dyno Testing & Tuning
Engine Rebuild Kits & Parts
Fuel System Design & Tuning - Carburetor or

Engine Dyno Testing & Tuning Services
*Reasonable Rates
*Carbureted or EFI
*Resale discounts available
*All domestic automotive engines

Fuel System Design
*Cerified Holley Dealer
*Holley EFI systems & tuning
*Carburetor rebuilding & tuning services

High Performance Parts
*Competitive prices
*Fast next day shipping

Give us a call for your Holley EFI needs today!  We sell and support the entire line of Holley products.  Shop local!htt...
05/19/2026

Give us a call for your Holley EFI needs today! We sell and support the entire line of Holley products. Shop local!

https://www.facebook.com/share/p/1CfZGai2yr/

Everything you need for a simple, reliable EFI conversion.

Getting ready for 3rd round after a little rain delay this morning.
05/16/2026

Getting ready for 3rd round after a little rain delay this morning.

Classic or Modern...which would you choose?
05/10/2026

Classic or Modern...which would you choose?

Best wishes to the Fangman brothers, as they hand back the controls.  These guys have done an amazing job since they've ...
04/12/2026

Best wishes to the Fangman brothers, as they hand back the controls. These guys have done an amazing job since they've been involved with the track.

𝗣𝗥𝗘𝗦𝗦 𝗥𝗘𝗟𝗘𝗔𝗦𝗘

Please see the following statement from Fangmann Racing Operations.

Big inch Ford dyno day.
03/26/2026

Big inch Ford dyno day.

03/20/2026

A great interview with Jim Schaechter about his cool Chevy II stocker. He's done a ton of work to make this thing fast, picking up a class win at the Baby Gators. Good job Jim!

Rescued this sweet little TPI small block from uncertain fate. Brought it back to life, and put the fine tune on the dyn...
11/11/2025

Rescued this sweet little TPI small block from uncertain fate. Brought it back to life, and put the fine tune on the dyno Holley EFI system. We'll get it looking good and have it available for sale soon. Great torque curve, plus super fuel mileage and drivability for your street machine!

409 dyno day!
09/30/2025

409 dyno day!

Another prehistoric big block Chevy ready to go.
09/27/2025

Another prehistoric big block Chevy ready to go.

Getting some pretty good numbers out of this little COPO screamer. Holley EFI
07/07/2025

Getting some pretty good numbers out of this little COPO screamer. Holley EFI

Address

15156 Bellevue Cascade Road
Otter Creek, IA
52079

Opening Hours

Monday 8am - 6pm
Tuesday 8am - 6pm
Wednesday 8am - 6pm
Thursday 8am - 6pm
Friday 8am - 6pm
Saturday 8am - 12pm

Telephone

+15636864201

Alerts

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