NHRA Pro Stock Throttle Body
Type: Throttle Body
The Holley EFI billet aluminum Pro Stock throttle body is designed to fit Visner Engine Development's oval mounting flange.
Features:
- Massive 25 Square Inch, 7"x 4.5" Oval throttle opening
- Designed to fit Visner Engine Development's oval mounting flange
- Fully adjustable 6 position throttle lever mount
- Includes non-contact magnetic hall effect TPS sensor (Part number 543-112)
Specs:
- Adjustable: Yes
- Bore Diameter: 7x4.5 IN
- Brand: Holley EFI
- Category: Air and Fuel Delivery
- Emission Code: 4
- Fuel Injectors Included: No
- Fuel System Type: EFI
- Gasket Or Seal Included: No
- Grade Type: Performance
- Idle Air Control Motor Included: No
- Mounting Hardware Included: No
- Product Type: Throttle Body
- Throttle Body Finish: Black
- Throttle Body Material: Billet Aluminum
- Throttle Body Spacer Included: No
- Throttle Bore: 7"x 4.5" Oval
- Throttle Position Sensor Included: Yes
Tech Resources:
Extra return spring required for installation. Throttle should not be forced past fully open, rigid positive throttle stop on pedal is needed to achieve this. For positive manual throttle return, a toe loop on pedal is essential. For boosted applications, a cold pipe pressure relief set at or below 80 PSI is mandatory.
Hurry Up! Only 2 items left in stock!
Copy link:
Share:
Ask a question
Shipping
We strive to provide fast and reliable shipping options for all our customers. For detailed information about our shipping rates, delivery times, and policies, please visit our Shipping Page.
Return Policies
Your satisfaction is important to us. If you wish to return an item or request a refund, please review the terms and conditions outlined in our Returns Policy.
Important Notices
- Off‑Road Use Only
Products sold by JS Speed are intended for off‑road use and may be illegal on public roads where emissions or pollution‑control laws apply. - Check Local Laws
Before purchasing or installing, verify all applicable local, state/provincial, and federal regulations to ensure the modification is legal in your area. - Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.
