Know the landed cost before you order
Prices include VAT. Shipping is charged separately and calculated at checkout for your destination. If no shipping option is shown, contact us for a quote before ordering.
Available to Order
Not sure which one? Ask us to confirm fitment first →Prices include VAT. Shipping is charged separately and calculated at checkout for your destination. If no shipping option is shown, contact us for a quote before ordering.
Estimated lead time: 4–6 weeks. Delivery may be faster depending on stock levels. Contact us before ordering if timing matters.
Send the vehicle, engine and current setup if you want us to confirm the exact application before checkout.
| Specification | Details |
|---|---|
| SKU | 21302400 |
| Application | 1968-1982 Corvette C3 with small-block Chevrolet engine |
| Header primary diameter | 1-7/8-inch |
| Collector diameter | 3-inch |
| Material | 304 stainless steel |
Make the engine a bigger part of enjoying your classic Corvette. Kooks 21302400 gives a small-block C3 installation 1-7/8-inch 304 stainless primaries and 3-inch collectors, ready for a matching connecting exhaust.
SKU: 21302400
The application is the 1968-1982 C3 with a small-block Chevrolet engine. On a chassis originally supplied with another engine, the installed-small-block requirement still applies.
The 1-7/8-inch primary size is the difference from the separate 1-3/4-inch version. Match it to your engine and intended use, then have your installer check the car’s engine position and chassis clearance.
We recommend tuning with every header installation so the calibration suits your headers, complete exhaust and fuel. Talk to us to discuss tuning for your vehicle and the parts you are fitting.
For the same 1968-1982 C3 small-block installation, compare the 1-3/4-inch C3 headers if the smaller primary size better suits your engine specification.
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 1968 | Chevrolet Corvette | Installed SBC; original vehicle 5.4L V8 | 21302400 | Small-block Chevrolet installation |
| 1969-1981 | Chevrolet Corvette | Installed SBC; original vehicle 5.7L V8 | 21302400 | Small-block Chevrolet installation |
| 1980 | Chevrolet Corvette | Installed SBC; original vehicle 5.0L V8 | 21302400 | Small-block Chevrolet installation |
| 1982 | Chevrolet Corvette | Installed SBC; original vehicle 5.7L V8 | 21302400 | Small-block Chevrolet installation |
21302400: Competition, off-road and track use only. Not for use on public roads.
The competition-use waiver applies to 21302400.
Estimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.
| Specification | Details |
|---|---|
| SKU | 21302400 |
| Application | 1968-1982 Corvette C3 with small-block Chevrolet engine |
| Header primary diameter | 1-7/8-inch |
| Collector diameter | 3-inch |
| Material | 304 stainless steel |
21302400 is for a small-block Chevrolet installation in the listed C3 chassis.
The collectors are 3-inch. The primaries are 1-7/8-inch.
Prices include VAT. Shipping is charged separately and calculated at checkout for your destination. If no shipping option is shown, contact us for a quote before ordering.
Estimated lead time: 4–6 weeks. Delivery may be faster depending on stock levels. Contact us before ordering if timing matters.
Model year, engine, drivetrain, hardware and existing modifications can all change what fits. Check the applications and supplier notes above, or send us your exact vehicle and setup before ordering.
Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.