The Sanderson FRLF100 Limefire header offers the classic lakes style that looks just right on any fenderless rod whether you are building yours as a nostalgia design or ultra-modern. Available for standard or square port flange cylinder heads.
Note: Small Block Chevy version shown.
Comes with all hardware necessary for installation.
- Turnout Tip, Finned Block-off Plate, and other adapters sold separately (add them using the order options)
- If the engine is substantially modified from stock and/or making pretty good horsepower – Please add PowerCaps to your order! Review the “Why Use Power Caps” tab for more information.
- Please Review “SB Ford Flange Styles” information tab.
Engine : Small Block Ford 221-302, 351W
Primary Tube Diameter : 1-5/8″
Collector Diameter : 3½”
Weight : N/A
- 16-Gauge Primary and Collector Tube Thickness
- 3/8″ Thick Flange
- Patented Flange Design Requires NO Gaskets
- Tightest Fitting Header Available Anywhere!
- Made in the USA
- Header Bolt Set
- Standard Block-off Plate
Sanderson’s Ceramic Coating is recommended for every vehicle application and is the default finish selection choice above. To meet high standards of quality, Sanderson applies a multi-layer inside and outside aluminized ceramic coating in-house and then polishes the coating to a high luster. This aerospace and military-grade technology adds excellent protection to your headers, while offering the benefit of thermal control in your engine bay. It also improves cylinder scavenging of exhaust gases, and increases the longevity of your header investment.
SB Ford Flanges
Sanderson offers some of their small block Ford headers in two flange styles—the standard rectangular flange, and the square port flange. A third flange style is available on some header sets for the Roush-style SB 427 cylinder heads. This is not a common flange design. Many aftermarket cylinder head manufacturers now use the square port shape on their products. However, that does not mean the square flange is required. The importance here is to ensure the header flange properly seals to the cylinder head. In most cases, the standard rectangular shape works perfectly, but on other heads, the square port flange is necessary. It is the customer’s responsibility to decide the correct flange for their application. Typically, the ONLY cylinder heads that accept a square port flange are those with either four mounting bolts per port (two are spaced wider apart to accommodate the wider port opening) or very specific cylinder heads that only offer the wider bolt spacing.
NOTE: Sanderson charges extra for headers built with the square port flange due to the additional manufacturing time required.
Below are two images showing the differences in the flange styles. Please use these images and the provided dimensions to ensure the proper flange is selected for your new Sanderson Headers from the drop down menu on the product details.
Why Use PowerCaps?
For those looking at the Sanderson Lakes-style Limefire and Jayster outside chassis headers for their street rod, here is a tech tip that might save some grief, frustration, and possible damage to the headers!
You may already know that the Sanderson lakes-style headers are available with or without connections for an under chassis exhaust system. The ability to have a throaty open exhaust, or a quiet and capped lakes-style header using an under chassis system has been something Sanderson has offered since the original design.
We have found that on stock or mild street rod engines there is not much of an issue if following the normal installation instructions. However, on applications making decent horsepower it is possible to damage the header or header coating near the end of the collector where the under chassis adapter connection is located. The cause of this problem is the turbulence created by the limited distance of dead space just after the under chassis connection and the end cap on the header (when the header is capped and exhaust gasses are being routed through an under chassis exhaust system). The turbulence in this area causes the EGT’s (Exhaust Gas Temperatures) to rise dramatically, and in certain applications this could cause the temperatures to exceed the thermal capacity of the header coating—causing finish damage and discoloration. The problem only seems to occur on high power engines, and engines which are regularly operating at higher RPMs—for example, considerable highway driving on lower-geared vehicles.
The solution is relatively simple, but adds cost to the header purchase. Sanderson designed a component called the “PowerCap” to solve this issue. The PowerCap slides into the collector tube and provides a smooth redirection of exhaust gas flow from the collector tube into the under chassis exhaust tubing. The PowerCap bolts securely into your header using the end cap flange, thereby removing the turbulence area in the collector horn. Another benefit of using the PowerCaps is improved horsepower by improving air flow into the under chassis exhaust. Although the PowerCaps are recommended for higher horsepower applications, they also benefit all applications using the under chassis exhaust connection.
PowerCaps capture hidden horsepower on applications using under chassis exhaust connections. Under chassis adapters allow you to run a quieter under-chassis exhaust system, and adding the PowerCaps increases power and extends the life of your headers.
Limited 5 Year General Warranty
Sanderson Street Rod Headers strives to supply our customers with the highest quality parts and service available in the street rod industry. In keeping with this, we warrant and will repair or replace, at our option after inspection in our facility, any of our products which are found by us to have failed due to defects in either material or workmanship. This warranty is activated by the return of the Warranty Card enclosed with every pair of headers, and is effective for FIVE YEARS * from the date of purchase as indicated on the original invoice.
This Warranty does not cover products that fail due to improper motor tuning, alteration, disassembly, or damage caused by racing, misuse, neglect, abuse, improper installation and/or accident, or when used on applications for which they were not designed or approved. We are specifically not responsible for the costs of removal, installation, transportation, destruction of other components, inconvenience, loss of time, or other personal damages, or for any other associated costs including the application of aftermarket coatings applied by others. Sanderson Street Rod headers shall not be liable for any and all consequential damages occasioned by the breach of any written or implied warranty pertaining to this sale in excess of the purchase price of the product(s) as found on the original invoice.
WRAPPING HEADERS WITH THERMAL TAPE VOIDS WARRANTY.
* Extremely compact header designs which locate the collector in close proximity to the exhaust ports are very sensitive to engine tuning. Improper air/fuel mix or timing of ignition and/or valvetrain can cause early failure due to excessive heat. For this reason, part numbers CC2 and CC3 are offered with a two-year Warranty period only. All other Warranty conditions apply.