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GooglePaySummit Racing Long Tube Headers – Ford 400M (SUM-G9034)
Purchased new for my 1978 F-350 project and test-fit only. These did not fit my specific application (2WD manual truck with clutch linkage and front crossmember interference).
These headers are essentially new, never run, and never heat cycled. I applied high-temperature header paint after purchase.
Manufacturer Details
Brand: Summit Racing
Part Number: SUM-G9034
Header Style: Long tube, one-piece
Material: Steel
Primary Tube OD: 1-5/8 in.
Collector Diameter: 3.00 in.
Primary Tube Gauge: 18-gauge
Flange Thickness: 0.31 in.
Collector: 3-bolt flange
Includes 2.25 in. collector reducers
Bolts and gaskets included
Sold as a pair
Manufactured with mandrel-bent tubing and pressure-formed collectors for improved exhaust flow.
Fitment (per Summit)
Ford Modified V8 6.6L / 400M
1978–1979 Ford F-Series & Bronco
Intended primarily for 4WD applications
Compatible with power steering, power brakes, and A/C
️ Important Fitment Note
These did NOT clear my 1978 F-350 2WD manual transmission truck due to clutch linkage and front crossmember interference. The stamp on the box indicated 4wd. Please verify your application before purchasing.
Condition
Test fit only
Never heat cycled or run
Painted with high-temp
KSL Classifieds makes it easy to buy and sell with peace of mind. Check our safety tips and quickly report anything that doesn’t look right to keep your experience smooth and secure.












3 Days
29
0
$200.00

KSL Classifieds makes it easy to buy and sell with peace of mind. Check our safety tips and quickly report anything that doesn’t look right to keep your experience smooth and secure.















Venmo
CashApp
PayPal
Zelle
GooglePaySummit Racing Long Tube Headers – Ford 400M (SUM-G9034)
Purchased new for my 1978 F-350 project and test-fit only. These did not fit my specific application (2WD manual truck with clutch linkage and front crossmember interference).
These headers are essentially new, never run, and never heat cycled. I applied high-temperature header paint after purchase.
Manufacturer Details
Brand: Summit Racing
Part Number: SUM-G9034
Header Style: Long tube, one-piece
Material: Steel
Primary Tube OD: 1-5/8 in.
Collector Diameter: 3.00 in.
Primary Tube Gauge: 18-gauge
Flange Thickness: 0.31 in.
Collector: 3-bolt flange
Includes 2.25 in. collector reducers
Bolts and gaskets included
Sold as a pair
Manufactured with mandrel-bent tubing and pressure-formed collectors for improved exhaust flow.
Fitment (per Summit)
Ford Modified V8 6.6L / 400M
1978–1979 Ford F-Series & Bronco
Intended primarily for 4WD applications
Compatible with power steering, power brakes, and A/C
️ Important Fitment Note
These did NOT clear my 1978 F-350 2WD manual transmission truck due to clutch linkage and front crossmember interference. The stamp on the box indicated 4wd. Please verify your application before purchasing.
Condition
Test fit only
Never heat cycled or run
Painted with high-temp











