Page 285 - 2022-23 Auto Performance Drag Racing

DRAG RACING
Slip-On Collectors
Bolt-on, right out of the box. Mild steel-construction collectors are 12" in length and each have an e-vac bung for easy installation
of a crankcase evacuation system or an oxygen sensor. Choose from black painted or silver ceramic coated. Sold each.
DTH783-71240
Silver Ceramic Coated
Racing Header Gaskets
Custom die-cut gaskets perfectly match Dynatech header
Slips Over Outlet Size
Merge Collectors
Black Painted
flanges. Sold per pair.
Part No.
Racing Header Accessories
Cylinder Head Shown with DTH796-00100 Installed
Part No.
Split-Flow Race Mufflers
Description
Description
DTH794-00000
SB Chevy, Spread Port
DTH794-50001
BB Chevy Gen IV Round Port
2-1/8"
3-1/2"
—
DTH783-61236
2-1/4"
4"
DTH783-71240
—
2-3/8"
4"
—
DTH783-81241
2-3/8"
4-1/2"
DTH783-81245
DTH783-81246
2-1/2"
5"
DTH783-91250
—
Unique reduction angle provides 5-10 added horsepower and increases torque. Slip-on style, black painted collectors are sold individually.
Part No. Slips Over Outlet Size
Turndowns
DTH780-02518
DTH785-10094
18mm O2 Plug
DTH785-10095
O2 Sensor/Pan E-Vac Kit
DTH785-10097
18mm Weld-On Bung
DTH796-00100
SB Chevy Stahl Header Adapter
DTH780-02518
2-1/4"
4"
DTH780-03519
2-3/8"
4-1/2"
DTH780-03510
2-1/2"
4-1/2"
DTH780-03519
2-3/8"
4-1/2"
DTH780-03510
2-1/2"
4-1/2"
Slips over existing exhaust pipe or collector end for a slight
Straight-through muffler
reduces the decibel level of
powerful street or strip engines
and still maintains a powerful
sound. Lightweight, aluminized
muffler has dual pattern core
with stainless steel sound-absorbing material to prevent burnout. Available in oval and round styles.
noise reduction.
Part No.
Collector Extension
DTH780-00314
Description
DTH776-06302
DTH780-00100
Turndown, 3" Dia.
DTH780-00200
Turndown, 3-1/2" Dia.
DTH780-00050
Turndown, 4" Dia.
Part No.
Vortex Cone Muffler
Description
Inlet
Outlet
Oval Race Muffler (14" L x 7" W x 4-1/2" H)
DTH776-14252
Split-Flow Muffler
2-1/2"
2-1/2"
DTH776-14302
Split-Flow Muffler
3"
3"
DTH776-14352
Split-Flow Muffler
3-1/2"
3-1/2"
DTH776-14402
Split-Flow Muffler
4"
4"
Round Race Muffler (6" L x 5" Dia.)
DTH776-06302
Split-Flow Muffler
3"
3"
DTH776-06352
Split-Flow Muffler
3-1/2"
3-1/2"
Collector extensions help increase bottom end torque for quicker 60' times. Extension is 3" dia. x 14" long. Sold each.
Clamp Collars
Connect collector extensions, X-pipes, or mufflers without welding.
The Vortex Cone Muffler is installed into the
header collector near the exit. This compact
304 stainless steel cone insert reduces
noise level without robbing horsepower.
The unique perforated and diagonal baffled
design creates a vortex flow which does not
affect back pressure or scavenge perfor-
mance. Ultra-lightweight - only a 1/2 pound of perfor- mance. Includes mounting hardware. Sold each.
Part No. Size
Part No.
V-Clamp Kits
Description
DTH794-90200
Clamp Collar Kit, 3" Dia.
DTH794-90350
Clamp Collar Kit, 3-1/2" Dia.
DTH794-90400
Clamp Collar Kit, 4" Dia.
Special V-clamps ease the installation or removal of custom exhaust systems. Ideal when adding collector extensions, mufflers, etc. Offered for 2-1/2" or 3" tubing, each kit includes two weld-on V-clamp rings and stainless steel V-band clamp.
Part No. Description
DTH772-32520
3" x 4.750" Long
DTH772-32530
4" x 7.250" Long
DTH772-32540
4.5" x 7.375" Long
DTH794-91225
V-Clamp Collar Assembly, 2-1/2" Dia.
DTH794-91230
V-Clamp Collar Assembly, 3" Dia.
283
2022-23