Drag Car & Boat Racing Pipes - 2016



These pipes were & are being developed for Drag Racing
and other high torque applications


Drag Car & Boat Racing Pipes Length Weight Price Stock #
2.5cc (.10-.15)(9°-.3"-16°)(1)std. Aero pipe
(this pipe has a 9/16" head pipe and 11/8"d)
(all the 3.5cc pipes have a 5/8"hp and 11/4d)
10" 1.2oz 41.95 1110
3.5cc (.20-.36)(9°-.3"-16°)(1)std. Aero pipe 11" 1.2 oz 42.95 1120
3.5cc (.21-.36)(14°-1"-18°)(1)beginners pipe
Drag Car racing pipe(also see #1326)
10 1/2"
(11 1/2)
1.4 oz 46.95 1126
(1326)(4)
3.5cc (.21-.36) (12°-.3"-18°)(1)
Drag Car - Sharp-off-the-line Pipe(2)
10 5/8" 1.4 oz 51.95 1127
3.5cc (.21-.36) (12°-.3"-16°)(1)
Drag Car - Draw-wave - Stub-end pipe(3)
10 1/2" 1.4 oz 44.95 1128

(1.) These dimensions are as follows - First front cone angle
Second high point length and Third back cone angle.
(2.) The 1126 (1326) has a sharp front cone (14°) and a long center (1"),
the 1127 & 1128 have a longer front cone (12') and a short center (.3")
so the front cone + the center are about the same on all 3 pipes.
(3.) The 1126 (1326) and the 1127 have standard stingers (1"),
the 1128 has a short stinger (.3"), to make the back cone (16° not 18°)
and the stinger section about the same as the 1126 (1326) and the 1127 (3.5").
(4.) The #1126 and the #1326 are the same pipe, except the lead-in tube
is a little longer (about 1.000") on the #1326 (the old Prather Pipe).
(The inch and angle measurements are only approximations
and not exact measurements)
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Drag Car & Boat Racing Headers



Image #1 - 10' Straight back header -/- Image #2 - 180' & 5' up cars left side


Image #3 - 180' Wrap to 75' header -/- Image #4 - 180' Wrap to 75' on a car


Header Type Bend radius Price Stock #
.730 id cap 10' up-for back exhaust sys. (1)(image #1) - 30.95 1451
.730 id cap 180' + 5' up-for front exhaust sys.(2)
( 180' bend to the cars left side - image #2 )
.625r 45.95 1455
.730 id cap Wrap to 75' for left exhaust sys.(4)(image 3&4) .625r 56.95 1457
We have identified the OS.21 XZ motors use a .730 id cap header.
The above listed headers should work for both car/buggy and marine set-ups.
As we learn the id cap size of other motors we will list them.
We are currently producing three custom headers for Racing Drag Cars
1. A straight back 10° up for cars with forward facing motors.
2. A candy cane header (180°) for reverse mounted motors (forward exhaust).
3.(on-hold)A wrap-to-cntr header(180° with a reverse 90°)for side mounted motors.
--(this header is on hold because the distance from the center of the motor --
-- to after the reverse 90° = aprox. 5 1/2" - too long for tuning!)--
4. 180' Wrap to 75' back to make the header as short as possible.
--(this header Uses a 1/D (.625r) bend of 180' then a 75' reverse bend at .850r --
-- and the distance from motor center to after the 75' bend = aprox. 4 1/4" )--
They are all silicone-sleeve mounted headers with .730, .750, & .775 cap i.d.
(only the .730id are listed, the other cap sizes are special order)
If any of you can think of something better, I'd love to hear from you.
! These Custom Drag Car Headers do not include Silicone Tubing
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Macs Products
7935A Carlton Rd.
Sacramento, CA 95826