Doug's headers feature heavy wall construction with 3/8"-thick mounting flanges, ensuring durability and longevity under the most demanding circumstances. All the necessary mounting hardware is included with each set: bolts, gaskets and reducers.
DHD305C - 265-400 SB with AC, PB, PS, MT floor shift
1-5/8" tubes, 3" collector, oval port
Application notes: 5, 36, 92, 93, 96
DHOD330 - 265-400 with AC, PB, PS, AT
1-3/4" tubes, 3" collector, SAP
Application notes: 92, 205, 209
DHOD318 - 396-502 with AC, PB, PS, AT
2" tubes, 3-1/2" collector, SAP
Application notes: 210
DHOD336 - 265-400 SB with AC, PB, PS, AT/MT floor shift
1 3/4" tubes, 3" collector, oval port
Application notes: 17, 36, 93, 96, 214
DHD370Y - 265-400 SB with AC, PB, PS, AT/MT
1 5/8" tubes, 3" collector, oval port
Application notes: 17, 36, 93, 96, 126, 133
Application footnotes:
5. Shorty design for maximum ground clearance
17. Fits most angle plug heads
36. Fits D-Port heads including ZZ4 crate engines
92. Will fit most angle plug heads including factory Chevrolet Bowtie heads
93. Requires removal or modification of locking steering columns if equipped
96. Installation requires use of 79 or later AC compressor bracket and short compressor
126. Tri-Y Design
133. Does not fit with Powerglide transmission
205. Will fit 168-tooth flywheel is used with Powermaster mini-starter# 9500/OPGI# CH26244
209. One tube each side over frame
210. Must use stock small-block frame stands and motor mounts
214. Must use non-shell type motor mounts
3
This product is not legal for street use on an emissions-controlled vehicle. It may be used on dedicated competition or pre-pollution-controlled vehicles only.
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WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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