Best Headers for a Big Block? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71GMC_3/4T · 09-25-2002, 07:07 PM

I need a new set of headers. Mine have one horked up collector, bent flanges and a lot of rust.
Anybody have good or bad experiences with any on a 402?
Mine is BB, TH400, 2WD on a 3/4 ton.
I'm interested in some ceramic coated ones, but I don't know where to start. Any mail order house suggestions with part numbers that you know to fit are very welcomed. I need to find some that fit without having to dent them. I also noticed my current ones are very close to the lower A-Arm bracket and would like to avoid that on the new ones.
Thanks!

chevy2racr · 09-25-2002, 10:43 PM

I have cheap dyno max headers(not ceramic coated) in my 71 LWB 2WD c-10 with 454 and TH350. went in EASY, didn't even pull the spark plugs, jack the front end up and put it on jack stands and they slide down and tip into place

Zurbo · 09-26-2002, 12:48 AM

I went with the Dynomax 86022 headers for my 402 BB.

They went in real easy and fit perfectly.

Ed @ MotherTruckers hooked me up.

**1970 CST Short Wide** · 09-26-2002, 09:29 AM

What about with AC? Do you use your original brackets? I'm thinking of headers but I want to keep my AC where it is

71GMC_3/4T · 09-26-2002, 10:03 AM

Thanks All!
It looks like I'll be ordering a pair from Ed.
Luckily I don't have A/C any more, so I don't have to worry about that.

09-25-2002, 07:07 PM	#1
71GMC_3/4T Weapons Of Construction Join Date: Apr 2000 Location: Colorado, USA Posts: 1,095	Best Headers for a Big Block? I need a new set of headers. Mine have one horked up collector, bent flanges and a lot of rust. Anybody have good or bad experiences with any on a 402? Mine is BB, TH400, 2WD on a 3/4 ton. I'm interested in some ceramic coated ones, but I don't know where to start. Any mail order house suggestions with part numbers that you know to fit are very welcomed. I need to find some that fit without having to dent them. I also noticed my current ones are very close to the lower A-Arm bracket and would like to avoid that on the new ones. Thanks! __________________ 1971 GMC 2500, 402/TH400 4.10 Daily Driver Lafayette, CO

09-25-2002, 10:43 PM	#2
chevy2racr So Many Ideas, So Little Money Join Date: Sep 2001 Location: Marshalltown, IA Posts: 1,610	I have cheap dyno max headers(not ceramic coated) in my 71 LWB 2WD c-10 with 454 and TH350. went in EASY, didn't even pull the spark plugs, jack the front end up and put it on jack stands and they slide down and tip into place __________________ 72 Blazer 3/4 ton running gear 4.10s NP205/TH350 350 4in lift half doors 71 C10 with 454 99 S-10 5.1L SBC 700R4 09 Malibu Marshalltown, Iowa

09-26-2002, 12:48 AM	#3
Zurbo Registered User Join Date: May 2001 Location: Bel Aire, Kansas, USA Posts: 186	I went with the Dynomax 86022 headers for my 402 BB. They went in real easy and fit perfectly. Ed @ MotherTruckers hooked me up. __________________ Zurbo's Chevy - 1972 Black/White Cheyenne Super. 402 Big Block /THD 400, factory air and tilt. My other Chevy - 1998 Camaro SS

09-26-2002, 09:29 AM	#4
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,168	What about with AC? Do you use your original brackets? I'm thinking of headers but I want to keep my AC where it is __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

09-26-2002, 10:03 AM	#5
71GMC_3/4T Weapons Of Construction Join Date: Apr 2000 Location: Colorado, USA Posts: 1,095	Thanks All! It looks like I'll be ordering a pair from Ed. Luckily I don't have A/C any more, so I don't have to worry about that. __________________ 1971 GMC 2500, 402/TH400 4.10 Daily Driver Lafayette, CO



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