250 6 cylinder headers - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Billy G · 06-09-2003, 11:50 PM

Im curious if anyone here has ever put headers on a 250 6 cyl.
It's just a though, but I might do that on my 70 GMC.

I was shopping @ XXXXXtruckers online, and found a Hedman Header claiming to fit this 250.

If you have, what did you do about the stock intake manifold???

I'd greatly appreciate any comments or advise.

Billy G

ZOOMY · 06-10-2003, 01:45 AM

YEARS ago we used to split the exhaust manifold (amongst other things) to get them to breathe a little better. They also sounded great because the power pulses were separated from each other.

stelth2002 · 06-10-2003, 02:32 AM

I have a set of custom headers on mine, thats the only way i could get them to line up with my clutch and stuff. Its still very tight, but everything was planned good and it works like a charm, i have heard good luck with the clifford headers also and they would be cheaper than haveing them made. I love mine and makes a real distinct sound. :>

Canada20 · 06-10-2003, 11:50 AM

Clifford Headers and intakes come up on E-bay from time to time.

www.cliffordperformance.com

Offenhauser used to make custom intakes for the Chev I6 and I think there are a couple of Header companies too like Hedman and Hooker.

Hope this helps!

Greg

Pumkin Truck · 06-10-2003, 01:05 PM

i know at my advance auto parts they sell a dynomax header for my 250. for almost 200$

dubie · 06-10-2003, 02:03 PM

i priced out a set for my inline and it was gonna cost me $695 canadian. It's cheaper to buy them from the USA

But i decided to scrap the inline and went with a 350 instead

Brad · 06-10-2003, 02:23 PM

I'll be putting the Stovebolt headers on my 250 within the next month or so. So far, the only problem I see up front is the poor casting. I'm mating this up with a Clifford intake and I can see that there will be some grinding involved to make them bolt up together. I don't know yet if I'll be able to afford dual exhaust all the way back for now, but will go with 2" when I can.

I guess the reason I went with cast iron headers is because of the reputation of the tube headers wearing out after a couple years. I've also heard of exhaust leak problems with the tube headers.

I figure I can always put the I6 performance stuff on the Camaro if I ever get a V8 for the truck.

PanelDeland · 06-10-2003, 07:26 PM

I want to do the I-6 headers and an intake.Ihave been looking at the 4bbl intake that uses a 390 cfm carb.I have also seen 2 singles intakes at swap meets.Since I haven't ever put one on a 6 let me know how things fit.

Canada20 · 06-10-2003, 07:32 PM

This is may be completely unhelpful but I believe Sanderson makes or made cast iron headers for the I6. I can't remember where I saw that and it's possible that it's my "meds" talking but it might be worth googling....

Greg

06-09-2003, 11:50 PM	#1
Billy G Registered User Join Date: May 2003 Location: Dayton, Tx (in Old River) Posts: 286	250 6 cylinder headers Im curious if anyone here has ever put headers on a 250 6 cyl. It's just a though, but I might do that on my 70 GMC. I was shopping @ XXXXXtruckers online, and found a Hedman Header claiming to fit this 250. If you have, what did you do about the stock intake manifold??? I'd greatly appreciate any comments or advise. Billy G __________________ My FAMOUS LAST WORDS...."Ima Gonna!!" - 1970 GMC 1500 swb/step 250 I-6 3 spd - "The GEM" - 1976 Chev Scotsdale swb/step 350/350 - "The JEWEL" - 1982 Chev C-10 swb/step 250 I-6 3 spd - - 2001 Chev Silverado LT -

06-10-2003, 01:45 AM	#2
ZOOMY Senior Member Join Date: Feb 2003 Location: WIS Posts: 1,752	exhaust YEARS ago we used to split the exhaust manifold (amongst other things) to get them to breathe a little better. They also sounded great because the power pulses were separated from each other.

06-10-2003, 02:32 AM	#3
stelth2002 Young Gun wth Fast Inline Join Date: Jan 2002 Location: Idaho Posts: 1,475	I have a set of custom headers on mine, thats the only way i could get them to line up with my clutch and stuff. Its still very tight, but everything was planned good and it works like a charm, i have heard good luck with the clifford headers also and they would be cheaper than haveing them made. I love mine and makes a real distinct sound. :> __________________ 1967 Chevrolet LWB with built 292! 415 ft. lbs of torque, 4 speed :O with 27% overdrive too, 3.73 Posi. Frame and body done... getting painted!!!

06-10-2003, 11:50 AM	#4
Canada20 Registered User Join Date: Jun 2001 Location: Calgary, Alberta, Canada Posts: 802	Clifford Headers and intakes come up on E-bay from time to time. www.cliffordperformance.com Offenhauser used to make custom intakes for the Chev I6 and I think there are a couple of Header companies too like Hedman and Hooker. Hope this helps! Greg __________________ No such thing as a stupid question, right?

06-10-2003, 01:05 PM	#5
Pumkin Truck Thats just prime! Join Date: Mar 2002 Location: TEXAS Posts: 720	i know at my advance auto parts they sell a dynomax header for my 250. for almost 200$ __________________ 69 GMC short bed stepside with a wimpy six that can barely pull itself. 99 Chevrolet Camaro Z-28 1 Bad 5.7ltr LS1

06-10-2003, 02:03 PM	#6
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,853	i priced out a set for my inline and it was gonna cost me $695 canadian. It's cheaper to buy them from the USA But i decided to scrap the inline and went with a 350 instead __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

06-10-2003, 02:23 PM	#7
Brad Out of the carpool lane. Join Date: Jan 2000 Location: Clark Co, WA Posts: 5,672	I'll be putting the Stovebolt headers on my 250 within the next month or so. So far, the only problem I see up front is the poor casting. I'm mating this up with a Clifford intake and I can see that there will be some grinding involved to make them bolt up together. I don't know yet if I'll be able to afford dual exhaust all the way back for now, but will go with 2" when I can. I guess the reason I went with cast iron headers is because of the reputation of the tube headers wearing out after a couple years. I've also heard of exhaust leak problems with the tube headers. I figure I can always put the I6 performance stuff on the Camaro if I ever get a V8 for the truck. __________________ 1968 C-10 SWB, 5.7 Vortec/700R4/3.73 posi, Torch Red 1968 Camaro, 250/Powerglide, all original (No, I'm not gonna drop a 350 in it!...Jeez!) 2000 Honda VFR in the faster yellow! 2008 Husqvarna TE-610 1967 C-10 SWB 'Six Appeal'-Gone but not forgotten... Last edited by Brad; 06-10-2003 at 02:28 PM.

06-10-2003, 07:26 PM	#8
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,992	I want to do the I-6 headers and an intake.Ihave been looking at the 4bbl intake that uses a 390 cfm carb.I have also seen 2 singles intakes at swap meets.Since I haven't ever put one on a 6 let me know how things fit. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

06-10-2003, 07:32 PM	#9
Canada20 Registered User Join Date: Jun 2001 Location: Calgary, Alberta, Canada Posts: 802	This is may be completely unhelpful but I believe Sanderson makes or made cast iron headers for the I6. I can't remember where I saw that and it's possible that it's my "meds" talking but it might be worth googling.... Greg __________________ No such thing as a stupid question, right?

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