Headers recommendation - The 1947 - Present Chevrolet & GMC Truck Message Board Network

NJKelly · 05-29-2018, 11:02 PM

My blazer has a 350 with headers that do not have room for the drive shaft for the front differential. I have considered removing headers and placing the ram manifolds with flowmaster exhaust. The truck will be going 40 miles an hour at most when I drive it at the beach, and I wonder about the best exhaust manifold setup to use. I'd like to reinstall the drive shaft so it does have 4-wheel drive and will consider putting in headers meant for that if there are advantages to them over stock exhaust manifolds. Thanks for your answers.

**A1971Blazer** · 05-30-2018, 07:46 AM

with a stock motor...headers are more trouble than they're worth...good rams horn manifolds will be much less hassle.... just my 2¢.....

NJKelly · 05-30-2018, 08:22 AM

A guy near me has a set on Craigslist for $30. Are they prone to cracking or warping, I wonder if new remanufactured ones will be less trouble.

**A1971Blazer** · 05-30-2018, 09:19 AM

Quote:

Originally Posted by NJKelly

A guy near me has a set on Craigslist for $30. Are they prone to cracking or warping, I wonder if new remanufactured ones will be less trouble.

A good factory set would be best...they aren't prone to warping and cracking but it can happen....usually a visual check will reveal a crack....and a straight edge will verify flatness....a good set of metallic gaskets will seal them very well.....torque them down and after a few hours of running...torque them again and forget them...

NJKelly · 05-30-2018, 12:06 PM

Maybe I'll grab those on Craigslist then, thanks for the help.

**A1971Blazer** · 05-30-2018, 12:10 PM

Quote:

Originally Posted by NJKelly

Maybe I'll grab those on Craigslist then, thanks for the help.

If they're good-----$30 is a decent price

SeventyOne · 05-30-2018, 12:18 PM

Stock manifolds, or the 2.5" corvette manifold are a common upgrade.

And if you REALLY want headers (which I can't blame anyone and I run them as well) I think Sanderson makes really nice quality headers that wont leak if installed correctly.

WAYNE G. · 05-30-2018, 08:50 PM

I have a new set of headers for a blazer that I will not use they are Holley Flow tech 11500FLT that fits. Let me know. Thanks Wayne G.

NJKelly · 05-30-2018, 08:53 PM

What are you asking for them?

simicrintz · 05-30-2018, 09:27 PM

Quote:

Originally Posted by SeventyOne

And if you REALLY want headers (which I can't blame anyone and I run them as well) I think Sanderson makes really nice quality headers that wont leak if installed correctly.

X2 on the Sanderson's. Run them on my Jeepster and they have been on two different engines; never had a leak.

WAYNE G. · 05-30-2018, 10:07 PM

I would use EARLS HEADERS GASKETS have them on my 69 camaro and not one issue

WAYNE G. · 05-30-2018, 10:50 PM

Quote:

Originally Posted by NJKelly

What are you asking for them?

Sent you a pm

NJKelly · 05-31-2018, 11:51 AM

Never got the PM Wayne

Mike C · 05-31-2018, 08:36 PM

Driveshaft interference suggests someone put a set of two wheel drive headers on the truck.

IF I was going to run headers again, they would be Heddmans again. Back in the late 80's they were the only ones that would clear the clutch linkage I could find. Got tired of returning crappy ones to Super Shops.

But I went to the 'vette 2 1/2" outlet manifolds on my Jimmy and we are doing the same on my kids Jimmy project. They work great, look great, are low to no maintenance and are cost effective at $120 from Speedway motors. Available other places as well.

WAYNE G. · 05-31-2018, 09:05 PM

Quote:

Originally Posted by NJKelly

What are you asking for them?

I tried to pm again. Total is 125.oo shipped. Let me know if you need them. Thanks Wayne
706-399-4060

NJKelly · 05-31-2018, 11:48 PM

So their Hedmans that are made for a Corvette, do I understand you correctly? Do you have a part number? Thanks

Mike C · 06-04-2018, 10:31 AM

If you are asking me, the part # I used for headers was for a 67-72 4x4 with manual trans. You can get that by calling Summit or Jegs to order.

But on my truck I used the reproduction cast iron Corvette Rams Horns with the larger 2 1/2" diamter outlet. Mine came from Speedway Motors.

Cap'n Hook · 06-08-2018, 06:03 PM

Unless you're making north of 350hp, gains with headers wouldn't be realized. And the extra effort just for the sound of headers isn't worth it, IMO. The headaches of leaking gaskets and fasteners coming loose constantly are another negative.

I'll reiterate the corvette ram horns will flow plenty for a stock-ish Chevy small block, as there are a few flow comparisons over the years by different magazine writers. PLUS, they're relatively cheap, and can be installed in under a six-pack worth of time.

05-29-2018, 11:02 PM	#1
NJKelly Registered User Join Date: Mar 2018 Location: New Jersey Posts: 379	Headers recommendation My blazer has a 350 with headers that do not have room for the drive shaft for the front differential. I have considered removing headers and placing the ram manifolds with flowmaster exhaust. The truck will be going 40 miles an hour at most when I drive it at the beach, and I wonder about the best exhaust manifold setup to use. I'd like to reinstall the drive shaft so it does have 4-wheel drive and will consider putting in headers meant for that if there are advantages to them over stock exhaust manifolds. Thanks for your answers.

05-30-2018, 07:46 AM	#2
A1971Blazer Senior Member Join Date: Nov 2013 Location: East Tennessee Posts: 2,200	Re: Headers recommendation with a stock motor...headers are more trouble than they're worth...good rams horn manifolds will be much less hassle.... just my 2¢..... __________________ 1967 C10 Step side 1968 C10 Step side 1970 Chevrolet K/5 Blazer 1972 Chevrolet K/5 Blazer .............

05-30-2018, 08:22 AM	#3
NJKelly Registered User Join Date: Mar 2018 Location: New Jersey Posts: 379	Re: Headers recommendation A guy near me has a set on Craigslist for $30. Are they prone to cracking or warping, I wonder if new remanufactured ones will be less trouble.

05-30-2018, 12:06 PM	#5
NJKelly Registered User Join Date: Mar 2018 Location: New Jersey Posts: 379	Re: Headers recommendation Maybe I'll grab those on Craigslist then, thanks for the help.

05-30-2018, 12:18 PM	#7
SeventyOne Registered User Join Date: Mar 2007 Location: Oakland, Ca Posts: 1,382	Re: Headers recommendation Stock manifolds, or the 2.5" corvette manifold are a common upgrade. And if you REALLY want headers (which I can't blame anyone and I run them as well) I think Sanderson makes really nice quality headers that wont leak if installed correctly.

05-30-2018, 08:50 PM	#8
WAYNE G. Registered User Join Date: Mar 2007 Location: augusta, ga. Posts: 157	Re: Headers recommendation I have a new set of headers for a blazer that I will not use they are Holley Flow tech 11500FLT that fits. Let me know. Thanks Wayne G.

05-30-2018, 08:53 PM	#9
NJKelly Registered User Join Date: Mar 2018 Location: New Jersey Posts: 379	Re: Headers recommendation What are you asking for them?

05-30-2018, 10:07 PM	#11
WAYNE G. Registered User Join Date: Mar 2007 Location: augusta, ga. Posts: 157	Re: Headers recommendation I would use EARLS HEADERS GASKETS have them on my 69 camaro and not one issue

05-31-2018, 11:51 AM	#13
NJKelly Registered User Join Date: Mar 2018 Location: New Jersey Posts: 379	Re: Headers recommendation Never got the PM Wayne

05-31-2018, 08:36 PM	#14
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,727	Re: Headers recommendation Driveshaft interference suggests someone put a set of two wheel drive headers on the truck. IF I was going to run headers again, they would be Heddmans again. Back in the late 80's they were the only ones that would clear the clutch linkage I could find. Got tired of returning crappy ones to Super Shops. But I went to the 'vette 2 1/2" outlet manifolds on my Jimmy and we are doing the same on my kids Jimmy project. They work great, look great, are low to no maintenance and are cost effective at $120 from Speedway motors. Available other places as well. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

05-31-2018, 11:48 PM	#16
NJKelly Registered User Join Date: Mar 2018 Location: New Jersey Posts: 379	Re: Headers recommendation So their Hedmans that are made for a Corvette, do I understand you correctly? Do you have a part number? Thanks

06-04-2018, 10:31 AM	#17
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,727	Re: Headers recommendation If you are asking me, the part # I used for headers was for a 67-72 4x4 with manual trans. You can get that by calling Summit or Jegs to order. But on my truck I used the reproduction cast iron Corvette Rams Horns with the larger 2 1/2" diamter outlet. Mine came from Speedway Motors. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

06-08-2018, 06:03 PM	#18
Cap'n Hook Workin to live... Join Date: Jun 2003 Location: Texas Hill Country Posts: 261	Re: Headers recommendation Unless you're making north of 350hp, gains with headers wouldn't be realized. And the extra effort just for the sound of headers isn't worth it, IMO. The headaches of leaking gaskets and fasteners coming loose constantly are another negative. I'll reiterate the corvette ram horns will flow plenty for a stock-ish Chevy small block, as there are a few flow comparisons over the years by different magazine writers. PLUS, they're relatively cheap, and can be installed in under a six-pack worth of time. __________________ Jason



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