Would These Headers Fit

[Zable49]

I found these headers on ebay. Would they fit on our trucks without "MAJOR" fitting issues. I dont mind small adjustments I just dont want to cut out 3/4 of my truck just to fit them if you know what I mean.

http://www.ebay.com/itm/Small-Block-Chevy-GM-Passenger-Car-Heavy-Duty-Black-Headers-Chevelle-Impala-SBC-/291074432983?pt=Motors_Car_Truck_Parts_Accessories&hash=item43c5635fd7&vxp=mtr

[northern]

Do you have a manual or auto transmission?

[Zable49]

auto (turbo 350)

[72freak]

Use these instead!!! Just about the same flow but you wont be constantly tightening them down, changing out blown gaskets and listening to ticking instead of exhaust sound. On top of all that they will look way better and actually look somewhat correct. I put these on every vehicle I build and I take the headers off of every (driver) vehicle I bring home and install these.

You will periodically hear they wont fit without altering something or they will hit the x-member. This is NOT the case. I have put them on 2x4, 4x4, truck, Blazer, Suburban, 1/2 ton, 3/4 ton and 1 ton. 1960-square body. Never had an issue.

http://www.ecklerstrucks.com/chevy-t...1947-1972.html

[bigmac73]

the first pic looks like a cheap knock off, (no brand at all and see a low on the price),

as for the second post there is nothing performance about a stock manifold set up

[kenn]

72freak, I have a 72 with 350/350 will these fit in place of my stock ones.

[Grumpy old man]

Show me the BIG difference between stock rams horn manifolds and headers ? There is no noticeable gain on a dyno test that's why us OLD GUYS still use them and unless your spending a considerable amount of time over 5,000 rpm they are not worth the hype ! average cfm of stock rams horn is about 750 cfm ,most guys are using 600 cfm carbs on the street anyway ....Now if your slamming more air in by turbo or supercharging you would need more cfm but for the street they work great and look better than cheap headers anyday !


http://



A bigger increase is noted using 21/2 inch exhaust rather than a 2 inch noted here in green what goes in must also go out !


BAZINGA !


http://

[Orange Crate]

X2 on the stock high perf 2 1/2 outlet manifolds. I had a pair above my garage for maybe 15 years, always thinking I would install them. So my 2" exhaust gave up the ghost from winter magnesium chloride and I dug them out and put 2 1/2" all the way back, WOW what a difference. The throttle response is really fun now on my 406. Peoples opinions of "high performance" can vary widely. I want to be able to pull a 10K lb trailer up a mountain pass and some others may want to go over that pass at 150mph. The manifolds I put on were from a Hi Perf 327 I think from the late 60s and it had the alternator mount cast into it, so I had to cut it off, but I put that manifold behind my alternator so you really can't even see it. I am not sure if there was a HiPerf 2 1/2 outlet that didn't have the alternator mount cast in. Maybe someone else can chime in on that issue.

[steves1967]

Technology has come along way from the mid 60's and 70's. Full length headers will out flow a set of manifolds any day of the week, period. Old guy's don't want to embrace new technology I guess. If you're putting headers on a stock exhaust system- sure you wont see much improvement, but replace the entire exhaust system and you'll be miles ahead in power and torque!

[geezer#99]

Hey!!
I resemble that remark! I'm 62.
But, most header systems are built with production in mind and not ultimate flow. Most follow the 'if some is good then bigger is better'.
A well designed header and exhaust system will outflow stock manifolds and pipes for sure but most are not designed that way. Too big of a primary pipe, wrong collector length and size, wrong exhaust pipe size, poor muffler design and placement, poor tail pipe design.
You don't need 1 7/8 primaries or 3 inch collectors or 3 inch pipes with mega sized mufflers.
You need a balanced system. You want to get the exhaust out efficiently while reducing backflow. In that regard stock manifolds and pipes will likely outflow most bling bling header systems out there.
And if you want a little more flow from your iron manifolds, just extrudehone them.
http://extrudehoneafm.com/fuel_air_management.html

[Fitz]

Originally Posted by steves1967

Technology has come along way from the mid 60's and 70's. Full length headers will out flow a set of manifolds any day of the week, period. Old guy's don't want to embrace new technology I guess. If you're putting headers on a stock exhaust system- sure you wont see much improvement, but replace the entire exhaust system and you'll be miles ahead in power and torque!

The Grumpy Old Man's plots speak for themselves. The difference is miniscule.
Your claims for torque, Horsepower and exhaust systems are, well, unsupported by anything other than your keyboard and are just:

[Zable49]

You know its funny, I just asked about a single set of cheap headers and this forum went to header vs manifold grudge match.

[Grumpy old man]

Originally Posted by Fitz

The Grumpy Old Man's plots speak for themselves. The difference is miniscule.
Your claims for torque, Horsepower and exhaust systems are, well, unsupported by anything other than your keyboard and are just:

Plots ? what plots ? Who are you and why would I care ,you have your opinion I posted actual dyno charts . I was only trying to help the op to look at stock rams horn rather than leaky tink tink tink cheap headers and he could save money at the same time . I still dying to understand what plots you think I have ...It seems some guys agree ?

[GASoline71]

Originally Posted by Zable49

You know its funny, I just asked about a single set of cheap headers and this forum went to header vs manifold grudge match.

It always will. The stock manifold low torque guys will always argue with the High RPM Street/strip guys.

One thing I can add... is that a cat shouldn't avoid headers beacuse they "always leak". Nothing could be further from the truth, and headers are not the headaches that many claim they are. The only reason fasteners on headers come loose and exhaust leaks happen is because the were overtorqued to begin with. Once you overtighten fasteners on header flanges and collector flanges and warp them, you might as well pull 'em out and restraighten the flange. I have had many sets of headers on many vehicles that have given many miles of leak free service.

Gary

[72freak]

Originally Posted by kenn

72freak, I have a 72 with 350/350 will these fit in place of my stock ones.

Yes, they will work on a 72.

No, Im not an old guy. I do use headers on race cars. But for drivers...never.

[cdowns]

i dont think those rams horns p[ictured will work for clearance issues with the towers used to mount the engine

[68c10airstream]

I feel compelled to respond. As a ase mechanic of over 30 years i know for a fact is this; first off i will take motor home applications as an example. We would fix a couple a year to never return except the owner thanking us as this lasts. If manifold is warped get it machined flat. DO NOT USE GASKETS, use rtv silicone. what we learned is this; gaskets do work provided that you constantly retighten them because it crushes dowm. Silicone sealer fills in the gaps without needing retorquing. Next application; headers, as long as they are good quality with a thick mounting flange, use them with silicone (oxygen sensor safe silicone for efi apps). Now torch off the 3 bolt collector and tig weld on v band clamps and don't look back. I had the same issues with the 3 bolt collector as the manifold gasket issues. The only thing that lasted on the 3 bolt collector was silicone (provided flanged were not warped too badly yet) and lock nuts and additional lock nuts and this was good for my last year of running. A buddy told me of v band clamps and they make a lot of sense as the turbo crowd uses them

[jmorri34]

Originally Posted by Zable49

I found these headers on ebay. Would they fit on our trucks without "MAJOR" fitting issues. I dont mind small adjustments I just dont want to cut out 3/4 of my truck just to fit them if you know what I mean.

http://www.ebay.com/itm/Small-Block-Chevy-GM-Passenger-Car-Heavy-Duty-Black-Headers-Chevelle-Impala-SBC-/291074432983?pt=Motors_Car_Truck_Parts_Accessories&hash=item43c5635fd7&vxp=mtr

I can tell you from first hand experience those will not work on a 69 without mods to the engine stands and a smidgen off the frame and if the 67-72 frames are the same it wont fit any of them IMO. The pipes for #1 and #2 holes will hit the engine stands because they take a downward route instead of up and over.

[captnblood34]

Harder and harder to dig through the BS these days to find the info you're really looking for. As for the stock manifold...ew. And as the for the power chart...cool. The fella just wants to know if those headers would have fit and its likely he doesn't want it to have those disgusting looking rams horns hugging his block. I'm in the market for headers myself and refuse to run block huggers or stock manifolds myself. Why? Because I'm stupid like that. I'm running CPP's motor mounts with a 350 perched on top in my 69 stepper. I had to beat a set of block huggers with my grandpas baby beater to get them to clear just for the virgin start up! I was told (any) pair of shorty headers would fit... Don't want to go through what so many have in the past, stuck with a pair of headers that don't fit. Anyone running a similar application?

[bigmac73]

well looking at the charts I still see a improvement with headers no matter how miniscule you might think the difference is, I vote for headers

my concern is why is everybody having fitment issue ?? I bought a set of Headmans out of the LMC catalog, had no issues at all bolted right up you just have to make sure you order the correct ones for the setup you have

[bigmac73]

Originally Posted by 68c10airstream

I feel compelled to respond. As a ase mechanic of over 30 years i know for a fact is this; first off i will take motor home applications as an example. We would fix a couple a year to never return except the owner thanking us as this lasts. If manifold is warped get it machined flat. DO NOT USE GASKETS, use rtv silicone. what we learned is this; gaskets do work provided that you constantly retighten them because it crushes dowm. Silicone sealer fills in the gaps without needing retorquing. Next application; headers, as long as they are good quality with a thick mounting flange, use them with silicone (oxygen sensor safe silicone for efi apps). Now torch off the 3 bolt collector and tig weld on v band clamps and don't look back. I had the same issues with the 3 bolt collector as the manifold gasket issues. The only thing that lasted on the 3 bolt collector was silicone (provided flanged were not warped too badly yet) and lock nuts and additional lock nuts and this was good for my last year of running. A buddy told me of v band clamps and they make a lot of sense as the turbo crowd uses them

the new ball and socket flange is the way to go

[steves1967]

You're right on a stock, barely breathing, 100,000 mile engine manifolds are probably better. However, put manifolds on a performance type engine and you'll choke the day lights out of it. To the member with the 406 that ran better with manifolds...I would suspect that his entire combo isn't matched and the manifolds acted as a crutch. 3/4 length headers don't add much flow over manifolds, but put a full length header on the engine and watch it purr!!

[Zable49]

Originally Posted by jmorri34

I can tell you from first hand experience those will not work on a 69 without mods to the engine stands and a smidgen off the frame and if the 67-72 frames are the same it wont fit any of them IMO. The pipes for #1 and #2 holes will hit the engine stands because they take a downward route instead of up and over.

Thank you J.
In general I dont mind doing a little adjustments on the frame and motor mounts.

[jmorri34]

Originally Posted by Zable49

Thank you J.
In general I dont mind doing a little adjustments on the frame and motor mounts.

Your very welcome Sir, anything else I can do to help just let me know!!

[kenn]

Thank you for the responce.
I like the look of the ram horns but I need to increase the flow of my exhaust system.
The only rams I have seen that are larger size are strate and my stock ones have a bend in them and I didn't know if thay would fit without any mods.