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Am I the only one from the rust belt to have an engine die at a stop light in the winter from carburetor ice due to having removed the exhaust manifolds in favor of headers? The factory engineers had a lot to think about. Another thing is headers plus a low restriction exhaust system frequently resulted in a too lean A/F ratio in some parts of the curve, which resulted in a lot of us learning how to change jets
 
I REALLY like my original mopar stock exhaust manifolds - they cost more than the headers on my other mopar but , did I mention it's a max wedge , oh well, anyhow I actually like both ! I just like Mopars - period !
 
doc332 said:
Am I the only one from the rust belt to have an engine die at a stop light in the winter from carburetor ice due to having removed the exhaust manifolds in favor of headers? The factory engineers had a lot to think about. Another thing is headers plus a low restriction exhaust system frequently resulted in a too lean A/F ratio in some parts of the curve, which resulted in a lot of us learning how to change jets
Click to expand...
That is NOT why I learned to change jets:lol:. Have been using multi carb intakes for over 30 years:drinks:
 
doc332 said:
Am I the only one from the rust belt to have an engine die at a stop light in the winter from carburetor ice due to having removed the exhaust manifolds in favor of headers? The factory engineers had a lot to think about. Another thing is headers plus a low restriction exhaust system frequently resulted in a too lean A/F ratio in some parts of the curve, which resulted in a lot of us learning how to change jets
Click to expand...
Did you have a heat stove on the headers that supplies heat to the carb for cold warm ups? If not, then that can be a problem. Heck, even in south Texas I ran one to help with that with that in the winter time.....and if you don't richen the carb once the headers are installed, then yeah, you will see a lean A/F ratio in most cases.
 
this is stock exhaust manifolds, with fuel injection and led's
 
Get off MY lawn...

FB_IMG_1496721958248.jpg
 
BeepBeepRR said:
Here ya go true Dyno tests headers vs HP exhaust manifolds. Our friend Nick has tested this for you.



If that isn't enough here is a 426 headers vs manifolds.
Click to expand...


That's not really a valid test. Headers and HP manifolds each require different cams for optimal performance. I race in F.A.S.T. which requires using stock manifolds. The cam LSA for them needs to be considerably wider for them.
 
doc332 said:
Am I the only one from the rust belt to have an engine die at a stop light in the winter from carburetor ice due to having removed the exhaust manifolds in favor of headers? The factory engineers had a lot to think about. Another thing is headers plus a low restriction exhaust system frequently resulted in a too lean A/F ratio in some parts of the curve, which resulted in a lot of us learning how to change jets
Click to expand...

I had two 318s with manifolds that loved the cold. And a 440 with headers that hated it. To think that 20 years ago I was driving my Challenger this time of year. That was with a 780 holley on it. Man I miss those days.
 
Put a set of Super Comp Hookers on a 67 Coronet and the fit was great up top but bad down below. The engine compartment really warms up and they are more trouble than they are worth. The engine is 30 over 69 440. The car has always been quick even with 323 rear and posi. Don’t worry about carb heat because I have efi and it’s a real plus on a 440. I plan on returning the stock hipo manifolds so I can have some peace and quiet and bypass the heat issues. For street racing my 4 dr twin turbo Audi S6 V8 will eat most street 440’s but it’not as fun to drive and law enforcement doesn’t notice it like they do a red 2dr ht with some sound to it. I included a photo of the custom fit headers on the 67 Coro. A real trick to fit them.

42BF3F36-638E-43BB-9483-E337B76A7659.jpeg
 
AJ/FormS said:
a disagree is an opinion. You can't argue against it, and you don't need to justify it. It's just an opinion.
It's like God.
My opinion is that He's real. But He has never spoken to me, and I've never seen Him.
Your opinion might be that there is no God, cuz He has never spoken to you, nor have you ever seen it him.
So each of us gives the other a big red X; now what? You can't argue against opinion, and you don't need to justify it.
Yet millions of people, over thousands of years, have slaughtered each other over this very opinion.
Click to expand...
 
70chall440 said:
I do agree with most of this, specifically that a lot of is lost in this communication method. Most if not all of us have been taken out of context or someone has gotten offended by misreading our writings. Then of course this is the occasion word omission such "not" making a sentence come out the reverse of what we intended. In business, I would tell my staff the following "read what you wrote at least twice before hitting the send button". I highly encouraged them to take a break before hitting the send button as well because in our heads we think we wrote one thing when in fact we didn't.

As to the red X thing, I see that a bit differently; it just means someone disagrees with a statement, does not necessarily require an explanation and many times an offered explanation will only serve to further a "debate" when it is not necessarily needed. I understand that it can feel like a punk move, but I will be honest and say that I have done it and had it done to me, but I don't take offense to it.

As to the subject of this thread, I remain a bit confused by it to be honest (which I posted earlier).
Click to expand...
 
I have been a mechanic for over 50 yrs and I do know a lot But I dont know everything, In that situation I ask questions and look for answers. Im and old school racer and back in the old days we used what we had to make our cars go.In todays technology we have many alternatives to use to make power so with that said live and let live and play nice together, someday one of the youngest members may have something to offer that will be something we didn’t know
 
Indeed we have more specialty parts than ever. old school is becoming a thing of the past, hard to beat a computer that is controling an air fuel ratio, no choke needed for cold starts, and it works. 60 years ago it was a bi metal spring!
 
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