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I was just wondering if anyone here has any experience with the Hooker Supr competition header Sidepipes on a 1978 corvette, I am interested in getting these but i dont know how they would install and perform, If anyone has any exerience with them leave me some advice on them
I installed mine on my '78 last winter. I used the STS baffles and they sound great! The fit was alright with my angled plugs and I only had to hammer one tube to clear my rack'n'pinion. As for the side pipes, they fit perfectly (had to cut the provided bolts/brackets so that they didn't hit the rocker panels). I might even weld those brackets this winter since these pipes are staying on for ever.
I bought the black painted ones and the paint chipped right off near the heads after a few miles. I heard the chromes are just as bad... so I suggest you go with the new stainless steel ones or repaint/jet-hot a black set.
i have hooker header sidepipes on my 70- sound great, even better though when i remove the baffles from the sidepipes, mine are chrome and are showing their age- i'd pay the xtra and go stainless.
I have Chrome Hooker sidemount headers on my 78.They fit like a glove no cutting or banging to get them in and as far as the chrome goes the people that say it will not last must not look after it .I dont have any problems with the chrome just clean it after you drive the car.
Has anyone had to make adjustments to headers that have been Jet Hotted? Would it pretty much ruin the headers? I want to order directly from Jet Hot, but all this talk about having to 'adjust' makes me nervous.
Although Hooker supposedly has a good reputation, I hope you guys are aware that they are restrictive. For a small block, the header port is smaller than the stock small block exhaust port size. On top of that, weld build-up protrudes into the flow area. A call to Hooker customer service revealed that the weld protrusion is supposed to be removed during manufacture but that is apparently not happening. As for port size, confirmed that it is smaller than the head port. I bought a pair and when I discovered that, I returned them. Funny how they don't advertize that. So now I'm looking for custom headers.
Although Hooker supposedly has a good reputation, I hope you guys are aware that they are restrictive. For a small block, the header port is smaller than the stock small block exhaust port size. On top of that, weld build-up protrudes into the flow area. A call to Hooker customer service revealed that the weld protrusion is supposed to be removed during manufacture but that is apparently not happening. As for port size, confirmed that it is smaller than the head port. I bought a pair and when I discovered that, I returned them. Funny how they don't advertize that. So now I'm looking for custom headers.
Can't be any more restrictive than the 2-1-2 that many of us are replacing. Besides, you sure can't beat the look!
Has anyone had to make adjustments to headers that have been Jet Hotted? Would it pretty much ruin the headers? I want to order directly from Jet Hot, but all this talk about having to 'adjust' makes me nervous.
If you don't get the stainless pipes I'd definately fit them first and then send it to JetHot for coating.... some C3s require some fitting, some don't...
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Originally Posted by 75 Hot One
Although Hooker supposedly has a good reputation, I hope you guys are aware that they are restrictive. For a small block, the header port is smaller than the stock small block exhaust port size. On top of that, weld build-up protrudes into the flow area. A call to Hooker customer service revealed that the weld protrusion is supposed to be removed during manufacture but that is apparently not happening. As for port size, confirmed that it is smaller than the head port. I bought a pair and when I discovered that, I returned them. Funny how they don't advertize that. So now I'm looking for custom headers.
WHich headers did you get ? The Hooker Comps or the Super Comps. Mine are the Super Comps and have a 1 3/4 in. primary pipe and which is big enough for my Victor Jr. heads exhaust port, which is considerably bigger than a stock exhaust port.. The sidepipes are even bigger at 1 7/8 in.
I dont know what 75 Hot One is saying I have over 400hp in my vette with Hooker Sidemount Headers and my car runs fine with no problem.I guess some people think they know it all before they realy try it.If hooker sidemount headers was such a problem then why do so many vettes have them ?
i have hooker header sidepipes on my 70- sound great, even better though when i remove the baffles from the sidepipes, mine are chrome and are showing their age- i'd pay the xtra and go stainless.
do what i did, send your hookers and sidepipes to jethot and they'll strip the chrome off and then jethot em in the sterling finish. it's a lot cheaper than buying a new set and they'll look like new and last u a long time. call jethot and get a price and they'll even send u out the boxes to ship em in, i didn't know that at the time and it took me 2 wks to find boxes that big. i did that 8 yrs ago and they still look like new inside and out. i just took em apart the summer of 04 to install the STS baffles and was amazed at how well preserved the coating was.
WHich headers did you get ? The Hooker Comps or the Super Comps. Mine are the Super Comps and have a 1 3/4 in. primary pipe and which is big enough for my Victor Jr. heads exhaust port, which is considerably bigger than a stock exhaust port.. The sidepipes are even bigger at 1 7/8 in.
Mine were Super Comp with 1 3/4" primaries. The measured port size on the headers was 1 5/16" wide by 1 5/8" high. A stock small block head has 1 1/2" square ports which is also the size of the standard exhaust gaskets. The vertical size is good but the lateral size is too small. So even for stock heads, the Super Comps are restrictive. Ideally, the port size in the header should be slightly larger than the port size in the head so there's a step on the downstream side of the gasket.
I dont know what 75 Hot One is saying I have over 400hp in my vette with Hooker Sidemount Headers and my car runs fine with no problem.I guess some people think they know it all before they realy try it.If hooker sidemount headers was such a problem then why do so many vettes have them ?
What I'm saying is that the Super Comps restrict exhaust flow due to the header port size being smaller than the head port size- see my reply to Motorhead. I suspect that most people don't bother to measure the header port size to see if it matches up to the head port. As for the engine running well, I'm sure it'll run well with the smaller port size but it could restrict power depending on other factors in the exhaust system. My old engine with Blackjack headers with 1 5/8" primaries ran great. I'm just at the point where I'm trying to match the various components with a view to maximizing power.
I dont know what 75 Hot One is saying I have over 400hp in my vette with Hooker Sidemount Headers and my car runs fine with no problem.I guess some people think they know it all before they realy try it.If hooker sidemount headers was such a problem then why do so many vettes have them ?
Maybe because they look SO I was thinking about getting don't care about port size but I don't want the car too loud and what about burning the legs getting in & out of a hot vette. A friend has a 66 & removed the mufflers & left the side covers because he said he burned his legs & so did his wife.
I picked these chrome sidepipes up for free from this guy my dad knows. There not the greatest and don't look brand new up clos but they still look excellent from further away. I also noticed a huge improvement in power. My old headers were way to restricted. This are like a 1/2 inch bigger My old ones were also beat on to fit becuase my road race oil panhad clearance issues and we had to beat it half way in. Know I have no heat problems either.
If you don't get the stainless pipes I'd definately fit them first and then send it to JetHot for coating.... some C3s require some fitting, some don't...
So in theory, I could just buy a set of the (cheaper than chrome) black painted pipes, fit 'em , then send them off to Jet Hot, right?
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Originally Posted by 75 Hot One
Mine were Super Comp with 1 3/4" primaries. The measured port size on the headers was 1 5/16" wide by 1 5/8" high. A stock small block head has 1 1/2" square ports which is also the size of the standard exhaust gaskets. The vertical size is good but the lateral size is too small. So even for stock heads, the Super Comps are restrictive. Ideally, the port size in the header should be slightly larger than the port size in the head so there's a step on the downstream side of the gasket.
When I built my motor I left nothing to chance and I know I put a Felpro #1405 Square Large Race Port Size: 1.55'' x 1.55 up against these headers and it looked OK. I am pulling the engine next week and will do this check again and post pics