Least Expensive Long Tubes?
Safety Car
Joined: Mar 2005
Posts: 4,723
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From: Winnipeg Manitoba, Canada
I'm in the process of buying a new pair from Corvette Kid. He said they dont make them anymore. I was just curious as to if anyone had a set they are using.
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Melting Slicks
Joined: Oct 2006
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From: In a van down by the river! Florida
Large Impressive Member
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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
It is. Hedman doesn't make anything with the correct AIR piping for an LTx engine. The guys using them are no doubt mostly using the non-emission versions. Problem though, the standard Hedmans don't match up well to the LTx's D-ports, blocking the upper and most important part of it. I've heard that the Elites are oval port though and not round port like the cheap Hedmans. If this is the case, they would likely match up okay to the LTx head.
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Melting Slicks
Joined: Oct 2006
Posts: 2,314
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From: In a van down by the river! Florida
Grrrrr, the more I look the more I don't want to dig in to remove all the AIR stuff, looks like EM is the cheapest with correct AIR fittings.
How the hell can Hooker and Headman and Pacesetter get away with not making LTs for the LTx engines?
How the hell can Hooker and Headman and Pacesetter get away with not making LTs for the LTx engines?
Team Owner
Joined: Jan 2003
Posts: 20,322
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From: Summerland B.C. Canada
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Melting Slicks
Joined: Oct 2006
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From: In a van down by the river! Florida
Race Director
Joined: Nov 2000
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From: stop the fun suckers
I'll be curious to see if anyone does. In my four years here, I've never seen anyone mention having a set of them.
It is. Hedman doesn't make anything with the correct AIR piping for an LTx engine. The guys using them are no doubt mostly using the non-emission versions. Problem though, the standard Hedmans don't match up well to the LTx's D-ports, blocking the upper and most important part of it. I've heard that the Elites are oval port though and not round port like the cheap Hedmans. If this is the case, they would likely match up okay to the LTx head.
It is. Hedman doesn't make anything with the correct AIR piping for an LTx engine. The guys using them are no doubt mostly using the non-emission versions. Problem though, the standard Hedmans don't match up well to the LTx's D-ports, blocking the upper and most important part of it. I've heard that the Elites are oval port though and not round port like the cheap Hedmans. If this is the case, they would likely match up okay to the LTx head.
LT4/LT1 both end ports... 1 7/16 x 1 9/16
Middle Port.....................1 9/16 x 2 1/2
(see post info here:http://forums.corvetteforum.com/show....php?t=1618075
and the el-cheapo L98 headers are 1-5/8" how can they block the flow?!?!? I'm thinking about getting the 150.00 painted set of headers for an L98 (headmans) and installing on my stroker LT1.. but dont want anything to be blocked.. so I'm curious as to how this happens?
does anyone have L98 headers on an LT1 already that can chime in?
Le Mans Master
Joined: Jun 2006
Posts: 5,642
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From: One day you're a Comet...the next day you're dust... Arkansas
2) Apparently there is less improvement on the LT cars
3) If it were sufficiently profitable they would do it
Melting Slicks
Joined: May 1999
Posts: 2,037
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From: Sarasota FL
Has anyone measured the Hedman Elites lately? I've posted many times about the Elites that I got that were 1.4" wide or less with no room to grind them out. My exhaust ports were wider, but my heads have been mildly ported. So, if someone buys them or has them sitting around, let's get some current measurements on the stock ports and the Elite openings.
Burning Brakes
Joined: Jun 2006
Posts: 1,096
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From: Baltimore MD
Has anyone measured the Hedman Elites lately? I've posted many times about the Elites that I got that were 1.4" wide or less with no room to grind them out. My exhaust ports were wider, but my heads have been mildly ported. So, if someone buys them or has them sitting around, let's get some current measurements on the stock ports and the Elite openings.
New and untouched, my Hedman Elites measured 1.22" Wide X 1.55" High at their widest points. I was able to safely "blend" the ports to better match (at least not block) my new Summit 170 "D" head ports, which measured 1.35" x 1.30".
I ended up at 1.40" X 1.60" on the headers, which was enough for my particular application. I could have went slightly larger, but it was un-needed for my setup. I didn't NEED any height added to header ports, but after a mild clean up, that was final measurement.
Hope this helps.
Last edited by rel3rd; Mar 29, 2007 at 09:03 PM.
Melting Slicks
Joined: May 1999
Posts: 2,037
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From: Sarasota FL
Sounds about like the Elites I got. 1.22" is too narrow. I'm pretty sure stock heads are bigger than that. It amazes me that Hedman went through the trouble of making rectangular ports, but did not make them the right size. Their cheap headers are a nice 1.5X"round, which will fit over almost anything. I asked their tech support about the small size, and they offered no answer. They did say if I ground on the headers at all, the warranty was voided.
Melting Slicks
Joined: Feb 2003
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From: Construction Sucks! MI
Cruise-In V Veteran
St. Jude Contributor '03 & '05
LT1 and L98 headers are interchangable as far as how they fit to the heads. Of course air fittings are excluded. Brackets for alternators/compressor are going to have to be changed on any header except TPIS, i think. And collector connections differ to from straight pipe to flanged, etc.
I have LT1 EM headers on my L98. I did have to replace the starter, but that thing was a monster anyways. The driver side comes very close to the slave cylinder on my 4+3 so I made a "heat shield" for it.
depending on the years, some cars have 2 o2 sensors and some have one. the headers i got had provisions for 2, i plugged the driver's side on mine and rerouted the wiring to the passenger side since it had more clearance. i had to add a power source for the heated connection anyways so it was a big deal.
I have LT1 EM headers on my L98. I did have to replace the starter, but that thing was a monster anyways. The driver side comes very close to the slave cylinder on my 4+3 so I made a "heat shield" for it.
depending on the years, some cars have 2 o2 sensors and some have one. the headers i got had provisions for 2, i plugged the driver's side on mine and rerouted the wiring to the passenger side since it had more clearance. i had to add a power source for the heated connection anyways so it was a big deal.