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Old 09-24-2014, 04:04 PM
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Default LT1 headers

I have a 1995 lt1 from a firebird, aluminum heads with "D" port exhaust. What headers will work with this combo? I have a set of headers for the elky but not "D" port, regular round ports, will this work on this combo?
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Old 09-25-2014, 03:46 PM
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I hear headman makes a dport header for a gbody.
heres a search
http://www.bing.com/search?q=headman...&pc=ASU2JS

edit:: do the aluminum LT1 heads have angled plugs??
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Old 11-15-2014, 09:01 PM
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I am running regular round ports on an LT1

Look here, this was several mod ago, but it is still alive
http://www.gmtruckcentral.com/articles/lt1swap.html
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Old 12-20-2015, 07:47 AM
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I've got an 83 SS that I installed an LT1 (out of an Impala SS) several years ago. I used the original 305 exhaust manifolds on it and now am thinking about headers.

I was looking at the Hedman 68609 because they seem to have good reports on them as far as fit in an El Camino. However, I don't know if there would be any issues on an LT1 in one. I'm thinking about the passenger side because of where the A/C compressor is and the fact that I had to move the motor mount back a little on that side as well.

Anybody here have headers with an LT1 (low A/C compressor mount version) with this generation of El Camino?
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Last edited by roger1; 12-20-2015 at 07:53 AM.
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Old 12-20-2015, 08:31 AM
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Old 12-20-2015, 08:38 AM
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Quote:
Originally Posted by xlchjoe View Post
I might.

But there is nothing like first-hand experience. Hoping to get some of that here.
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Old 12-20-2015, 10:27 AM
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I have the caprice setup with the low pass side mount compressor..
dang, now I cant remember which ac manifold lines I used?? for the caprice maybe???
I did have to do some creative bending at the compressor lines, low side? was too close to the headers,,
and I used a accumulator from a C60 truck for a different low side outlet..
I changed the accumulator hose end to a 90* fitting too..

I think
if I had it to do over again, id use a custom ac manifold block with 90*s or 45*s off the compressor
and custom 2 piece hoses

I have the hooker long tubes,, 2451? I think??
they hang too low on the driver side, there made to work without the double hump xmember, I guess?
I don't remember any motor mount clearance problems tho..

I have seen a set of hedmans that looked like they would work better for the hose clearance,
the #2 tube goes back first, then down,
the hooker tube goes down first..

don't know the number tho...
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Old 12-20-2015, 11:15 AM
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maybe these?? but there long tubes..
I don't see any thing that says they work with the ac box tho..
http://www.jegs.com/i/Hedman/500/68311/10002/-1
http://www.hedman.com/site/?d=119&dt...start=&limit=5

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Old 12-20-2015, 12:12 PM
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I was thinking mid-length headers because I don't want to cut my ground clearance.
Do you know if those Hedman full-length cut clearance or not?

I was looking at the Hedman 68609 mid-length for that reason.
It looks like the 68600 and 68609 are identical except the 68609 are for D port heads which the LT1 heads are.

I found a few threads on this forum where it was reported that the 68600 fit 5th gen El Caminos well. But, none of those reports were with LT1's with the low A/C compressor.

Last edited by roger1; 12-20-2015 at 12:26 PM.
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Old 12-20-2015, 04:03 PM
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I don't know about hedmans on elky's
they fit well and tuck up good on Camaro's and Vett's, but do hang down just a little..

I couldn't remember if my 95 iron LT1 heads are Dport or not,, or just the alum ones??

i'v never used the short/mid headers,,
you still get all the PITArs except the ground clearance, and less of the power...
I figure if I go to all the trouble, and the price of nice coated headers,, im goin long tube..
I don't think I would do it for shorty's, some of them look worse for changing plugs..
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Old 12-20-2015, 04:10 PM
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I've got Hookers on my Camaro which has the FI heads with 202's Can't recall the part number because they are almost as old as me ha. But I will look for a receipt just the same. Merry Christmas...Al
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Old 12-20-2015, 04:32 PM
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Quote:
Originally Posted by JJLT1 View Post
I don't know about hedmans on elky's
they fit well and tuck up good on Camaro's and Vett's, but do hang down just a little..
I couldn't remember if my 95 iron LT1 heads are Dport or not,, or just the alum ones??
i'v never used the short/mid headers,,
you still get all the PITArs except the ground clearance, and less of the power...
I figure if I go to all the trouble, and the price of nice coated headers,, im goin long tube..
I don't think I would do it for shorty's, some of them look worse for changing plugs..
Yeah, I agree with you about long tubes. But, cutting ground clearance is just something I wont do. Been there done that. I hate worrying about hitting headers on stuff.

Right now I have the stock 305 manifolds that came with the car on it. They have small outlets. You would think the mid-length headers would still be a pretty good improvement over those. I'd go from the present single exhaust to a dual with a X too when I do the headers.

OTOH, I still am quite surprised I turned a 13.93 at 93.4 mph in the quarter with this car and LT1 and street tires.
The engine is bone stock.

I didn't check to see if the iron LT1 heads have D ports or not. Maybe they don't. If that's true than the 68600 would be the choice for the Hedman mid-length.
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Old 12-20-2015, 05:05 PM
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Try This : http://www.classicindustries.com/pro...ts/ed6603.html
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Old 12-20-2015, 05:07 PM
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Quote:
Originally Posted by sandblaster View Post
Don't have an Impala.
Ive seen those on Impalas however. Ugliest headers you ever did see.
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Old 12-20-2015, 05:35 PM
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Any 1-3/4 primary header made for the car will work.
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