HP loss 1 1/2" Shorty v 1 7/8" Long Tube Headers ?
#1175503
02/09/12 04:05 PM
02/09/12 04:05 PM
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Joined: Jan 2008
Posts: 299 East Brunswick, NJ
finadk
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OP
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Posts: 299
East Brunswick, NJ
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My engine is a 408 Stroker with Edelbrock Aluminum Heads (Out of the box with a bit of clean up work in the ports) 10:1 compression, Cam is a Racer Brown 236/236 @ .050. Edelbrock RPM Air Gap Intake and FAST EZ-EFI. The car is a 56 Dodge Custom Royal Lancer. My best guess is that this combo will be in the 500 HP range. My only option for headers is to use shorty truck headers with 1 1/2" tubes. How much HP am I be leaving on the table by going with these as opposed to 1 7/8" long tube headers? you can see from this pic but the Upper control arm is much closer otthe exhaust port thant it looks.
Scott
1956 Dodge Custom Royal Lancer (408 Stroker, 4 Wheel Disc Brakes, Rack & Pinion, 6 speed)
2002 Dodge Ram 1500 Quad Cab
1976 Corvette
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Re: HP loss 1 1/2" Shorty v 1 7/8" Long Tube Headers ?
[Re: finadk]
#1175504
02/09/12 04:32 PM
02/09/12 04:32 PM
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Joined: Sep 2007
Posts: 576 Escondido, CA
kick_the_reverb
mopar
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mopar
Joined: Sep 2007
Posts: 576
Escondido, CA
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How about this, looks like it might work: http://www.spintechmufflers.com/headers/street-car-headers/dodge/cat_63.htmlExpensive but might be worth it. They have other models at 1 3/4" if you click around. Ran
"Hey mister, something's wrong with your car, it idles roughly" - number one comment I got in Israel when daily driving a 70 Barracuda with a lopey cam.
Currently working on - 1966 Dodge A100 van 318/auto Finally - disc brakes on the front. In the plans - rear disc brakes, B&M 250 blower
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Re: HP loss 1 1/2" Shorty v 1 7/8" Long Tube Headers ?
[Re: kick_the_reverb]
#1175505
02/10/12 01:11 AM
02/10/12 01:11 AM
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Joined: Jan 2008
Posts: 299 East Brunswick, NJ
finadk
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OP
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East Brunswick, NJ
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Thanks, I will look into them but I tried a set of A body Mopar Performance long tube headers and there other inference issues such as hitting the floor and issues around the steering linkage.
Scott
1956 Dodge Custom Royal Lancer (408 Stroker, 4 Wheel Disc Brakes, Rack & Pinion, 6 speed)
2002 Dodge Ram 1500 Quad Cab
1976 Corvette
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Re: HP loss 1 1/2" Shorty v 1 7/8" Long Tube Headers ?
[Re: finadk]
#1175506
02/10/12 08:20 PM
02/10/12 08:20 PM
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Joined: Sep 2007
Posts: 576 Escondido, CA
kick_the_reverb
mopar
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mopar
Joined: Sep 2007
Posts: 576
Escondido, CA
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Did you look at the link I gave you? These are DAKOTA headers. They look totally different than A body headers, so I am not sure why you are telling me about your A body header fitment experience. I looked at the picture you posted of your vehicle and thought that what I suggested would work. Ran
"Hey mister, something's wrong with your car, it idles roughly" - number one comment I got in Israel when daily driving a 70 Barracuda with a lopey cam.
Currently working on - 1966 Dodge A100 van 318/auto Finally - disc brakes on the front. In the plans - rear disc brakes, B&M 250 blower
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Re: HP loss 1 1/2" Shorty v 1 7/8" Long Tube Headers ?
[Re: kick_the_reverb]
#1175507
02/10/12 11:32 PM
02/10/12 11:32 PM
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Joined: Jan 2008
Posts: 299 East Brunswick, NJ
finadk
OP
enthusiast
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OP
enthusiast
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East Brunswick, NJ
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Thank yon Ran, Sorry I was looking at it on a iPhone and missed that they were Dakota headers. Don't know where I got A body from. Looks like you managed to find exactly what I am looking for. Scott
Scott
1956 Dodge Custom Royal Lancer (408 Stroker, 4 Wheel Disc Brakes, Rack & Pinion, 6 speed)
2002 Dodge Ram 1500 Quad Cab
1976 Corvette
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Re: HP loss 1 1/2" Shorty v 1 7/8" Long Tube Headers ?
[Re: finadk]
#1175508
02/12/12 09:10 PM
02/12/12 09:10 PM
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Joined: Jan 2008
Posts: 299 East Brunswick, NJ
finadk
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enthusiast
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OP
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Posts: 299
East Brunswick, NJ
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Het Ran, Thanks again on the lead to the Dakota headers, I got an ebay deal last night for a set of Doug Thorley Tri- Y's for a great price.
Scott
1956 Dodge Custom Royal Lancer (408 Stroker, 4 Wheel Disc Brakes, Rack & Pinion, 6 speed)
2002 Dodge Ram 1500 Quad Cab
1976 Corvette
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Re: HP loss 1 1/2" Shorty v 1 7/8" Long Tube Headers ?
[Re: finadk]
#1175509
02/13/12 07:32 PM
02/13/12 07:32 PM
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Joined: Sep 2007
Posts: 576 Escondido, CA
kick_the_reverb
mopar
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mopar
Joined: Sep 2007
Posts: 576
Escondido, CA
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Good to hear, hope the Tri-Y's work well for you. Anyway, for anyone looking for shelf 1 7/8" headers with a totally different routing then the normal car headers, check out the Spintech (probably cheaper than paying to custom build).
Good luck, Ran
"Hey mister, something's wrong with your car, it idles roughly" - number one comment I got in Israel when daily driving a 70 Barracuda with a lopey cam.
Currently working on - 1966 Dodge A100 van 318/auto Finally - disc brakes on the front. In the plans - rear disc brakes, B&M 250 blower
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Re: HP loss 1 1/2" Shorty v 1 7/8" Long Tube Headers ?
[Re: kick_the_reverb]
#1175510
03/06/12 01:04 AM
03/06/12 01:04 AM
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Joined: Jan 2008
Posts: 299 East Brunswick, NJ
finadk
OP
enthusiast
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OP
enthusiast
Joined: Jan 2008
Posts: 299
East Brunswick, NJ
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The Doug Thorley's were a beautiful piece but did not fit, they ended up hitting the firewall. It looks like the Spintech mid-length Dakota/Durango Headers might do the trick. They are a bit expensive but they include a port plate so the tubes are not squished. Thanks again for the info on them.
Scott
1956 Dodge Custom Royal Lancer (408 Stroker, 4 Wheel Disc Brakes, Rack & Pinion, 6 speed)
2002 Dodge Ram 1500 Quad Cab
1976 Corvette
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