Re: headers for blown 340
[Re: 1Fast340]
#201241
01/22/09 06:13 PM
01/22/09 06:13 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Blower motors dont need a collector, they dont need to draft in a charge. I would look at a 1 7/8" min to 2" tube. If your going to run it with a collector look at a 3 1/2". Length wont matter either on the primaries.... make or buy something that fits 
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Re: headers for blown 340
[Re: 1Fast340]
#201243
01/23/09 03:45 PM
01/23/09 03:45 PM
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Joined: Mar 2006
Posts: 9,847
MI, usa
dvw
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master
Joined: Mar 2006
Posts: 9,847
MI, usa
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My blown 340 runs similar cam specs on 112 LCA(solid not a roller),home ported iron heads,7.5-1,2 750 Carters,2" headers,3"exh. 12PSI with a old worn GMC 6V-71 blower mounted on a prehestoric Wiend single 4 barrel manifold. 4.30 gear,loose converter,slicks 11.05@124 thru mufflers @ 3850 lbs. With a 9" converter and BFG drag radials 11.17@121. I honestly don't think you'll give up a ton with smaller headers. Years ago I ran a milder combo. 214@.050 /467" lift cam, 1 5/8" headers, 3.91 gear,stock 340 coverter, same wieght. It went 11.88@113.Doug
Last edited by dvw; 01/23/09 03:48 PM.
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Re: headers for blown 340
[Re: dvw]
#201244
01/26/09 01:11 PM
01/26/09 01:11 PM
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Joined: Feb 2007
Posts: 2,578
sweden
1Fast340
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OP
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Posts: 2,578
sweden
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Quote:
My blown 340 runs similar cam specs on 112 LCA(solid not a roller),home ported iron heads,7.5-1,2 750 Carters,2" headers,3"exh. 12PSI with a old worn GMC 6V-71 blower mounted on a prehestoric Wiend single 4 barrel manifold. 4.30 gear,loose converter,slicks [Email]11.05@124[/Email] thru mufflers @ 3850 lbs. With a 9" converter and BFG drag radials [Email]11.17@121.[/Email] I honestly don't think you'll give up a ton with smaller headers. Years ago I ran a milder combo. [Email]214@.050[/Email] /467" lift cam, 1 5/8" headers, 3.91 gear,stock 340 coverter, same wieght. It went [Email]11.88@113.[/Email]
Doug
what kind of car was it thinking if you may have any pics of those big headers,just interesting seing how others have solved the problem with spacelimitations?
i have not seen alot of pics at all of bigtube headers for abodys at all actualy..
i kind of like the challange alitle also doing something like this 
i know tigwelding will be best but will it be ok to just migweld since it would save alot of hours of work?
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Re: headers for blown 340
[Re: 1Fast340]
#201247
01/27/09 02:20 PM
01/27/09 02:20 PM
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Anonymous
Unregistered
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Anonymous
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Nice to see that you went with the lysholm compressor  Hope to see some build pics later on! Kommer du till Kjula i sommar kanske ? //Chrippa
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Re: headers for blown 340
#201248
01/27/09 05:10 PM
01/27/09 05:10 PM
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Joined: Feb 2007
Posts: 2,578
sweden
1Fast340
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Quote:
Nice to see that you went with the lysholm compressor
Hope to see some build pics later on!
Kommer du till Kjula i sommar kanske ?
//Chrippa
yepp its a real beuty, the lysholmblower has moved in and lives on my kitchentable (good thing i live alone imagine the look on the face of the girlfriend seing that)
will try to take som pics:) how about your build is it coming along nicely?
of course, i realy need to beat my friends 11.7sec 65 malibu  are you coming there also?
/Micke
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Re: headers for blown 340
[Re: 1Fast340]
#201249
10/09/09 05:24 PM
10/09/09 05:24 PM
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Joined: Feb 2007
Posts: 2,578
sweden
1Fast340
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sweden
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still have not got around to complete anything, yea i know thats useless but sometimes things get in the way of building a car  any reason not to build a 4 into 2 into 1 header? just figuring it may be easier to package? thinking about 1 7/8" into 2 1/4" or 2½" and then 3½" collectors or is it a bad idea? thanks
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Re: headers for blown 340
[Re: 1Fast340]
#201250
10/09/09 07:52 PM
10/09/09 07:52 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
still have not got around to complete anything, yea i know thats useless but sometimes things get in the way of building a car
any reason not to build a 4 into 2 into 1 header?
just figuring it may be easier to package?
thinking about 1 7/8" into 2 1/4" or 2½" and then 3½" collectors or is it a bad idea?
thanks
Sure that'll work.... you just need to get the gasses
out.... quicker the better
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Re: headers for blown 340
[Re: MR_P_BODY]
#201252
10/12/09 05:27 PM
10/12/09 05:27 PM
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Joined: Feb 2007
Posts: 2,578
sweden
1Fast340
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OP
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Posts: 2,578
sweden
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Quote:
Quote:
still have not got around to complete anything, yea i know thats useless but sometimes things get in the way of building a car
any reason not to build a 4 into 2 into 1 header?
just figuring it may be easier to package?
thinking about 1 7/8" into 2 1/4" or 2½" and then 3½" collectors or is it a bad idea?
thanks
Sure that'll work.... you just need to get the gasses
out.... quicker the better
Great! i bet that piece of information just gave me some groundclearance and also alot less headache building headers
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Re: headers for blown 340
[Re: ProSport]
#201253
10/12/09 05:29 PM
10/12/09 05:29 PM
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Joined: Feb 2007
Posts: 2,578
sweden
1Fast340
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Posts: 2,578
sweden
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Quote:
Quote:
yepp its a real beuty, the lysholmblower has moved in and lives on my kitchentable (good thing i live alone imagine the look on the face of the girlfriend seing that)
Pics? 
GF or blower ? 
sure can take a pic or two if i could just figure out where i put the camera last time i had alitle party
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