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shorty headers vs full length headers

Posted By: roe

shorty headers vs full length headers - 11/18/10 11:10 PM

is there any advantage to running shorty headers over full lengthheaders? seems to me that the concensus is that torque and HP are better with full length. is just a space issue that makes some run with the shorties? edumacate me

roe
Posted By: RapidRobert

Re: shorty headers vs full length headers - 11/19/10 12:48 AM

Quote:

is just a space issue that makes some run with the shorties?

To the best of my knowledge yes. More performance than iron ex manifolds (even HP's) but as you stated not as beneficial a full length ones but less fitment probs (assuming your choice will clear the steering box ).
Posted By: 1Fast340

Re: shorty headers vs full length headers - 11/19/10 06:05 PM

Quote:

Quote:

is just a space issue that makes some run with the shorties?

To the best of my knowledge yes. More performance than iron ex manifolds (even HP's) but as you stated not as beneficial a full length ones but less fitment probs (assuming your choice will clear the steering box ).


and dont dump right at the steering centerlink wich could be another thing with shortys
long headers makes more torque compared to short headers, full lenght headers will most of the time make more hp aswell mostly due to the fact that they are usualy better sized
Posted By: can.al

Re: shorty headers vs full length headers - 11/19/10 08:54 PM

..i have seen tests were there was not much difference on a mild build.
Posted By: 1_WILD_RT

Re: shorty headers vs full length headers - 11/19/10 10:17 PM

Full length headers will offer more performance than shorties.... Till the first time you bottom out & hammer the lower header tubes......
Posted By: 1Fast340

Re: shorty headers vs full length headers - 11/19/10 10:20 PM

Quote:

Full length headers will offer more performance than shorties.... Till the first time you bottom out & hammer the lower header tubes......


last bit is not a problem if you either spend the litle extra that means you wont have that problem and will be able to keep your headers for a much longer time meaning you save money or just build your own,not all that hard if you just have the tools and alitle time at hand
Posted By: chall_70

Re: shorty headers vs full length headers - 11/20/10 07:11 AM

Go with full length. You will always wonder how much more power you could have had. Especially if you take it to the strip.
Posted By: 360view

Re: shorty headers vs full length headers - 11/20/10 12:22 PM

educational articles

overview

http://www.carcraft.com/techarticles/header_basics/index.html

Tri-Y as an option

http://www.popularhotrodding.com/tech/0310phr_jack_burns_exhaust_manifold_header_tech/index.html

Software to compare header size effects

http://www.maxracesoftware.com/pipemax36xp2.htm

good set of tests of different style headers on same engine and dyno:

http://www.circletrack.com/enginetech/ctrp_0806_exhaust_header_dyno_test/index.html
Posted By: reflections7

Re: shorty headers vs full length headers - 11/20/10 09:55 PM

My opinion is if your looking for that last tiny bit then full length but better fitting and flow much better than manifold I went with shorties big block ebody.
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