73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Performance => Topic started by: DENNY383SWB on January 22, 2009, 08:53:32 pm
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hey guys, great info here i have to start bythankin everyone for the invaluable info here! i hae a 83 swb its been dropped 5/6" and im in the process of installing a 505hp 383 thats been built with all forged internals, hyd/flat cam, rhs pro topline alum heads with a performance products rpm style intake and a 3" exhaust w h pipe & flowmaster delta 40. this truck will see regular trips to the strip but is intended as a nasty street truck. im lookin to see if anyone out there is using any long tube headers with a simular drop as me?ive been told that i could lose as much as 50hp from goin away from 1 3/4 long tubes to 1. 5/8 shorties both with 3" collectors? whats anyones opinion of this? if anyone's using longs what brand are they and how low below the frame do thy hang? i have a set of hedman elite longs on my 77 motorhome 454 and thte hang down considerably. anyhoo i understand that with any mod there are trade offs and im not too pickey im just looking for a long tube with the most ground clearance??? :-\ anyone seen these dougs headers pn d310 1 5/8 longs on jegs or summit?any info or opinions will be greatly apreciated.
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im not lowered 5/6 but 3/4.
with my 3/4 and long tubes i scrape sometimes but only when its a bad bump or dip.
probably be a bit too close with a 5/6
look around in the forum.
from what u have id say find a set of 3/4 length chevelle Headers.
think ive seen em listed with 1 3/4 primary's.
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I have them on my big block and it scraped a few times going fast hitting hard bumps. After I got a few road rashes on them I had them recoated so they sorta self clearanced themselves ;D
Here's what I have
http://store.summitracing.com/partdetail.asp?autofilter=1&part=HOK%2D2826%2D1HKR&N=700+4294925073+4294908171+4294840133+4294908134+4294918680+4294776433+4294880275+115&autoview=sku
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I have a 6/7 drop and I am running the long tube headman headers. I haven't had any problems they have rubbed twice and that was pulling off the asphalt into a field for a car show.
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None of the longtubes I have ever used that were for a SBC 73-87 truck worked. They all pointed to the ground when installed. I stopped running SBC's so I don't have any info on longtubes, but you may try a Camaro set or Chevelle.
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thanks guys, i think i'd rather lose ground clearance before hp so im goin with a set of long tubes, i'll run em until i smash em then im gettin a set made ;D