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Smiley wrote:Good to hear it ! Sanderson headers fill a void between V8 Monza cast manifolds and long tube headers. I had Monza manifolds (2" outlet size) but they didn't work when I switched to Vortex heads.
Sandersons have a 2 1/2" outlet like the old Corvette ram's horn Hi-Po manifolds, they are half the price of 2129's.
For a street car(driver or show car) with mufflers the ease of install and added ground clearance of Sandersons outweigh the headaches and cost of long tube 2129's for maximum power.
T-FATTY wrote:I had them on my 72 vega, great fit and plenty of ground clearance. Copper gaskets for leak free install.
BadBowtie wrote:Glad to hear the sandersons work so well, I am a bit biased since I have a set of Don Hardy longtubes. A lack of traction or free time to go to the track has had me wondering if they are worth the ground clearance loss at times.
For all our cars we've been using Percy's Seal-4-Good Header Gaskets for a few years now and have had leak free/multiple installations on the same gaskets without any problems too.
Smiley wrote:Header tests using 440 hp 383 small block: http://www.superchevy.com/how-to/148-04 ... -shootout/
1.5" short tubes made 435 hp & 461 tq
1 ¾-inch Long Tubes 449 hp & 467 tq
"the long-tube designs made more upper-end torque and horsepower than the small-tube pieces, but they also lost power in the midrange relative to where their peak power was made.
As for the smallest of the headers tested, we meant to provide a baseline number but instead netted the best overall power curve for a street/strip vehicle. We feel comfortable concluding that the shortest and smallest tube design held true to our initial theories by promoting as much upper-end horsepower as possible with a short tube while building an impressive amount of torque with a small diameter."
so you can make 435 hp with 1.5" shorties
and 14 hp more with 1.75" long tubes.
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