What's the fastest shorty header/single exhaust car?
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Re: What's the fastest shorty header/single exhaust car?
i ran a 11.72 with dyno dons headers into a 3 inch exhaust with a 3 inch cutout. I know I can get down into the 11.50's with this setup. How fast are you wanting to go?
__________________ 383 Forged Stroker. Splayed 2 bolt mains, TPIS Miniram, ZZ409, Probuilt 700r4, Dart 200cc Alum Heads, 3500 Stall, 12 bolt 3.90, Dyno Dons Headers and Y, Spohn suspension, relocated battery, 3 inch cutout, custom 4 inch custom airbox by 1bad91z ,3 core radiator, stage 2 stewart water pump.
working on cervinis cowl hood, 11.72 at 115.90 with 1.53 60ft
Re: What's the fastest shorty header/single exhaust car?
low 12's on mine, at somewhere near 4,000 feet altitude (idaho). flowtech shorty headers, into two 2 1/2 into a single 3 1/2 through a hooker aerochamber.
__________________ "Wide open 'till you see GOD, then brake!!"
'91 Camaro RS B4C Police Special Service Package
350 4-bolt, 10:0 w/moly rings, Holley Stealth Ram (ported), BBK 58mm, MSD ignition, Procomp heads 2.02 1.60 200cc (63hrs. port work), 30# venom injectors, Flowtech headers, full custom 3.5" mandrell ceramic exhaust w/ aerochamber, Comp cam XFI280HR (.576/.571 234/244), PCMforLESS.com tune, 58mm BBK, Custom TPI air lid, Custom RamAir, 1.6 stainless steel rollers, Custom 700-r4 2500 stall, Aluminum Drive line, 3.23 posi, Moser axles w/stud girdle cover, Spring works springs (lowered), UMI relocation brackets, panhard, LCAs, sub-frame connector, boxed A-arms, Poly bushings, Custom interior, Powdercoated & polished IROC wheels, Custom "Black Cherry" Paint", 4pt. roll bar, +++ more! "It's not the tires squealing, it the asphault SCREAMING!!"
Re: What's the fastest shorty header/single exhaust car?
"I am building a solid roller 406 w/ AFR heads. Power should be around 560-570 according to AFR.
I hope to run mid low 11's."
I don't see anything holding you back. Dyno Don's short tube headers will not hold you back. In fact with that much power you will be getting very close to the 10's if not a 10.99.
Re: What's the fastest shorty header/single exhaust car?
Quote:
Originally Posted by 1989GTATransAm
"I am building a solid roller 406 w/ AFR heads. Power should be around 560-570 according to AFR.
I hope to run mid low 11's."
I don't see anything holding you back. Dyno Don's short tube headers will not hold you back. In fact with that much power you will be getting very close to the 10's if not a 10.99.
I hope to get to that. I wonder how many passes the 7.5 rear will take.
I am planning on taking off the flowmaster and put a magnaflow muff instead. The magnaflow is suppose to flow way better.
Re: What's the fastest shorty header/single exhaust car?
hooker maxflow's are the best flowing, the second is the aerochamber.....I'll try to find the muffler flow bench testing sheet and post it back on here.
__________________ "Wide open 'till you see GOD, then brake!!"
'91 Camaro RS B4C Police Special Service Package
350 4-bolt, 10:0 w/moly rings, Holley Stealth Ram (ported), BBK 58mm, MSD ignition, Procomp heads 2.02 1.60 200cc (63hrs. port work), 30# venom injectors, Flowtech headers, full custom 3.5" mandrell ceramic exhaust w/ aerochamber, Comp cam XFI280HR (.576/.571 234/244), PCMforLESS.com tune, 58mm BBK, Custom TPI air lid, Custom RamAir, 1.6 stainless steel rollers, Custom 700-r4 2500 stall, Aluminum Drive line, 3.23 posi, Moser axles w/stud girdle cover, Spring works springs (lowered), UMI relocation brackets, panhard, LCAs, sub-frame connector, boxed A-arms, Poly bushings, Custom interior, Powdercoated & polished IROC wheels, Custom "Black Cherry" Paint", 4pt. roll bar, +++ more! "It's not the tires squealing, it the asphault SCREAMING!!"
Re: What's the fastest shorty header/single exhaust car?
I think you will have that 10 bolt crying uncle in short order. The saving grace is you are running an automatic trans. I think any of the straight through muffler designs such as DynoMax and Magnaflow will get the job done. The bigger the diameter the more CFM.
Re: What's the fastest shorty header/single exhaust car?
I run MAC 1-5/8" shorties/3" flowmaster pipe with a single 3" in/out Magnaflow welded. Car ran 12.6@114MPH. It's getting longtubes and larger exhasut soon though.
Re: What's the fastest shorty header/single exhaust car?
There is a thread on the LS1tech board that people have picked up 30RWHP going from the 4inch flowmaster dual outlet to a straight 4in muffler like the magnaflow. That's a bunch.
__________________ Wide Open Till You See GOD ...Then Brake
If You Are Upside Down And on Fire....Its To Fast
Working on the 00' Hawk now. H/C/I/E/bottle.
Still dreaming of the solid roller 406 for the 89'
Re: What's the fastest shorty header/single exhaust car?
A little of topic but since the subject of 10 Bolt strength was mentioned you might consider one of the LPW Ultimate covers. Adds allot of strength with the bearing cap studs and heavy cover. Here's a link to their site. http://www.lpwracing.com/p_capcovers.asp and here's one for their axle tube brace kits http://www.lpwracing.com/p_axletubebrace.asp
__________________ New Custom Ralley Red paint , Custom Black racing stripes ,Open-air 14 by 3in. Spectre Element & Spectre X - Stream filter top /Goodmark Steel Cowl Hood /3in. American Thunder Flowmaster Cat Back / Magnaflow Cat /Corvette servo upgrade/ Extra manually switched Front Fan with 180 Thermostat / Derale Engine oil -Trans. combo Cooler ,235/60R15 Cooper Cobra GT Tires in front on 7in. American Racing AR-23 Wheels, 295/50R15 Hankook H101 Tires in rear on 8in. AR-23 Wheels,28 spline Eaton Posi, 28 spline axles & gear ratio changes to 3.42 with L.P.W. Ultimate 10 Bolt cover.
Last edited by ronusmcmma; 01-07-2010 at 09:47 PM.
Reason: add info.
Re: What's the fastest shorty header/single exhaust car?
Does it count if there's a turbo in the mix too? I was using what's in my sig., 1 5/8" shortie headers. I had a 5" cutout after the turbo, but a single 3" pipe with the cutout capped. It still dynoed over 520rwhp with 8psi and the 3" pipe and ran at least a low 10.
Its not what you buy its what you build 
"It's not the tires squealing, it the asphault SCREAMING!!" 
In fact with that much power you will be getting very close to the 10's if not a 10.99. 
A little of topic but since the subject of 10 Bolt strength was mentioned you might consider one of the LPW Ultimate covers. Adds allot of strength with the bearing cap studs and heavy cover. Here's a link to their site. 
