Fastest pass thru the mufflers
#1
Fastest pass thru the mufflers
Just wondering who or what exhaust set-up has the fastest timeslip?
Either motor or nitrous pass (not turbo or super-charged- they can cheat with their exhaust, lol)
The exhaust set-up has to be over the axle with and thru the mufflers.
I have a 400sbc with hedman 1 5/8 shorties with single 4" exhaust over the axle thru a flowmaster muffler. My best pass was 11.89 @ 111.
I am sure there are faster 3rd gens than mine .
Post up your timeslip and exhaust set-up!
Either motor or nitrous pass (not turbo or super-charged- they can cheat with their exhaust, lol)
The exhaust set-up has to be over the axle with and thru the mufflers.
I have a 400sbc with hedman 1 5/8 shorties with single 4" exhaust over the axle thru a flowmaster muffler. My best pass was 11.89 @ 111.
I am sure there are faster 3rd gens than mine .
Post up your timeslip and exhaust set-up!
#3
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Re: Fastest pass thru the mufflers
87_TA went 10.41 at 131 all motor and 9.88 at 142 with a 175 shot I believe but that was on a slightly different setup. No new times with the current motor that runs 10.4's all motor.
Think he has hooker longtubes, custom Y pipe or mufflex Y pipe and a 4" single over the axle dumped. No muffler at the track Sounds amazing and its brutally fast.
I've been 10.63 at 127 with a 383 on a small 150 shot. Single 4" exhaust, hooker longtubes, custom ypipe, Dynomax ultraflo round muffler, and dual tips out the back. FULL exhaust.
Think he has hooker longtubes, custom Y pipe or mufflex Y pipe and a 4" single over the axle dumped. No muffler at the track Sounds amazing and its brutally fast.
I've been 10.63 at 127 with a 383 on a small 150 shot. Single 4" exhaust, hooker longtubes, custom ypipe, Dynomax ultraflo round muffler, and dual tips out the back. FULL exhaust.
#5
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Re: Fastest pass thru the mufflers
Yep 2210's.
Ground clearance was minimal with the y pipe going under the subframe. I scraped alot and actually ovaled the tubing from bottoming out.
I hugged the crossmember as tight as i could and even had the pipes touching the frame but 3" is just too much pipe to clear.
driver cross over clears well when you run thru the crossmember
Ground clearance was minimal with the y pipe going under the subframe. I scraped alot and actually ovaled the tubing from bottoming out.
I hugged the crossmember as tight as i could and even had the pipes touching the frame but 3" is just too much pipe to clear.
driver cross over clears well when you run thru the crossmember
#7
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Car: 1985 Pontiac Trans-Am
Engine: AFR 235,Dart 400 Procharger F2. EFI
Transmission: Coan 400 + Gearvendors
Axle/Gears: racecraft 9"
Re: Fastest pass thru the mufflers
I am a procharger guy now, but just two seasons ago when I ran spray, car ran 9.95 @134 with a 383 and 250 shot. With hooker 2210 3" duals bent to single 4" mandrel over axle (mufflex).
Last edited by Maria8; 10-20-2011 at 12:15 PM. Reason: weo
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#8
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Car: 84 firebird, 85 transam
Engine: 350 SBC Or 7.07 Tonys,305stock
Transmission: Big Ugly, 700r4
Axle/Gears: 4th gen rear disk 3.42 lsd,9 bolt
Re: Fastest pass thru the mufflers
Have to love the 4 inch lol drags on everything
Hooker super comps
4 inch out the back
Flowmaster 50 series
11.6 on street tires
Hooker super comps
4 inch out the back
Flowmaster 50 series
11.6 on street tires
#9
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Car: 1985 Pontiac Trans-Am
Engine: AFR 235,Dart 400 Procharger F2. EFI
Transmission: Coan 400 + Gearvendors
Axle/Gears: racecraft 9"
Re: Fastest pass thru the mufflers
I actually do like the 4" over the axle. Sure it is tight in spots but it works great. I re did the front in mandred 3" and went 8.98 @ 157 with my blower. I think that is good for a full exhaust. I will post some pics soon.
#10
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Re: Fastest pass thru the mufflers
I always thought you had plenty of clearance with 4", even going over the axle. I ran a 6" case round muffler in the I pipe region next to the rear end pumpkin and cleared fine and my car is LOW. The ypipe is the problem with longtubes unless you cut the frame up or have a T56/manual with a custom xmember.
#12
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Re: Fastest pass thru the mufflers
I dont have pics, but you cut around the subframe around the transmission tunnel/crossmember and box it up. Basically make a notch so you can run the pipes thru there. Some guys make new rails to gain more clearance. If you search for it, you should find pics of setups using cut frames.
#13
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Not quite as quick as you. Don't have the time slip scanned, but my best is a 12.03 @ 112.6 MPH with the '82 Berlinetta LS1/4L60E. Hawks 1-3/4 x 2.5" long tube headers, custom 2.5" Y-pipe to 3" cat-back, Magnaflow single in/out 3" muffler in the stock location.
Don't have much for pics, this is the custom Y-pipe:
I know the car is an ugly cuss, hope to do something about that soon.
FWIW, I've been driving it to work.
Don't have much for pics, this is the custom Y-pipe:
I know the car is an ugly cuss, hope to do something about that soon.
FWIW, I've been driving it to work.
#15
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Fastest pass thru the mufflers
Old combo went 11.50s at 120 ish with a stock chip, slipping trans, street tires and had to lift outa the gas to get trans to upshift..
Last edited by TTOP350; 11-19-2011 at 04:14 PM.
#16
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Car: 1985 IROC Z
Engine: 385
Transmission: T56 Hawks stage 2
Axle/Gears: 4.10
Re: Fastest pass thru the mufflers
Just wondering who or what exhaust set-up has the fastest timeslip?
Either motor or nitrous pass (not turbo or super-charged- they can cheat with their exhaust, lol)
The exhaust set-up has to be over the axle with and thru the mufflers.
I have a 400sbc with hedman 1 5/8 shorties with single 4" exhaust over the axle thru a flowmaster muffler. My best pass was 11.89 @ 111.
I am sure there are faster 3rd gens than mine .
Post up your timeslip and exhaust set-up!
Either motor or nitrous pass (not turbo or super-charged- they can cheat with their exhaust, lol)
The exhaust set-up has to be over the axle with and thru the mufflers.
I have a 400sbc with hedman 1 5/8 shorties with single 4" exhaust over the axle thru a flowmaster muffler. My best pass was 11.89 @ 111.
I am sure there are faster 3rd gens than mine .
Post up your timeslip and exhaust set-up!
#18
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Car: 00 SSEi / 94 C4
Engine: 231 / 383
Transmission: 4T65E / ZF 6sp
Axle/Gears: 2.93 / Dana 44 3:45
Re: Fastest pass thru the mufflers
my lil 358. shorties T5 ran 113. 1.8 launching from 2nd. no slicks
#20
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Car: 00 SSEi / 94 C4
Engine: 231 / 383
Transmission: 4T65E / ZF 6sp
Axle/Gears: 2.93 / Dana 44 3:45
Re: Fastest pass thru the mufflers
1-5/8 Edl 6872 supertrapp cat back.. HSR conv.. the ET was horrible launching from 2nd
the guy I ran against pulled a 1.5 12.7X @ 111
the guy I ran against pulled a 1.5 12.7X @ 111
#21
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Car: '89 IROC-Z
Engine: Canfield 195 headed 358ci
Transmission: TH350, Art Carr 9.5"
Axle/Gears: 3.92 Dana 44
Re: Fastest pass thru the mufflers
Hooker LT's into a 3" Flowmaster American Thunder "catback": 11.50 @ 119
Same setup with a $20 Summit 3" cutout installed in the I-pipe right before the axle = 11.25 @ 121mph.
Those are both motor times. Nitrous times considerably faster...
Same setup with a $20 Summit 3" cutout installed in the I-pipe right before the axle = 11.25 @ 121mph.
Those are both motor times. Nitrous times considerably faster...
#24
Re: Fastest pass thru the mufflers
Any other fast timeslips running through the mufflers?
What exhaust combo do you have?
I think the gerneral consensus is 1 3/4 hooker LT's with a 3" merge pipe with a single 4" to the back.
Anyone have pics of cutting the frame and making better clearance?
What exhaust combo do you have?
I think the gerneral consensus is 1 3/4 hooker LT's with a 3" merge pipe with a single 4" to the back.
Anyone have pics of cutting the frame and making better clearance?
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