Re: 1 7/8 vs 2" Headers
[Re: DusterKid]
#2326844
06/26/17 10:52 AM
06/26/17 10:52 AM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Need more info.. what will it be used for.. but with that small and that low the 1 7/8 would be fine
|
|
|
Re: 1 7/8 vs 2" Headers
[Re: MR_P_BODY]
#2326864
06/26/17 11:18 AM
06/26/17 11:18 AM
|
Joined: Jan 2005
Posts: 1,772 Keymar, MD
DusterKid
OP
top fuel
|
OP
top fuel
Joined: Jan 2005
Posts: 1,772
Keymar, MD
|
Car is a Duster, 440 .030 over 10.5:1, .590 solid cam, 440 source heads, Victor 440 intake, 750 carb (will be going bigger in the future), 727 w/5000 stall conv, Dana 60 4.56 gears. Has been 10.7's. I had Hooker 1 7/8 fender-well headers on the car but disliked that I was limited on front tire size. I took the inner fender-wells out, put the bar from the cage to the front of the frame to tie it all together, but in doing so the way I ran the bars I am unable to run the fender-well headers unless I customize them. So I bought a set of TTI 2" headers. Car really didn't pickup or lose anything in 60', ET or mph wise. TTI fit nicely, but are a HUGE pain to work on. I have another car that I have 1 7/8 TTI's on that I will be changing from BB to SB and thought about putting them on the car to make it easier to work on, or maybe try and modify the fender-wells headers I have to make them fit.
|
|
|
Re: 1 7/8 vs 2" Headers
[Re: DusterKid]
#2326951
06/26/17 01:50 PM
06/26/17 01:50 PM
|
Joined: May 2015
Posts: 1,134 Lost in Time
Iowan
super stock
|
super stock
Joined: May 2015
Posts: 1,134
Lost in Time
|
I'd say that if you can use the 1 7/8" go for it because the 2" can be a pain. I have always used the 2" Hedman slip fits and even those are are not fun.
Have a great day Iowan
"obsolete is neat"
|
|
|
Re: 1 7/8 vs 2" Headers
[Re: cudaman1969]
#2328074
06/28/17 02:21 PM
06/28/17 02:21 PM
|
Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
|
I ain't a drag racer but do you have any thoughts on what (other) system/part might be holding you back/need improvement/changeing/altering?is traction good. is 60ft time good. there used to be some DC charts on matching ET/MPH to weight etc (iirc) to see if there was an issue.
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: 1 7/8 vs 2" Headers
[Re: DusterKid]
#2328115
06/28/17 04:03 PM
06/28/17 04:03 PM
|
Joined: Jan 2003
Posts: 14,498 So. Burlington, Vt.
fast68plymouth
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 14,498
So. Burlington, Vt.
|
For that combo, imo, if you're only turning it 6300, you're not revving it high enough for the 2" to be of any real benefit.
The 1 7/8" Hooker fenderwells make big tq numbers, in part because they're so long........so you def would have taken a little step backwards in the lower part of the power curve by using 2" TTi's instead. May not matter with 5000 stall though.
If you're primarily running 1/8 mile, then it would be even harder to exploit and possible gains from the 2" headers.
Not what you asked...... But...... The cr seems a bit low for a 270@.050 cam. Not sure it would be worthwhile to swap it, just saying it wouldn't have been my first choice, especially for the modest rpm you're turning.
What are the performance numbers out if the car?
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
|
|
|
Re: 1 7/8 vs 2" Headers
[Re: DusterKid]
#2328207
06/28/17 07:46 PM
06/28/17 07:46 PM
|
Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
|
header primary tube length is a seperate area, involves pressure wave tuning, reversion, all that scientific stuff.
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: 1 7/8 vs 2" Headers
[Re: DusterKid]
#2328407
06/29/17 01:30 AM
06/29/17 01:30 AM
|
Joined: Aug 2003
Posts: 43,175 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,175
Bend,OR USA
|
Last edited by Cab_Burge; 06/29/17 01:33 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: 1 7/8 vs 2" Headers
[Re: DusterKid]
#2328414
06/29/17 01:42 AM
06/29/17 01:42 AM
|
Joined: May 2011
Posts: 625 Oakville, Wa
HOTMOPR
mopar
|
mopar
Joined: May 2011
Posts: 625
Oakville, Wa
|
My guess is its gonna like that bigger carb.
67 Barracuda, 470" B, Glide, FuelTech FT600, Precision, Ptc, QA1, Calvert, Smith racecraft, Afco, Dana 60. 275 radials
|
|
|
|
|