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2" TTI vs other headers ground clearance #2458936
02/28/18 04:10 PM
02/28/18 04:10 PM
Joined: Jul 2003
Posts: 1,205
Canton, Ohio
Crazy68Dart Offline OP
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Crazy68Dart  Offline OP
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Canton, Ohio
Hey everyone, been a long time since I posted.

On my dart, I currently have 2" TTIs (vintage 12 or so years ago when I bought them) on a low deck. I'm not thrilled with the ground clearance, they hang down, and don't look all the nice.

You can ask why I have these headers on the engine I am currently am running, and I totally agree, they are overkill. At the time, I didn't want to buy parts twice, and was planning a stroker build (and still am..... someday....).

Anyway, I'm trying to determine for any of you that have went from 2" TTIs to possibly the 1 7/8" TTIs on a low deck, how much the ground clearance improved? The 2" I know were designed for the RB, but I'm not actually sure how different they are as I've never seen them side by side.

Otherwise, thinking about a set of Shumacher's or maybe something different. The Dart has AlterKtion, so I don't have as many clearance issues to deal with.

Thanks!


383, Hemi 4-Speed, AlterKtion, D60
Re: 2" TTI vs other headers ground clearance [Re: Crazy68Dart] #2459116
02/28/18 10:54 PM
02/28/18 10:54 PM
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Posts: 3,027
Arlington, Texas
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bobby66 Offline
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Do you have RB headers on a low deck engine?


B
Re: 2" TTI vs other headers ground clearance [Re: Crazy68Dart] #2459148
02/28/18 11:41 PM
02/28/18 11:41 PM
Joined: Dec 2004
Posts: 9,436
Rittman Ohio
fourgearsavoy Offline
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Rittman Ohio
There was a set of Doug's D451's on the return table at Summit the other day for $300 with 25% off that. Some guys have used 1 7/8" B-body tubes on A-bodies with small dings shruggy

Gus beer


64 Plymouth Savoy
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Re: 2" TTI vs other headers ground clearance [Re: fourgearsavoy] #2459207
03/01/18 01:13 AM
03/01/18 01:13 AM
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Posts: 1,205
Canton, Ohio
Crazy68Dart Offline OP
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Canton, Ohio
Bobby, if the two inch ttis are considered RB headers then yes, I am. That is part of what I want to confirm. They hang low.

Gus, thanks. I'm not familiar with those headers, they low deck specific? I'll look them up. Maybe I'll run up to summit over lunch tomorrow. They are probably gone but who knows.


383, Hemi 4-Speed, AlterKtion, D60
Re: 2" TTI vs other headers ground clearance [Re: Crazy68Dart] #2459338
03/01/18 12:19 PM
03/01/18 12:19 PM
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Arlington, Texas
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bobby66 Offline
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On the TTI site they say a low deck engine must use a raised exhaust port head to run the 2" headers.


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Re: 2" TTI vs other headers ground clearance [Re: bobby66] #2459348
03/01/18 12:33 PM
03/01/18 12:33 PM
Joined: Jul 2003
Posts: 1,205
Canton, Ohio
Crazy68Dart Offline OP
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Crazy68Dart  Offline OP
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Canton, Ohio
Yeah, I saw that note too. I *think* that was mainly for clearance issues around the block, etc. I had to grind my block and slightly ding the header on the pass side. Otherwise, no issues, other than they hang lower than I want.

How much higher are raised exhaust port heads than standard? I'm sure it would help some with overall ground clearance, but I wonder how much...


383, Hemi 4-Speed, AlterKtion, D60
Re: 2" TTI vs other headers ground clearance [Re: Crazy68Dart] #2459401
03/01/18 02:33 PM
03/01/18 02:33 PM
Joined: Jan 2003
Posts: 13,080
So Near, Yet So Far
topside Offline
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I have a 440-based Duster, Indy heads, with those headers. No problem with ground clearance; Milodon pan is lower than headers. Car sits stock height if not a bit lower. They do interfere at pitman arm.

Re: 2" TTI vs other headers ground clearance [Re: Crazy68Dart] #2459413
03/01/18 02:43 PM
03/01/18 02:43 PM
Joined: Aug 2008
Posts: 18
Ohio
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wedgg440 Offline
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If you go to the TTI catalog you will learn that when using a low deck block in an A-body you will need to use Indy SR heads on your build.The Indy SR heads have 3/4"raised exhaust ports and will raise your headers that amount.I built a 1970 Duster with that setup about 5 years ago and it fit perfectly with good ground clearance.

Re: 2" TTI vs other headers ground clearance [Re: wedgg440] #2459434
03/01/18 03:44 PM
03/01/18 03:44 PM
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Posts: 1,205
Canton, Ohio
Crazy68Dart Offline OP
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3/4" of an inch up would still not make me happy.

I'll try to get a pic of the headers and how low they are hanging and post. They are definately lower than the oil pan (rear sump 6 quart Mopar pan to clear rack on AlterKtion).


383, Hemi 4-Speed, AlterKtion, D60
Re: 2" TTI vs other headers ground clearance [Re: Crazy68Dart] #2459442
03/01/18 03:55 PM
03/01/18 03:55 PM
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Posts: 3,027
Arlington, Texas
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bobby66 Offline
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I've run their 1-3/4" headers on 400 and 440 engines and had plenty of ground clearance. Easy to work around, too.


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Re: 2" TTI vs other headers ground clearance [Re: fourgearsavoy] #2459782
03/02/18 04:39 AM
03/02/18 04:39 AM
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Posts: 8,457
Mt.Gilead, Ohio
OhioMopar Offline
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Originally Posted By fourgearsavoy
There was a set of Doug's D451's on the return table at Summit the other day for $300 with 25% off that. Some guys have used 1 7/8" B-body tubes on A-bodies with small dings shruggy

Gus beer

I wish Doug's made something bigger than 1 3/4".

Re: 2" TTI vs other headers ground clearance [Re: OhioMopar] #2461217
03/04/18 11:42 PM
03/04/18 11:42 PM
Joined: Jul 2003
Posts: 1,205
Canton, Ohio
Crazy68Dart Offline OP
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Originally Posted By OhioMopar
Originally Posted By fourgearsavoy
There was a set of Doug's D451's on the return table at Summit the other day for $300 with 25% off that. Some guys have used 1 7/8" B-body tubes on A-bodies with small dings shruggy

Gus beer

I wish Doug's made something bigger than 1 3/4".


D452... I think that is a 2" header.

Here is a not so great pic of the headers on my car.

smallheader.jpg

383, Hemi 4-Speed, AlterKtion, D60
Re: 2" TTI vs other headers ground clearance [Re: Crazy68Dart] #2461393
03/05/18 11:25 AM
03/05/18 11:25 AM
Joined: Aug 2003
Posts: 8,457
Mt.Gilead, Ohio
OhioMopar Offline
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Originally Posted By Crazy68Dart
Originally Posted By OhioMopar
Originally Posted By fourgearsavoy
There was a set of Doug's D451's on the return table at Summit the other day for $300 with 25% off that. Some guys have used 1 7/8" B-body tubes on A-bodies with small dings shruggy

Gus beer

I wish Doug's made something bigger than 1 3/4".


D452... I think that is a 2" header.

Here is a not so great pic of the headers on my car.

Oops. I guess I didn't finish my thought. Bigger than 1 3/4 for a low deck.

Re: 2" TTI vs other headers ground clearance [Re: OhioMopar] #2461467
03/05/18 01:53 PM
03/05/18 01:53 PM
Joined: Jul 2003
Posts: 1,205
Canton, Ohio
Crazy68Dart Offline OP
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Crazy68Dart  Offline OP
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Canton, Ohio
Originally Posted By OhioMopar
Originally Posted By Crazy68Dart
Originally Posted By OhioMopar
Originally Posted By fourgearsavoy
There was a set of Doug's D451's on the return table at Summit the other day for $300 with 25% off that. Some guys have used 1 7/8" B-body tubes on A-bodies with small dings shruggy

Gus beer

I wish Doug's made something bigger than 1 3/4".


D452... I think that is a 2" header.

Here is a not so great pic of the headers on my car.

Oops. I guess I didn't finish my thought. Bigger than 1 3/4 for a low deck.


No prob! I should have put that together myself, haha.


383, Hemi 4-Speed, AlterKtion, D60
Re: 2" TTI vs other headers ground clearance [Re: Crazy68Dart] #2461536
03/05/18 04:19 PM
03/05/18 04:19 PM
Joined: Jul 2011
Posts: 869
Chicago
PurpleBeeper Offline
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Chicago
I've never run TTI's at all, but I have run 2" Hookers & 2" Heddmans. The Hookers gave me about 2" more ground clearance vs. Heddman. Hookers had 1 slip tube & all 4 Heddman primaries were slip tubes. Hope this helps at least a little.


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