Header/Ground Clearance

[Fishgutz]

How much clearance can I expect to gain if I switch to a set of TTI’s? Right now there is 3-1/2” between the bottom of the flange the ground.
This is a ‘70 Cuda, 383, 727, QA1 suspension up front. Hedman Elite Series are in it now.
Any advice is greatly appreciated, thanks in advance.

 

[Challenger RTA]

Not much with a low profile tire. Check the ride height. there might be a little difference in the TTI profile but the exhaust is where it is.

 

[Fishgutz]

Thanks RTA, that‘s what I thought also. Just have to be careful about going over parking lot entrances and speed bumps.

 

[Daves69]

............Just have to be careful about going over parking lot entrances and speed bumps.

And if you happen to trailer your car!

 

[moparleo]

You can always contact TTI and ask them if they know the difference in clearance between the headers you have now and theirs.

 

[Fishgutz]

Thanks Moparleo, that’s my next step. I thought one of the members might have a real world answer.

 

[Ricks72Chlgr440]

Thanks Moparleo, that’s my next step. I thought one of the members might have a real world answer.

I am running the TTI 1 7/8" headers on my 440 in 72 Challenger. Plenty of ground clearance. Lots more than the small block I had with headers that went UNDER the steering link!

 

[6PKRTSE]

That is low. I bet those are tall deck 413/426/440 headers on your low deck 383 which would make them sit lower in the chassis. Any standard brand name header for a short deck would bring the collectors up higher.

 

[Fishgutz]

That is low. I bet those are tall deck 413/426/440 headers on your low deck 383 which would make them sit lower in the chassis. Any standard brand name header for a short deck would bring the collectors up higher.

I couldn’t agree more, they hang low. TTI lists the same part# for their 1-3/4” tube headers for both B and RB engines. 1-7/8” tube are different for the respective engines.
Do you know the vertical difference at the exhaust ports between B and RB’s?

 

[HemiCap]

1974 Challenger 440/727 TTI 15” tires and I scrape all the time. I’ll need to go under to measure.

 

[Coupe]

No real muscle on my car, but I swapped out long tube headers for TTI shorties.
Watch the first few minutes of this ...https://youtu.be/r2uteNbz3S0

 

[Fishgutz]

After talking with Sam at TTI yesterday, I’m leaning towards the shorties. Looks like the best option to get a bit more clearance and keep the performance.
Thanks to all for your input, I have gained some very useful info.

 

[HemiCap]

After talking with Sam at TTI yesterday, I’m leaning towards the shorties. Looks like the best option to get a bit more clearance and keep the performance.
Thanks to all for your input, I have gained some very useful info.

Wishes I had done that.

 

[Chryco Psycho]

The real ? is now much extra clearance do you have between the headers & pipes to the frame ?

 

[Fishgutz]

The real ? is now much extra clearance do you have between the headers & pipes to the frame ?

I have about 3/4” to work with. Shorty headers will eliminate the 3” collector and flange, and have a 2-1/2” header adapter pipe in it’s place. Likely get an 1”+ extra clearance. Your thoughts? Thanks.

 

[Drivun]

I went from TTI full length to their shorties and am happy with improved ground clearance. Mine was complicated by the angle of my small block with the tko600 I installed. Started with only 2 1/2 ground clearance at the flange. Your gaining the flange depth plus one header tube.

 

[Fishgutz]

I went from TTI full length to their shorties and am happy with improved ground clearance. Mine was complicated by the angle of my small block with the tko600 I installed. Started with only 2 1/2 ground clearance at the flange. Your gaining the flange depth plus one header tube.

I’m well convinced, shorty‘s are the best way to get more clearance. Just need a couple buckets of cubic $$, and my winter project will get started.

 

[Chryco Psycho]

With better fitting headers That are close to the frame i assume you could gain about 3/4" then

 

[Daves69]

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[Fishgutz]

Sam from TTI emailed these photos to me and said I’ll gain about 2” using the shorty’s. For sure, the best way to gain some clearance and stop scraping on things.