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VHT has held up awesome for me. Nine years and no issues.

I installed the Jegs kit recently. The kit is designed to connect directly to their headers, so, as stated, they will not go all the way up to your manifolds. You need head pipes for that. I got mine from TTI. It all came together fairly well.

Alpha13.. I'm sure you are right with your explanation in regards to the pipe size argument. But In my ignorance, it just goes against my limited concept of how this stuff works! I always heard that, to make more power, let the engine "breathe" better. Usually this is done in the first stages...

I'm callin BS! Don't get me wrong here alpha13, your argument is well worded and all, but it doesn't make sense to me. I'm no expert on the topic, lol, but this goes against common sense. BTW, yes, there IS something as back pressure. And to illustrate my point, try running your manifolds thru...

^^ I think this may be the correct answer. Have you done a mock up to see how the manifolds will sit against the heads? When installed, I think maybe the holes you are concerned with will be blocked off by the head. Then all you need to do is put a plug in the end of the manifolds.

Did you not get the instructions? I think you need to make a couple modifications to the assembly. You can go to their website to see diagrams of these instructions: 1. The bellcrank and the pivot shaft must be shortened by 3/4”. 2. Weld the bellcrank back together as shown. 3. Re-bend the...

I wasn't aware of any issues in regards to the clearance to the manifolds on a 340. More info please...

..Sounds sweet dude. Thanks for posting up the video. But who is that crusty ol fart roaming around in your garage?

This is what you're looking for: http://www.ttiexhaust.com/Category-ClassicExhaust/MFDback.htm H pipe or x pipe, from the HP manifolds all the way to the rear bumper

I looked at the Dougs thru the link above, Bruce, but nowhere does it say they are ceramic coated, or anything coated for that matter. It does say that they are polished though. And only a 3 month warrantee? Is that the norm for decent headers?

Hmmm, I agree. But I don't think that will cause too much of a problem with what I'm going for.

Bruce, thanks man! This helps a bunch. It's looking more like it will work out just fine. So if I order this stuff up and it doesn't fit, it's your fault.

Bruce, the head pipes (from TTI) stop in the same location as the headers (also from TTI) But what I want to do is mix n match... I don't know if things will line up if I use TTI head pipes, and then run the JEGS exhaust kit. Beer makes everything better

Alright you clowns, you're mucking up my thread! So let me reiterate a little... I would like to combine my TTI head pipes (which are connected to HP manifolds) with the Jegs exhaust kit. (Jegs sells their kit for $250... The Similar kit from TTI is close to $700) Understandably, if the...

I've been wondering if this would be a fairly straight forward approach to a budget exhaust system for my project: ('70 Dart, LA360), HP manifolds, TTI headpipes, Jegs 2 1/2" exhaust kit with welded mufflers. Now I'm fairly certain that the Jegs kit won't directly connect to my TTI head pipes...

I think there have been several write ups about the $250 Jegs 2 1/2" mandrel bent, aluminized exhaust kit, with welded mufflers included. The consensus seems to be that people are satisfied or very happy with the kit. I think this is the same kit RaniDart purchased recently. I'm hoping to get...

I bought the exhaust pipes (head pipes) from TTI, and I'm going to try the Jegs complete exhaust system. I have the 340 manifolds as well. Jegs complete mandrel bent 2 1/2" system with mufflers is like $250

Be sure and use the correct LocTite high temp thread sealer on those studs that go into the water jacket

Sounds to me like you're just bragging Bruce. Lol, wish I could have been so lucky.

I'm thinking you should go with a set of the HP manifolds (or headers) in order to take advantage of those big valves

Interesting, thanks for the replies

I DONT want to have to spend the time or risk breaking off a stud! BTDT! It was enough of a pita even while the engine was on a stand.

These are the HP 340 manifolds with the 2 1/4" outlets. They're going on my new LA 360.. They aren't warped, as far as I know, but they look pretty beefy enough to handle a resurfacing. The machinist is a highly regarded engine builder / race car owner and builder. I'm confident he won't do...

My mechanic wants to machine my manifolds FLAT so that they can be installed with no gaskets. I've never heard of doing this, have any of you done it, with success? He says this is the best way of assuring no problems down the road.

Keep soakin em. Also a 'heat-up' with a torch, then squelch with a 50/50 mix of ATF and acetone. Then when the time comes to remove the bolts, be patient. Your first direction should be to TIGHTEN (clockwise) the bolts, ever so slightly. Then, carefully begin counter clockwise rotation, and...

X3

Very possibly those were the ones, thanks. Any opinions on how they sound? Tom, what are the mufflers in your avatar? I recall months ago you were working on a muffler concept...

A buddy of mine told me about a set of mufflers that he used to have, and I was curious if anyone here has ever seen or heard of them. They are turbo style and, under heavy acceleration, there is some sort of bypass that allows straight thru exhaust path. I never heard them, but he said they...

Found 'em! Apparently TTI calls them "exhaust pipes" not down pipes or head pipes Here they are, 2 1/2" mandrel bent $188 per set: http://www.ttiexhaust.com/Category-ClassicExhaust/ComponentParts.htm#ep

Anybody care to help me out with a part number or something? I have done an "exhaustive" search here and on the web. It appears that Summit doesn't carry them, even tho I read here in a search that they did at one time (TTI) My car is a 70 Dart with an LA block (360) and I have the proper HP...