Joined: Tue Oct 11 2005, 12:30PM
Location: Home of the SuperSpeedWagon
Posts: 49
I have had TTI build an exhaust system based on HP manifolds from a 70 300 w/ TNT motor. The driver's side manifold is 3418351 (IIRC) and that is what I gave to TTI for my order. I haven't installed it yet, but I will let you know when I do and if I run into any problems.
Joined: Sat Mar 29 2008, 03:36PM
Location: North eastern Wis.
Posts: 1638
Ive got this pair here, I might want to sell the pair if they are right for you. Part numbers are (248310-6) driver side (2806900) passenger side. Can anyone say for sure what they are? I know what they came off of, but am not sure if that is where the factory put them.
Joined: Sat Mar 29 2008, 03:36PM
Location: North eastern Wis.
Posts: 1638
Thanx for the info. was it common for these cars to only have one HP manifold or did some one add just one? I dont see the good in just one free flowing manifold. Seems like the motor would be a little unbalanced. Woudl I be better off just using the lo po logs that came on my New Port? Or should I be looking for another drivers side manifold. I realy don't want to deal with headers.The car won't be used for racing just a cruiser and some towing.
Joined: Sat Mar 29 2008, 03:36PM
Location: North eastern Wis.
Posts: 1638
This pair came off a 440 hp out of a 68 newport. I will be installing a 400 into another 68 New Port. What I am wondering is why was the miss match on the donor car to begin with? Was this normal or did someone do some goofy parts swap? How common is the other Hi Po unit and is it hard to find?
If it isn't going to matter, would I be better off putting the origanal logs back in the car?
<span class='smallblacktext'>[ Edited Sun Nov 02 2008, 11:41AM ]</span>
There are usually some left side HP manifolds on Ebay--they pop up every couple of weeks, selling for betwween $40-$100. Don't waste your time with the Low-po Logs if your getting a TTI exhaust system. The HP manifolds flow at least 30% more than the logs and will add a quick 25-30 horsepower with no other mods.