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So earlier today I spoke with Greg Holman from Racing Engineering Fabrication Unlimited out of Arizona. He fabricated the exhaust on the ultima shown above. He seemed like a really cool guy and was kind enough to spend some time with me over the phone so Im thankful to him for that. For my...

The old engine in the car was a buick v6. Retrofitting the previous headers is not a super viable option imo.

Here is a quick article with a chart calculating rough diameter sizing based on HP. How To Calculate Muffler Size and Exhaust Pipe Diameter - Exhaust Videos | Exhaust Videos My car with its estimated HP of 490 should be running a single exhaust diameter of 3.5"-4" based on the chart. However...

I agree with the logic behind this however the same could be said about the crossover bundle of snakes design. I have never seen a crossover system maintain the same or close to the same diameter exhaust tube. This would lead me to believe there is reason behind a larger exhaust diameter. I...

I can go larger with a 3.5"-4" exhaust if it will shorten the exhaust. The company building it for me will fabricate any straight or transitioned collector and I believe I can also specify either 13° or 20° angles on the collector tubes. Merge Collectors Under best case scenario, what...

So Im about to order materials and the collector, in your post above are you recommending a 3.75" exhaust diameter or were you perhaps referring to the 1.75" primaries? I was planning on running a 3" exhaust pipe. I can go larger but prefer not to if I dont need it.

Jac Mac You are obviously more versed in exhaust design than myself. Why does the tailpipe need to match the 36" primaries? couldn't i theoretically increase diameter and shorten length to maintain the same volume if in fact volume is the reason for the length? My engine is in fact...

I apologize but Im not sure I follow. Can you elaborate on this with a bit more detail?

My initial intuition for collector was 3" With that insight should I go 3.5 or 4" on the collector?

Thanks randy, I agree that a dyno test would be advantageous however it still wont tell me how large the merge size will need to be on the 8 to 1. Also, I won't be going larger than 1-7/8 headers and 1-3/4 seems to fit the current setup better from the limited research I've done along with...

I know it has been a while but I have finally got some time to start working on the montage again. My brother is a pipe fitter and structural fabricator/certified welder in Alaska and he will be in town for a while. I would like to take advantage of his abilities and have him fabricate my...

As far as an update on the car. I took the zf to Lloyd and he flipped it for me. He told me the whole unit looked brand new which is very likely. I built some brackets based on the pantera to soft mount the entire driveline using poly bushings. I also ordered the cable shift kit from cnc...

Sorry its been a little while since my last post. I have been working on the car but not as much as I would have liked. Had a few projects take precedence. Got a question to throw out there. I need to move my seats back further as I am not getting enough leg room. The only option I can see...

Phil, I too plan to run the traditional cross shaft with a slave cylinder. It is actually cheaper for me to run a hydraulic throwout bearing but in the long run I feel the external slave is a better design. I don't know what you mean by open/close measurements, unless you are referring to the...

Phil, I had a kep bellhousing but I am going to swap it out for a quicktime so I can run an 11" clutch. I rebuilt the original 914 TA that came with the car a few months ago. I replaces 2 syncros but after it was all said and done I had minor leaks from the paper thin gaskets. I really think...

Thanks for the info Randy, especially the pilot bushing contact. Every little piece of the puzzle is a relief when found, having never built a car of this nature. I checked out the link for the zf flip a few days ago, I am going to take it to lloyd this summer as there is no one in Vegas that...

Ive been looking everywhere for detailed instructions or a thread on how to do it. I have even pm'd a few members here that seem to know what is going on. If I knew how to do it, I would post it on here, im just not 100% comfortable with the process. I read there is a factory bearing puller...

Thanks randy, the transaxle may move back slightly, no more than one inch from its current location. I don't think it will make a difference.

Well inverting the transaxle makes the whole application come together too nicely not to do. I suppose I'm close enough to RBT to schedule a trip to Disneyland with the wife and kids and just drop it off. The half shaft is in a great location and the rear mounting points on the TA line up...

Here are the pics of my oil pan and the axle shaft. I am really beginning to realize flipping the transaxle is going to be my best solution. If I flip it my the shaft will be almost level as opposed to a 3"+ angle. I will need to raise the bar above my valve covers aprox 2" as shown in the...