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I would like to know what are the diameters of tubes for the upper part of the gen 1 intake manifold as well as the lengths of the primary and secondary tubes. If anyone could post up that information it would be greatly appreciated. Thanks, Chris_Murder

I figured I would post this here to see if anyone else had some ideas of what else to possibly look at or try. I've posted about this issue on TCCoA a few times in the past with no success. I'm trying to post as much helpful information I can to help in diagnostics. I'm at the point of trying...

I have a plan to add an oil supply hose for an upcoming modification to where the factory oil level sensor currently is. I have no use for the factory sensor since my mark motor isn't in a mark viii and it isn't hooked up to anything anyway, currently it just plugs the hole. I'd like to replace...

Does anyone think that the pace setter 96-98 long tubes would fit similar to the Mac headers? I'm considering buying a set and cutting up the drivers side to make it work with the steering along with relocating the egr fitting. I found a pair new for $275 shipped. Just wondering if anyone thinks...

Well my thunderbird with my modified gen 1 mark motor blew it's transmission (97 thunderbird transmission, jmod, higher stall tc, roller clutch failure), I have a new transmission ready to go in but it's too new, it needs it's output shaft changed over (which I can do). My question is are there...

I'm not sure how many of you frequent TCCoA.com since the majority of 4.6 tech is SOHC, and their focus is more toward birds and cougars than they imply but I wanted to show you all how far the bird has come. In a way it's Thundermark 2 for some of you. Anyway here is the link along with many...

I'm looking to prolong the life of my IMRC's, I had initially installed a basic small air/water separator in line with the PCV system but this is proving to be insufficient on the 4v. It was fairly successful on my old 2v motor but it's not doing it's job in this application. I've been...

It's been awhile since I last drove a mark VIII, but with my 4v motor swap coming near completion on my tbird I wanted to know what rpm are you N/A guys shifting at WOT and what rpm does it shift at from the factory at WOT? I have a built TC, aftermarket cams, aftermarket beehive valve springs...

What size is the the tubing used on the factory y-pipe from the manifold/manifold cat to the third/y-cat?

Does anyone here have any experience with the MMR remote IAC kit? I'm thinking of investing in it for my gen1 swap. Also any opinions or feed back on their rear main seal/Block support plate kit? My engine is currently out for a complete regasket and I've noticed these modular innovations. Just...

I remember reading something about few early 93 mark viii engines getting some forged internals. I could be mistaken though as i have had a bit to drink this evening. Pardon my ignorance but how would you identify whether or not it did or did not have anything forged in the bottom end? It did...

Could I trouble someone here for an upload of the vac layout on a 93. I'm considering switching to hose candy fittings over my broken plastic parts.

I usually only post in the Mark VIII forum but when I was at SEMA I snapped a picture of this LS. It has a wide body kit and a vortech supercharged 4.6 4v aluminator engine. I thought it was pretty unique. What do you all think?

What size wrench do I need to take those torque converter s.o.b.'s out? A 15mm seems to big, a 14mm seems to small, a 9/16" seems to small. What size are those damn things?

Will a gen 2 tps and wiring work on a gen one throttle body? I've compared the sensors side by side and the look mechanically the same except for the different connectors for the wiring. Is this one of those parts that maintained the same function but changed shape from gen 1 to gen 2 like the...

Anyone know where I can get one or have a non-damaged used one for sale? Mine is ripped. Thanks.

I'm almost done cleaning up my 93 engine for my motorswap, but durring my paperwork for my tune from sct I hit a road block. What is it safe to spin these engines up to? It's a mostly stock 93 long block with new gaskets and seals with aftermarket cams. Thanks all! -Chris_Murder

Is there anyone running around with a tune and an IMRC delete on a N/A first gen? I've heard this two ways....but I'm looking for the truth Here what I've been told from 3 different forums 1: If you delete the IMRC's on an N/A gen 1 or gen 2 it will be a complete dog off the line unless you...

As I've said before I'm in the longer version of the process of swapping a mark VIII motor into my thunderbird. I was tearing apart the top-end of my 93 mark motor yesterday to clean my imrc's but when I took out the fuel injectors all of bank 1's pintle caps broke, and all of bank 2's are...

http://lasvegas.craigslist.org/cto/1578622840.html I only clicked on it at first because my first thought was he must have put an extra 0 on the end.... I thought he meant $1300 not $13,000 and thats when I almost puked.