02blkss

I would recommend the tanks inc tank also. I used a ricks tank (which is really nice just pricey) on my LY6/4L80E swap, as the tanks inc. tank was not available. As far as the cross member I used the stock one. I may have cut the mount off and turned it around and welded it back on. I also had the stock drive shaft shortened but my car had a TH400 to start with.

I am using these guages http://www.classicinstruments.com/UserFiles/Image/Classic%2070-72%20Chevelles.jpg I used the truck radiator hose on the top and a stock hose on the bottom with my stock BB radiator. I also used ford windstar electric fans.

I swapped the box because it gives better road feel and is not over powered like the stock unit. I thought I would just mention it so that if you plan to do both you dont have to deal with converting standard fittings to metric to bolt up the lines. Not the prettiest install but it is functional. My AC compressor would not clear unless the motor was slid way forward and then I think you will hit the pan. The alternator clears the hood fine. I would like to change the accessories to clean up the top of the motor but my goal was to get it running first. I started with this.

I just completed the swap of a LY6 and 4L80E in my 72. Need to do some tuning still as I swaped to a LS3 intake and injectors from a Camaro and my off idle fueling is a little off. I used swaptech multi position mounts from nookandtranny. I could have slid the motor farther back but was able to use my stock cross member and minimize the notching of my frame for the A/C compressor. I went with a holley pan and have plenty of room I also used Fbody headers (pacesetters) and they fit really well. The drivers side collector exits at a angle but it actually gave me more room for the o2 sensor and transmission linkage on that side. I swapped in a steering box from a Grand Cherokee and was able to bend the truck power steering lines and bolt them up. I used a harness from PSI as the only LY6/4L80E combo that I am aware of was in 2007 and 2008 vans. I got tired of looking and got a LY6 from a 2008 truck that had a 6L80E which uses a different TCM which the new harness simplified. I needed a lot of little things like a brake switch to get the TCC to unlock correctly and adapters to make my guages work the way I wanted and countless other things. The stock 2.73 posi is going to have to go one of these days but I wanted to see what it was like since the 4L80E has the same ratios as the stock TH400. I still think it was a cheaper way to go than rebuilding the 402/TH400 that was in the car the way I would have wanted. You also just can't beat fuel injection from a driveabilty and mileage standpoint. Let me know if you have any questions and I will try to help.