Well its beel awhile since I've worked on the swap. Had other projects come up (LT1 swap into my truck, house addition, etc). Anyways, I finally got back to it and figured I'd throw a few pieces of info out.
I just dropped the motor in this afternoon. For mounts, I used the Transdapt motor mount adapter plates and used the stock chevy engine side mounts. I positioned the motor by bolting up my transmission and aligning the trans mount in the stock location. I unbolted the stock frame side mounts and dropped the motor in position. The mounts ended up being moved back about 1.25". I still have adequate clearance between the firewall/heater box and the heads. I am using a non a/c heater box. Putting the motor in this place allowed me to run the stock truck PS pulley. It clears the steering box just fine. Now the biggest problem to over come was the oil pan. The stock truck oil pan cleared fine, but hung way too low. Its been mentioned the Moroso LSx pan fits fine, but is quite pricey and requires a remote oil filter setup. I ended up buying the CTS-V oil pan and pickup. Fits perfect. No issues at all. Only 1/2" or so below the crossmember. Now the earlier 78-81 Gbody guys might have a little different front crossmember (so I've been told) and might not have the same clearance. Once I get the trans in (next weekend), I'll snap some pics of the motor sitting in place.
For headers, Scholenfeld headers are junk and do not fit. Do not buy them. With the motor in this location, the stock truck manifolds do not fit. The passenger side clears fine but the drivers side collector hits the frame. There is a new company that can be found on LS1tech that finally made Gbody LSx swap headers. I will be ordering a pair this week. Pricey, but really no choice.
Also, I ran into clearance issues with the #8 coil and heater box. I ended up turing the coil 90* and made a right angle bracket. I bolted it to the #6 coil. Looks clean and clears the heater box now.
Like I said, hope to have more pics next weekend. Once the trans is in (awaiting my Precsion 4000 stall), I can finish up a lot of things.
I just dropped the motor in this afternoon. For mounts, I used the Transdapt motor mount adapter plates and used the stock chevy engine side mounts. I positioned the motor by bolting up my transmission and aligning the trans mount in the stock location. I unbolted the stock frame side mounts and dropped the motor in position. The mounts ended up being moved back about 1.25". I still have adequate clearance between the firewall/heater box and the heads. I am using a non a/c heater box. Putting the motor in this place allowed me to run the stock truck PS pulley. It clears the steering box just fine. Now the biggest problem to over come was the oil pan. The stock truck oil pan cleared fine, but hung way too low. Its been mentioned the Moroso LSx pan fits fine, but is quite pricey and requires a remote oil filter setup. I ended up buying the CTS-V oil pan and pickup. Fits perfect. No issues at all. Only 1/2" or so below the crossmember. Now the earlier 78-81 Gbody guys might have a little different front crossmember (so I've been told) and might not have the same clearance. Once I get the trans in (next weekend), I'll snap some pics of the motor sitting in place.
For headers, Scholenfeld headers are junk and do not fit. Do not buy them. With the motor in this location, the stock truck manifolds do not fit. The passenger side clears fine but the drivers side collector hits the frame. There is a new company that can be found on LS1tech that finally made Gbody LSx swap headers. I will be ordering a pair this week. Pricey, but really no choice.
Also, I ran into clearance issues with the #8 coil and heater box. I ended up turing the coil 90* and made a right angle bracket. I bolted it to the #6 coil. Looks clean and clears the heater box now.
Like I said, hope to have more pics next weekend. Once the trans is in (awaiting my Precsion 4000 stall), I can finish up a lot of things.