[andrewb70]

Originally Posted by b-man

Andrew,

..........

1.) What is the part # for the LS7 cam?

I'm all for running OEM stuff in this engine rather than aftermarket for longevity's sake. LS7 427 cam specs: Duration @ .050 211/230,.593/.588 lift with 1.8:1 rockers, lift will be reduced to .560/.555 with stock LS3 1.7:1 rockers (fine by me).

2.) Exactly what rubber (or urethane?) engine mounts/OEM steel frame mounts do I need to make the Edelbrock (P/N 6701) adapter plates work? Link to adapter plates:http://store.summitracing.com/egnsea...+115&x=23&y=11

I assume I'll need to source some Chevelle pieces here. I've done some searching/reading on a couple of different sites and I see different combinations of wide/narrow/short/tall Chevelle engine mounts and frame mounts mentioned for the A-body swaps. Which direction do I need to go here?

3.) How much ground clearance do the Edelbrock (P/N 65073) LSX swap headers offer? How far do they hang below the frame rail on your car Andrew? Link to headers:http://store.summitracing.com/partdetail.asp?autofilter=1&part=EDL%2D65073&N=700 +4294923429+400065+4294839039+4294918680+429479936 5+115&autoview=sku

4.) Which oil pans will work with the engine in this mounting position, either factory or aftermarket?

I noticed while reading through your thread that you bought an aftermarket pan from Autokraft for your '70. Since buying that pan have you learned anything more about other pan options for the A-body cars?

I am really leaning towards running an un-modified factory pan. I know my car won't have the cornering ability to require anything more than a factory pan. I'd like to retain any additional bottom end reinforcement the thick cast aluminum pan has to offer, even though that added stiffness may be more sales hype than fact. Also trying to keep costs in check here, I really don't want to spend $400-$600 on an aftermarket pan and possibly relocate the oil filter.

The Corvette pan that the LS3 engine comes with is supposed to be fairly compact, but I'm considering the GM factory LH8 pan which is even more compact and supposed to be a good fit for early GM F & A-body LSX conversions (2008 Hummer H3 Alpha pan w/gasket & bolts: P/N 12614821, pickup/screen: P/N 12608593). P/N 19212593 is for the kit that includes the pan, pump pick up, dipstick, hardware, gaskets, and windage tray http://paceperformance.com/index.asp...&ProdID=245308.

I've seen a picture of the LH8 pan in a '64 Lemans with a BRP mounting kit but I'm not sure if the engine is mounted in close to the same location as mine will be. It looks to sit a bit higher with the BRP kit than I want mine to sit, not sure. The engine mounts look tall, and it appears the engine is sitting high to help the accessory drives clear the frame/steering components with minimal cutting/grinding. Link to thread with pics:http://www.pro-touring.com/forum/showthread.php?t=43481 The LH8 pan looks to hang about 1" below the crossmember, not a big issue as I'm assuming the Edelbrock headers will hang about that far below the bottom of the frame rail as well.

Thanks again to you and to everyone else here who have taken the time to help me with their constructive input.

So far it looks like the Edelbrock engine mounting plates and headers will be on order pretty soon, still up in the air on the oil pan and exactly what OEM engine mounts I'll need.

Bart

Bart,

I am sorry for the late response, but let me see if I can tackle some of your questions.

1. No clue. LOL. I got mine from Jeff Schwartz. Give him a call. I think he has a couple of new, take out, LS7 cams sitting around that were taken out of new crate engines. http://www.schwartzperformance.com/

2. Used the exact same parts that I had with the BBC. I have reproduction Chevelle big block frame stands and Energy Suspension, tall/narrow poly mounts.

3. I haven't measured the ground clearance, but the Edelbrock headers tuck up nicely. I can take a measurement if this is critical. I will say that they are the best fitting headers I have ever owned.

4. For me, the only option was the Autokraft pan. From everything that I have read, non of the OEM pans will work the the Edelbrock mounts. I needed to use the Edelbrock mounts because their engineer claimed that their mounts will position my bellhousing in the exact same location as it was with my BBC. This was critical for me since I did not change the transmission. My shifter needed to be in the same location as before. As it turned out, Edelbrock designed the mounts as promised and my shifter is in exactly the same location as before. I asked if I can use the CTSV pan, but the Edelbrock engineer told me I could not and sent me pictures that showed where the pan hit. Believe me, they really wanted an OEM pan to work, but as it stands none do. So with that I got the Autokraft pan because it is the only steel pan that retains the oil filter in the stock location. That was the critical feature for me. I would never use the LH8 pan. It hangs 2 inches below the front crossmember. That just looks hideous.

If you don't mind moving the engine back I have seen swaps that use the 4th gen F-body pans. Keep in mind that moving the engine back can present problems with the heads hitting the firewall if you ever have to swap transmission. When the seal in my hydraulic TOB blew I had to pull the trans. With the engine in the stock location I was able to really tip the transmission down and service it without an issues. I can see if the engine was further back the heads might hit the firewall.

I hope that helps.

Andrew