5.3 swap

[66shortwide]

What oil pan is everyone using that is doing the ls swap? My motor doesnt seem to sit as low as I thought it would, but I'm running a Flat Out Engineeering crossmember and the corvette rack is keeping the motor from sitting any lower. Currently I have a truck oil pan mounted.

[jgarverick]

i used the truck pan with home made adapter plates to the stock perches. i've heard a camaro/trans am pan fits and offers more ground clearance. my motor sits about as low as possible using the stock crossmember. i'm sure some other guys will chime in, i think theres a few on here who have done the conversion.

[CWT]

Not for sure about in a truck but I know that swapping into a Gbody folks are using a CTS-V pan. They have more clearance.

[jason65]

TimE is doing that. You might check out his thread.

[TopFuel1966]

My '66 has the stock crossmember with ECE motor mounts and the stock pan fits perfectly.

[TR65]

I am fitting a LS motor right now in my 65. It had the Trailblazer pan and I had to switch to the Silverado pan. I was able to put the crank centerline at the same height as the original 283 I took out. The bottom of the pan sits well below the cross member. It looks like a shorter pan with a longer sump might work as well.

TR

[66shortwide]

tr65 - what was the stock 283s crank height? Can you give me that measurement from frame and not the crossmember?

Also, can anyone give me a measurement to the front of the motor? My truck never had an engine in it, so I'm just putting it in as far back adn as low as possible right now.

[tomlamb]

I am using the stock pan and motor mounts.

[TR65]

66ShortWide

I clamped a straight edge to the bottom of the crossmember at the center. The dimension from the bottom of the crossmember to the centerline of the crank at the front pulley was 11" even.

The face of the block was 1" forward of the centerline of the fartherest forward mounting hole on the frame. (There are three holes on top of the frame for engine mounts, my 283 used the rear two.)

I am locating my 6.0 Litre 1" forward of the 283 to allow a little more clearance at the back of the engine, although it would fit in the same location. The ECE mounts look good but a little pricey. I tried the CPP mounts but I have too many interference problems with them, exhaust manifolds and air conditioning compressor. My engine came with the fancy late model (2005) mounts and I am fabricating perches to be able to use them. I will do a thread on it in a couple of weeks.

Good luck,

TR