Toddoky

You’ll use the 7222021HKR crossmember and the 12657HKR spacer block time install your 4L60E transmission, as long as your transmission is the later LS type design with the bolt-on bellhousing. I would recommend that you use the forward bias engine mounting brackets if you want to avoid having to cut and modify the tunnel.

Potent68

We used the stock crossmember on our '68 (coupe) with the Hooker motor mounts, oil pan, headers, and exhaust. I think we had to drill some new holes in the frame for the new position of the crossmember, but the stock one worked fine. We're running an LM7 and 4L60E.

Our car was originally a 307 powerglide.

Pjeddi

Toddoky thank you for the reply, the part number I got for the engine mount is 71221007HKR but it says stock location. I for sure do not want to cut the tunnel to fit trans was actually one of the deciding factors of choosing 4L60E trans. Here is a list of parts I was thinking of buying for this build

Holley oil pan 302-2
Hooker Headers (long) O2 sencor 70101319-RHKR
Hooker Crossmember 71222021HKR
Trans adapter 4L60E 12657HKR
Hooker Engine mount 71221007HKR
Calm shell engine mount 71221018HKR
engine mount insert 71221016HKR
Holley engine/trans contrloler 550-918

Pjeddi

Toddoky I think this might be the forward engine mount you are talking about, correct?
71221008HKR

Toddoky

The 71221006HKR engine mounting brackets are the ones you want to use.

Pjeddi

Copy so even the engine mount would be for the 68 to 72. It all gets confusing since I have a 66, really appreciate your help
pj

Toddoky

No, my mistake, I thought your car was a 68-72 since you posted your question in this specific thread. You will need to use the components from the 64-67 LS swap system. There is currently no bolt-in crossmember coverage for the boxed frame versions of those cars. I would modify the ends of the Hooker Blackheart 64-67 crossmember, or the center of your stock crossmember to mount your transmission.

Pjeddi

How much of a difference is there between 66 frame and 68? I don’t have my stock crossmember.

Toddoky

The frame attachment geometry of the engine mounting brackets and the crossmembers is completely different and the 64-67 frames are also narrower than the 68-72 frames in the areas adjacent to the engine.

Blacksix

Just installed your 71221006HKR mounts, nice quality pieces. I noticed that they remove the typical passenger-biased engine centerline and center the LS between the frame rails. So will the unit with trans (4L80e) still be phased properly? The trans should self-align on the new mounts but will be 1/2" off-center from the pinion, but still parallel to the original position. Is this all as it should be?

G Atsma

As long as the new centerline is parallel to the previous one, you'll be fine.

Blacksix

On the 302-2 pan, is there enough material in the front passenger side of the pan to drill and tap an NPT fitting for a turbo oil drain, just below the rail?

Chocolate Apocalypse

iTrader: (6)

No, not if you're going 1/2" NPT. You'll need to tap into the side somewhere back by the starter, any further forward and things get tight around the crossmember.

Goldhawg

iTrader: (7)

I did my swap in 2012 before this kit was available and would like to swap over to the Holley system. I have a CTS-V oil pan; can I swap to the Holley pan without completely pulling the engine out? Wondering if its possible to swap the mounts and the holley pan in by picking the engine up just an inch or two off the existing mounts using an engine hoist.

ycgoat

I think the 302-3 pan already has drain ports installed and is notched for a stroker

Chocolate Apocalypse

iTrader: (6)

There isnt' much room for fittings with the 302-3 and an A-body front crossmember. I have that pan and had to drill and tap back by the starter. If you have an extremely low profile 90 degree fitting it may work, anything bulkier with a smooth transition and you'll be into the crossmember.

the450r

iTrader: (1)

you can if your remove the transmission. I removed my fbody pan while I was doing the clutch in my A body and I had the car on a lift. I lifted the engine and placed wood blocks under the engine mounts and a screw Jack on the back of the block.

daaaanz67

Ok guys I received my 302-3 pan today. Upon opening the box today I noticed the bag that pan was in was specially torn open by the drain plug location. Upon further inspection, I also noticed loose hardware just thrown in the box. I also noticed the threads in the drain plug hole has a helicoil. I even fond the little break off tab from the helicoil in the shipping box. I test fitted the drain plug, it seemed to have a little more wobble than a normal threaded hole would have. It went in and seemed to seat against the pan correctly. The pan appears to be unused. The fitting for the oil filter has some sort of blue Teflon paste on the threads. I don’t think Holley would put that on there. So my question is is this normal for the helicoil to be there? I didn’t see the drain back oil holes having any threading issues. I have not reached out to Holley yet, I figured more people on here with more experience. Maybe Toddoky can chime in on this.

Toddoky

As far as I know, the thread insert in the drain plug hole is a standard manufacturing requirement of the oil pan. I can’t say on the thread sealant usage as I don’t know what the assembly process they use on the line is. I rarely see new Holley pans in my daily work as I use sample pans for prototyping that I’ve had in my inventory for multiple years.

daaaanz67

Thanks for the response Todd. It makes more sense to be threading a steel bolt into steel threads. It just seemed weird that the bag was sealed and only torn at the drain plug area. I wasn’t overly worried about this issue or the blue Teflon cream on the filter adapter. I have purchased the pan and still waiting on the engine mount along with the trans X- member for my 70 Chevelle. This has been a long time coming as this was my first car and have owned it for the last 36 years. Thanks again, I’ve been following your swap components for a very long time before any of the chevelle stuff was designed.