LM7 into 71 Nova issues
Thread Starter
Teching In
Joined: Mar 2016
Posts: 3
Likes: 0
LM7 into 71 Nova issues Hi guys. Swapping a LM7 into a 71 Nova. I wanted to see how low the rear sump would hang before changing out the pan.
The only issue is the front of the pan is resting on the cross member before the mounts get seated where I can put the motor mount bolt through them. I am using the original frame mounts that were in the Nova. And I am using Jeg's LS engine mount kit with rubber mounts.
https://www.jegs.com/i/JEGS+Performa...BoCkjgQAvD_BwE
At first I was thinking, ok as expected i am having oil pan clearance issues with the truck pan, but this is the front part of the pan, not the rear sump. So I then started looking at the mounts.
Any help is appreciated. Thank you!
The only issue is the front of the pan is resting on the cross member before the mounts get seated where I can put the motor mount bolt through them. I am using the original frame mounts that were in the Nova. And I am using Jeg's LS engine mount kit with rubber mounts.
https://www.jegs.com/i/JEGS+Performa...BoCkjgQAvD_BwE
At first I was thinking, ok as expected i am having oil pan clearance issues with the truck pan, but this is the front part of the pan, not the rear sump. So I then started looking at the mounts.
Any help is appreciated. Thank you!
You're using a generic mount kit, and you didn't say whether or not your car has V8 or 6 cylinder mounts in it, but at any rate you will probably have to shim the stands up if the front of the pan is hitting. That said, even when that does clear, the rear is going to be WAY to low below the crossmember. You would be better off getting an oil pan made for your application.
TECH Senior Member
Joined: Jun 2016
Posts: 22,291
Likes: 3,615
From: Central Cal.
This is why Holley coordinates the WHOLE setup.
Use their mounts, their pan, their crossmember, and if desired their headers/exhaust.
Yes, it costs more INITIALLY, but it WILL all fit and work together instead of haphazardly mixing/matching parts and hoping for the best.
Use their mounts, their pan, their crossmember, and if desired their headers/exhaust.
Yes, it costs more INITIALLY, but it WILL all fit and work together instead of haphazardly mixing/matching parts and hoping for the best.
TECH Fanatic
Joined: Dec 2017
Posts: 1,467
Likes: 265
From: Bossier City, Louisiana
+1 to G Atsma. You also make no mention about concern for drive line angles towards the differential. Holley makes all of this easy with their mounts, their 302-2 pan and their Blackheart LS swap headers. No muss, no fuss with any of this for my 70 El Camino.
Rick
Rick
TECH Senior Member
Joined: Jun 2016
Posts: 22,291
Likes: 3,615
From: Central Cal.
+1 to G Atsma. You also make no mention about concern for drive line angles towards the differential. Holley makes all of this easy with their mounts, their 302-2 pan and their Blackheart LS swap headers. No muss, no fuss with any of this for my 70 El Camino.
Rick
Rick
BTW, if your name above is what you have done, my hat's off to you! Thank you!
I used the Hooker mount kit, now Holley. I used a Mast pan, Holley pan was not yet out.
V8 Nova's had two frame bracket choices. Small block and Big block.
The big block stands (which I used) mount the engine about 1/2 to 3/4" towards the pass side and mount the engine lower than the small block stands.
So if you have BB stands, the truck pan will hit the crossmember.
No matter, the rear sump will practically drag the ground.
Ditto on the Holley recommendation. Very nice parts that fit. The Holley pans will also clear the crossmember.
I just installed a 7qt Moroso pan, and had to notch the crossmember to clear.
Good luck with the project!
Ron
V8 Nova's had two frame bracket choices. Small block and Big block.
The big block stands (which I used) mount the engine about 1/2 to 3/4" towards the pass side and mount the engine lower than the small block stands.
So if you have BB stands, the truck pan will hit the crossmember.
No matter, the rear sump will practically drag the ground.
Ditto on the Holley recommendation. Very nice parts that fit. The Holley pans will also clear the crossmember.
I just installed a 7qt Moroso pan, and had to notch the crossmember to clear.
Good luck with the project!
Ron
Like the other have said use the Holley mounts and pan at minimum
Keep in mind that the 68-74 Nova and 67-69 Camaro had the same subframes and are rear steer. The truck pan fits with a slight crossmember notch but hangs down a couple inches, The F-Body pan fits and doesn't hang down but interfers with the drag link without clearancing either the pan or the drag link.
The Speed Engineering headers fit perfectly on my Son In-laws 73 Nova with a 4l80e and they are very cheap considering they are polished stainless and actually built well.
Keep in mind that the 68-74 Nova and 67-69 Camaro had the same subframes and are rear steer. The truck pan fits with a slight crossmember notch but hangs down a couple inches, The F-Body pan fits and doesn't hang down but interfers with the drag link without clearancing either the pan or the drag link.
The Speed Engineering headers fit perfectly on my Son In-laws 73 Nova with a 4l80e and they are very cheap considering they are polished stainless and actually built well.
Trending Topics
Like the other have said use the Holley mounts and pan at minimum
Keep in mind that the 68-74 Nova and 67-69 Camaro had the same subframes and are rear steer. The truck pan fits with a slight crossmember notch but hangs down a couple inches, The F-Body pan fits and doesn't hang down but interfers with the drag link without clearancing either the pan or the drag link.
The Speed Engineering headers fit perfectly on my Son In-laws 73 Nova with a 4l80e and they are very cheap considering they are polished stainless and actually built well.
Keep in mind that the 68-74 Nova and 67-69 Camaro had the same subframes and are rear steer. The truck pan fits with a slight crossmember notch but hangs down a couple inches, The F-Body pan fits and doesn't hang down but interfers with the drag link without clearancing either the pan or the drag link.
The Speed Engineering headers fit perfectly on my Son In-laws 73 Nova with a 4l80e and they are very cheap considering they are polished stainless and actually built well.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
I have had the Holley LS swap kit since the day they were produced. In fact I had the first production batch of all and helped them figure out a few things.
The pictures on the instructions for the exhaust system are mine, which is pretty cool to see.
All in all, after 6 years of having the car running, everything is still in great condition. I would just buy their engine mounts, oil pan, trans mount and headers. Up to you if you still want the rest.
The pictures on the instructions for the exhaust system are mine, which is pretty cool to see.
All in all, after 6 years of having the car running, everything is still in great condition. I would just buy their engine mounts, oil pan, trans mount and headers. Up to you if you still want the rest.
