carbed LS1 in 72 Firebird
Thread Starter
Joined: Jun 2005
Posts: 755
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From: Los Angeles, CA (Burbank)
carbed LS1 in 72 Firebird I am attempting to put a stock 2000 LS1 carbed with the Edelbrock Performer RPM manifold (dual plane) and an MSD 6010 timing controller in my 72 Firebird.
I've done a few searches and saw a few posts from people putting LS1s in second gen Camaros. From what I understand, I would need SBC motor mounts for a stock crossmember, and LS1-to-SBC-motor-mount adapters. This makes sense to me, but is this all there is to fitting the LS1 into the engine bay?
Does anyone know of anything else I should look out for, such as header clearance?
I have a TH400 in the Firebird now, so I know it will bolt up. I'll try to get some pics soon.
Thanks for any help/advice guys
I've done a few searches and saw a few posts from people putting LS1s in second gen Camaros. From what I understand, I would need SBC motor mounts for a stock crossmember, and LS1-to-SBC-motor-mount adapters. This makes sense to me, but is this all there is to fitting the LS1 into the engine bay?
Does anyone know of anything else I should look out for, such as header clearance?
I have a TH400 in the Firebird now, so I know it will bolt up. I'll try to get some pics soon.
Thanks for any help/advice guys
Teching In
Joined: Nov 2008
Posts: 19
Likes: 0
From: Perth, Australia
For my '71 Firebird Formula I used Edelbrocks engine mount adaptor plates, Energy Suspensions Polyurethane SBC 'tall and narrow' motor mounts and I used '70-'72 Big Block Camaro frame stands which bolt up to the Firebird crossmember. If you have a stock LS1 F-Body oil pan it will clear the crossmember no problems, otherwise you will need to source one. I also used Edelbrocks 4-1 Headers as they are designed for LS motors in second gen f-body's and they fit nice.
If you have a Pontiac (BOP) belhousing bolt pattern TH400 it will not bolt up. A Chev bellhousing bolt pattern TH400 will bolt up to your block but you will need to get a special flexplate or an adaptor kit so the converter matches up. Have a look in the Auto trans section of the forum for info on this.
Hood clearance is a bit of a problem with the second gen Firebirds when using a 4 barrel manifold, I'm pretty sure the single plane will not clear with a carb, so get some measurements of the dual plane to be sure
If you have a Pontiac (BOP) belhousing bolt pattern TH400 it will not bolt up. A Chev bellhousing bolt pattern TH400 will bolt up to your block but you will need to get a special flexplate or an adaptor kit so the converter matches up. Have a look in the Auto trans section of the forum for info on this.
Hood clearance is a bit of a problem with the second gen Firebirds when using a 4 barrel manifold, I'm pretty sure the single plane will not clear with a carb, so get some measurements of the dual plane to be sure
i highly reccomend a vic. jr instead of dual plane.
these ls engnes do not suffer from lack of low end with single planes. like an sbc.
also the msd/ebrock box is very simple and user friendly.works off pills
these ls engnes do not suffer from lack of low end with single planes. like an sbc.
also the msd/ebrock box is very simple and user friendly.works off pills
Thread Starter
Joined: Jun 2005
Posts: 755
Likes: 0
From: Los Angeles, CA (Burbank)
For my '71 Firebird Formula I used Edelbrocks engine mount adaptor plates, Energy Suspensions Polyurethane SBC 'tall and narrow' motor mounts and I used '70-'72 Big Block Camaro frame stands which bolt up to the Firebird crossmember. If you have a stock LS1 F-Body oil pan it will clear the crossmember no problems, otherwise you will need to source one. I also used Edelbrocks 4-1 Headers as they are designed for LS motors in second gen f-body's and they fit nice.
If you have a Pontiac (BOP) belhousing bolt pattern TH400 it will not bolt up. A Chev bellhousing bolt pattern TH400 will bolt up to your block but you will need to get a special flexplate or an adaptor kit so the converter matches up. Have a look in the Auto trans section of the forum for info on this.
Hood clearance is a bit of a problem with the second gen Firebirds when using a 4 barrel manifold, I'm pretty sure the single plane will not clear with a carb, so get some measurements of the dual plane to be sure
If you have a Pontiac (BOP) belhousing bolt pattern TH400 it will not bolt up. A Chev bellhousing bolt pattern TH400 will bolt up to your block but you will need to get a special flexplate or an adaptor kit so the converter matches up. Have a look in the Auto trans section of the forum for info on this.
Hood clearance is a bit of a problem with the second gen Firebirds when using a 4 barrel manifold, I'm pretty sure the single plane will not clear with a carb, so get some measurements of the dual plane to be sure
I have the dual snorkel hood, but if I have to cut, I'll get a flat junky hood, and cut into that and paint it...
Thread Starter
Joined: Jun 2005
Posts: 755
Likes: 0
From: Los Angeles, CA (Burbank)
I hear you though, I'm sure people have used the Vic Jr on stock LS1s and been fine.
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Verdad Gallardo Thread Starter
Joined: Jun 2005
Posts: 755
Likes: 0
From: Los Angeles, CA (Burbank)
Here are a few pics of the car and the..."carburetor" I'm going to use. (Please keep the tbi hate comments to yourself, I've heard 'em all. 
)
I'll post pics of the engine soon; waiting on the oil pickup, windage tray, and coils.
)I'll post pics of the engine soon; waiting on the oil pickup, windage tray, and coils.
Staging Lane
Joined: Sep 2009
Posts: 71
Likes: 0
From: Anchorage, Alaska
Hey, awesome build. Are you going to use that TBI unit on an LS1? That'll be interesting to see how that turns out. A mechanic I'm familiar with was using the same unit on a red 69 chevy truck, just he had it bolted up on a 350. His build is pretty cool too, accept it's been sitting in his shop for 3 years...... 
Thread Starter
Joined: Jun 2005
Posts: 755
Likes: 0
From: Los Angeles, CA (Burbank)
Hey, awesome build. Are you going to use that TBI unit on an LS1? That'll be interesting to see how that turns out. A mechanic I'm familiar with was using the same unit on a red 69 chevy truck, just he had it bolted up on a 350. His build is pretty cool too, accept it's been sitting in his shop for 3 years......
I ran it on my Pontiac 400 and I loved it. EASY to set up, just plug and play. I like the way it looks too, when my dirty fingerprints aren't all over it. 
Man tell the mechanic with the 69 truck to drive that thing!!
