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Old 05-16-2021, 02:15 PM
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Default Locating LS Engine

I'm making good progress on installing my little 5.3 starter engine. I wasn't sure what kind of pre-fab mounts would be right for my car. I decided to use universal engine mounts. They look nicer and are rock solid. So now I'm trying to locate it properly before I fit weld up the frame side mounts. I know that the Pontiac engine was offset to the passenger side. The passenger frame stand is 1/2" shorter than the driver side on. Now they set on and angle, so that's not a full 1/2" offset. Anyone have any suggestions on how, and where, to measure? Needs to be level side to side, centered so the centerline of the crank is parallel with the frame, and angled up to closely match the angle of the pinion under load. Something like that. I wish I had taken some measurements before I removed the 455.
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  #2  
Old 05-16-2021, 02:20 PM
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It's being mated to the 400 turbo for now. I used an adapter plate. What a POS!!! I had to modify it so it would even work. Countersunk the back side and TIG welded some flatheads in it. Don't know how average Joe six-pack would ever use this thing. I have an SFI bellhousing on order with BOP and Chevy patterns.

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Old 05-16-2021, 02:38 PM
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The kits Holley makes get very high reviews for ease of use, and proper mounting location/geometry. I'm sure they're not cheap. But the headache factor may make it a good deal... FWIW

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Old 05-16-2021, 03:31 PM
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Quote:
Originally Posted by Scott65 View Post
The kits Holley makes get very high reviews for ease of use, and proper mounting location/geometry. I'm sure they're not cheap. But the headache factor may make it a good deal... FWIW
I have read good things about Holley also. I've seen where people bought the engineered mounts and had to modify anyway. So I figured that I might as well do the whole thing and end up with a nicer mount. I can do this easily once I get a handle on the numbers.

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Old 05-16-2021, 04:26 PM
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Test fit Speed Engineering headers. Hitting on driver side lower control arm bracket a little. NBD.

Just as a quick visual, I put a framing square on the firewall and checked to see if the engine is perpendicular. Looks perfect.
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Old 05-16-2021, 04:34 PM
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Quote:
Originally Posted by JSchmitz View Post
I have read good things about Holley also. I've seen where people bought the engineered mounts and had to modify anyway. So I figured that I might as well do the whole thing and end up with a nicer mount. I can do this easily once I get a handle on the numbers.
They seem to be well engineered and avoid obstacles in the common stuff anyway. A, G, F body gm, Fox, sn 95, and trucks of all sorts. Looks like you have a firm grasp on it without, so that's good. Keep up the good work. And update for those of us yet to take that plunge.

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  #7  
Old 05-20-2021, 06:18 AM
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Getting closer. Trying to get front and back u-joint angles proper. Have the engine about as flat as it will go without hitting crossmember and steering. Shimmed the trans up as far as it would go (5/8" higher). Gonna have to get some adjustable upper control arms for the differential to get the rear angle in.
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Old 05-20-2021, 06:20 AM
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How do I fix the turned pic syndrome? Ugh

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Old 05-20-2021, 07:43 AM
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Idk, but pass along the answer if you find out! Mine do that too...

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  #10  
Old 05-21-2021, 10:06 AM
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Even with a truck intake, the hood closes with about an inch to spare.
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Old 07-20-2021, 06:20 AM
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Still plugging away at it. I re-routed the brake line. Factory routing loops behind the crossmember. Interfered with the oil pan. Also tucked it outside the frame rails on the sides for better header clearance. Have the frame stands all welded up and bolted down. Also installed the Ultra Bell on the 400 turbo. Switched from 13" Continental converter to a tight 10". The Ultra Bell will only accommodate a 11" or 12" converter max depending on when it was made. The newer ones apparently have a little more clearance.
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  #12  
Old 07-20-2021, 12:31 PM
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Wow that truck intake is tall, compared to the CTSV intake on my LS2 Solstice!

Good work so far.

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  #13  
Old 07-20-2021, 12:39 PM
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Quote:
Originally Posted by camerjeff View Post
Wow that truck intake is tall, compared to the CTSV intake on my LS2 Solstice!

Good work so far.
I was pleasantly surprised that the intake clears my hood by about 1-1/2". I want to clean off some of the unused brackets.

Thanks!

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