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We are still asking:
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The question, initially posted May 23, 2005, was:
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this weekend?"

After 51,906,997 views, 7378 replies over 185 pages, this thread in General Truck Talk is a happening! And it's not just weekends anymore.


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What did you get done on your Bolt today????


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Mandatory for engine to sit level?
#1426807 Thu Oct 14 2021 06:47 AM
Joined: Sep 2019
Posts: 221
R
'Bolter
I've got a Buick 350 LT1, fuel injected, in my '50 3100. The engine sits level side to side but is an inch or two tilted down transmission side. Because of the engine mounts needing to be raised to accommodate the ac compressor, I don't have enough clearance on the floor to raise the transmission to make fore and aft level. With carburetion, it is necessary for the bowls and float to work properly...maybe not a concern for fuel injection?

Re: Mandatory for engine to sit level?
Rocket man #1426813 Thu Oct 14 2021 12:18 PM
Joined: Apr 2005
Posts: 10,663
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
Tail down is pretty normal. There is a desired angle that someone will post soon. Having to cut and modify the transmission tunnel is normal too.


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
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Re: Mandatory for engine to sit level?
Rocket man #1426819 Thu Oct 14 2021 01:27 PM
Joined: Dec 2008
Posts: 1,707
P
'Bolter
I agree, most tilt down in the back, up to 8 degrees.

Re: Mandatory for engine to sit level?
Rocket man #1426820 Thu Oct 14 2021 01:28 PM
Joined: Jun 2011
Posts: 4,452
E
'Bolter
3 to 5 degrees down for the engine and trans. is normal. Most intake manifolds are machined to keep the carb. level.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: Mandatory for engine to sit level?
Rocket man #1426822 Thu Oct 14 2021 01:34 PM
Joined: Mar 2008
Posts: 2,053
W
'Bolter
Before I removed my 235, I measured the pitch angle. It was 5 degrees tail down with the chassis level. Since you're using an injected engine, probably not a big deal how much as long as your driveshaft angles are in the good.


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Re: Mandatory for engine to sit level?
Rocket man #1426834 Thu Oct 14 2021 03:13 PM
Joined: Feb 2000
Posts: 4,435
J
'Bolter
U-joint working angles are 1/2 to 3 degrees, more or less under ideal conditions. Thats tail shaft to driveshaft, and driveshaft to pinion gear. As long as the oil pickup is still under oil, and the u-joints are happy, it will work. Setting level doesn't mean much when roads have hills and turns, means even less with fuel injection, just look at how some boat motors are mounted !

Re: Mandatory for engine to sit level?
Rocket man #1426998 Sat Oct 16 2021 03:37 AM
Joined: Mar 2010
Posts: 10,074
5
'Bolter
Just make sure that your engine/transmission drop angle is parallel to your pinion angle within a degree or two to keep the u-joints happy.

Re: Mandatory for engine to sit level?
Rocket man #1427051 Sun Oct 17 2021 02:43 AM
Joined: Apr 2005
Posts: 2,995
C
'Bolter
If you get no driveshaft vibration, leave it alone. Back in carburetor days they had cars in San Fransisco that seemed to do quite well on really steep angles. Ford vans were not only tilted but also offset to the right.


Evan
Re: Mandatory for engine to sit level?
Rocket man #1429411 Sat Nov 06 2021 11:15 PM
Joined: Dec 2018
Posts: 1,444
F
'Bolter
Rocket man Your in the range,make sure u-joints are happy and go for it if no noise you've got it !! It will show up if you go to pull on something like a stuck vehicle.

Re: Mandatory for engine to sit level?
Rocket man #1433734 Thu Dec 16 2021 03:54 PM
Joined: Sep 2012
Posts: 155
V
'Bolter
Always was told about 3 degrees....

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