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#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?

Joined: Apr 2005
Posts: 10,770
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)
‘65 Chevy Biscayne 4dr 230 I-6 one owner (I’m #2) “Emily”
‘39 Dodge Businessmans Coupe “Clarence”



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Joined: Dec 2008
Posts: 1,707
P
'Bolter
I agree, most tilt down in the back, up to 8 degrees.

Joined: Jun 2011
Posts: 4,491
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.
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.


1954 3600 Chevy Truck
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Joined: Feb 2000
Posts: 4,459
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 !

Joined: Mar 2010
Posts: 10,103
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.

Joined: Apr 2005
Posts: 3,019
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
Joined: Dec 2018
Posts: 1,567
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.

Joined: Sep 2012
Posts: 160
V
'Bolter
Always was told about 3 degrees....

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