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Oh Lord, I just gotta find it....
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Jan 21st, 2020
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Joined: Sep 2019
Posts: 221
OP
'Bolter
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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?
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Joined: Apr 2005
Posts: 10,770
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
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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”
"I fought the law and the law won" now I are a retired one!
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USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
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Joined: Dec 2008
Posts: 1,707
'Bolter
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I agree, most tilt down in the back, up to 8 degrees.
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Joined: Jun 2011
Posts: 4,491
'Bolter
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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.
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Joined: Mar 2008
Posts: 2,053
'Bolter
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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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Joined: Feb 2000
Posts: 4,459
'Bolter
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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 !
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Joined: Mar 2010
Posts: 10,103
'Bolter
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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.
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Joined: Apr 2005
Posts: 3,019
'Bolter
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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
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Joined: Dec 2018
Posts: 1,567
'Bolter
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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.
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Joined: Sep 2012
Posts: 160
'Bolter
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Always was told about 3 degrees....
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