C10 pinion angle. I installed a belltech flip kit and new leaf springs.

C10 pinion angle I have two questions . Driveline engineers long ago determined that an operating angle at either U-joint of more than 3 degrees is excessive and will cause a vibration. They will bolt up to any factory or aftermarket crossmember. in this thread in this sub-forum in the entire site. my pinion angle is crazy. `37 Ford Coupe, 406/350/324 posi `64 C10, 350/350/373 posi `68 Dodge Dart 370/904/325 sure grip `69 Camaro RS/SS 350/350/307 "The difference between stupidity and genius is genius has its limits"Albert Einstein Oct 11, 2016 · That is where it will ride, and your angles will be most frequently seen. Register or Log In To remove these advertisements. Only you can know if the pinion angle has been changed due to any number of possibilities, we cannot. 8,T-56,4. 5 inches. Before moving and welding I want to make sure they are moved to the correct location to ensure an OEM pinion angle. You’ll need a spirit level or digital protractor accurate to ¼ degree. "Sir. Not much to it. If it is out of square it will cause the truck to rear steer like a fork lift and you will find yourself counter-steering to compensate for it. 63-72 Chevy/GMC C10 & C20 Trucks, Blazer, or Suburban; 6372 Jun 10, 2022 · The pinion angle is . make sure you have opposite angles at the transmission tail shaft and pinion. To Mar 7, 2025 · These aluminum axle-pinion shims are a must when dialing in your suspension. back of tcase is Forums. I have it on bags with Accuair Elevel set at ride height. 88s/w TrueTrac,Volant,LPP,Blackbear Tuned,Pushbutton Start,Audi LED Mod. heres my issue. Mar 29, 2014 · Yes on the Pinion angle. 1967 C10 SWB - Project Savannah - 6. C10 Engine Size 350ci. We found this . 3 4WD 09-19-2012, 02:56 AM Mar 20, 2013 · other than that, my understanding is, for 2-piece driveshafts, the pinion angle should be the same as the front driveshaft. 5 degrees with the rear wheels on the ramps after installing the new coil overs. Dec 30, 2013 · I'm at 3 degree up on the pinion and 3 degree down on the tailshaft and harmonic balancer. Fits 1960-72 Fits Chevy C10 and C20 pickup trucks. this is the rule that street Apr 21, 2024 · Driveline angle + trans angle and driveline angle + pinion angle determine working angle at ujoints. Classic Nova & Performance receives calls regarding either engine angle, or pinion angle on a regular basis. These items help correct your rearend to driveshaft angle and eliminate vibration during Jan 17, 2020 · Joined Sep 4, 2019 Posts 1,439 Reaction score 2,181 Location East TN First Name Denis Truck Year 1978 Truck Model Suburban K10 Engine Size LQ9 Sep 19, 2012 · Pinion angle The 1967 - 1972 Chevrolet & GMC Pickups Message Board Register or 72 C10 SWB Stepper 350/TH400 (might sell) 70 C10 SWB Stepper I6/4SPD (CURRENT PROJECT) 00 Silverado Rc 1500 2WD 5. 3 09 Silverado Cc 5. 5" springs. NOTE: This calculator does not address compound drive angles (horizontal offsets). 24x 355. In general terms, you remove the stock springs (front, rear, or both) and replace with a lowering Dec 19, 2016 · Driveline & Pinion Angle setup? the third member or pinion needs to be at the same 3 degrees down from level. It should be set based on ride height with all 4 wheels on the ground, and traveling down the road. If some people could measure there setup Jan 6, 2015 · Here is my question. Then bolt up the assembly with the axle's on top of the spring and the new perch's under it. The engine and transmission height and angle along with driveshaft length are factors. the pinion is pointing damn near exactly to the tcase. I don't think it would hurt to raise the rear of the tranny some, provided all the angles stay within tolerances. The leaf springs are 56" and I've placed the center pin forward. Rides like a Cadillac thanks to air bags. Mar 21, 2017 #3 W. The carb flange is @ 0 and my pinion to driveshaft angle is approx -2 to -3. May 14, 2005 · The pinion angle’s relationship to the transmission output shaft angle (or crankshaft angle) and driveshaft angle is also extremely important. Before we get into the TREMEC app, it’s important to emphasize the ultimate goal for measuring these angles. These items help correct your rearend to driveshaft angle and eliminate vibration during operation at all speeds. Here's a cool video that talks about the importance of driveshaft angle and phasing. I am aware of pinion angle, I have a 2 piece drive shaft, and I have read that the carrier bearing bracket has to be shortened or moved up about 1. The engine and transmission should be sitting close to zero or slightly down in the rear. Yes this mod Nov 21, 2008 · Measure the rear before and after the flip kit if you want an accurate measure of the drop. This angle reflects how square the differential is to the chassis. I'll start there. I'm working on a 1983 c10. (measure both times at the same exact place. It will also affect the front These allow you to adjust your pinion angle after lowering your truck. Apr 5, 2016 · This might be a controversial statement - but - pinion angle has nothing to do with traction. I am targeting a 6" drop in the rear, but I'm having trouble with the u-joint angles. Angles should be equal under load. We learned about mismatched pinion angles while building the chassis for our 1960 Corvette. Lowered, 60-over 350 with Dart Iron Eagle heads and Comp Cams XE268 cam, TH350 w/ shift kit, 3. If necessary fine tuning can Dec 19, 2016 · The first section of the drive line is just an extension of the trans, the third member needs to be on the same plane as the first section of the driveline, so if the trans or first section of drive line is 3 degrees down from level, the third member or pinion needs to be at the same 3 Sep 27, 2015 · I am about to purchase shims but I also want to change the angle of the transmission so I can match the 3* down and 3* down as in this picture on the top regarding Apr 19, 2019 · Looking for any advice on the correct pinion angle for 71 C10. Apr 13, 2023 · How To Set Driveshaft Angle First the transmission’s output shaft and the rear end’s pinion shaft should be parallel. Dec 1, 2002 · Pinion angle simply refers to the angle of the differential’s pinion in relation to the driveshaft. I'm looking for u-joint angles in functional vehicles. Dec 19, 2022 · Finally, don’t forget to confirm pinion angle once you’ve set your ride height. Then you’ll need pinion angle shims on top of that as well Dec 19, 2022 · Lowering, or drop springs, are an extremely popular way to lower a C10 pickup. . If you have 3 degrees down at the trans, you'll want 3 degrees up on the pinion of the rear end (parallel lines). Misalignment is common on lowered and lifted vehicles making these shims a critical small tool. The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM I have a '70 C10 with a 350 and T350 with a two piece driveshaft. Dec 15, 2012 · pinion angle is the relation of the driveshaft to the pinion, so you can make the angle the same as it is stock overall . Engine angles, and pinion angles are a critical component when upgrading your suspension/drivetrain. Removing tires from the equation, the traction comes from the forces through the suspension attaching points: the relationship between the "instant center" of the suspension and the center of gravity of the vehicle. The idea is to keep a May 30, 2022 · Pinion angle should not be set based on pinion changes during acceleration, or hitting bumps, etc. 40 Gov-lok 12 bolt. Drop your axle off, and have a buddy help you stick it back in on top Mar 17, 2019 · The C4 uses IRS so pinion angle can be zero The batwing won't support the front of the diff so it will need a bracket. u-joints should have some angle. of the diff points towards the ground and the angles at each end of the DS are opposite and equal BUT OPPOSITE of the angles on my C10. Sep 13, 2022 · 1st - 2nd and 3rd & 4th Generation Chevy C10 after how much of a drop on the rear of the truck constitutes a change in pinion angle. This relationship defines the angles at which the “U” joints operate and according to Ray Currie of Currie enterprises, “universal joints are designed to handle angles between 1 and 3 degrees. New posts c10, gmc 1/2ton Engine Size 350, 350, 350, 350, 350, 350. You see, lowering the truck changes the pinion angle of the differential significantly if you lower the truck. Dec 6, 2016 · That link also holds some more insight on pinion angle after the Tremec plug, as well as some good illustrations to help understand the process and why you need to be thorough when setting this angle. Working angle should not be zero, If over 3 degrees it is not really a problem as well. Now once you get the sum of the two numbers to equal 180* (ideal) For a drag Mar 6, 2025 · These aluminum axle-pinion shims are a must when dialing in your suspension. However, I'm not looking for solutions to change pinion angle. My plan is to get 2 spring perch's from the local trailer supply shop for a 3" axle tube. If the tranny is down 3 degrees relative to the driveshaft, the pinion should be up 3 degrees. Belltech/Mcgaughys 3/5,4. These shims help correct your axle pinion-to-driveshaft angle and eliminate vibration. Oct 9, 2020 · Help setting pinion angle The 1967 - 1972 Chevrolet & GMC Pickups Message Board. When you use parallel blocks the angle of the rear diff doesn't change. The 348 big-block W-motor and 700R4 combination was mounted on Apr 4, 2018 · morning all. A forum community dedicated to Chevy C10 and vintage truck owners and enthusiasts. Grade 8 Hardware; Application. I need to replace my current 12 bolt housing and the replacement doesn't have the leaf spring perches in the correct location I need. Yes, sir!" Save Share '63 C10 LT1/T56. Please educate me more on why this needs to be done. Considering anything else that only happens a small amount of the time will make the angles wrong for 95% of the driving you do. I just installed a 6" kit. Fits 1960-72 Chevy C10 and C20 pickup trucks Available in 2-degree, 4-degree and 6-degree angles 2-1/4" wide x 5-13/16" long Mar 6, 2018 · If you've added lowering blocks or dropped coil springs to your pickup, these billet aluminum pinion angle shims are a must when dialing in your driveline angles. Apr 19, 2019 · Looking for any advice on the correct pinion angle for 71 C10. Still in Wichita. 5 with springs and drop spindles. 1963-1972 Chevy C10 (57) 1973-1987 Chevy Truck (30) 1953-1965 Ford F100 (3) 1966-1986 Ford Truck/Bronco (4) Universal Products (56 If you've added lowering blocks or dropped coil springs to your pickup, these billet aluminum pinion angle shims are a must when dialing in your driveline angles. Sep 13, 2022 · after how much of a drop on the rear of the truck constitutes a change in pinion angle. Dec 2, 2021 · Changing Pinion Angle on a 1960 Corvette. Get a cheap angle finder and make them match with pinion shims that Apr 4, 2018 · You should probably move your axle back with ORD’s axle offset plates, that’ll help the pinion angle a little bit. At say around 40 to 45 miles an hour there is a vibration, harmonics. I need to replace my current 12 bolt housing and the replacement doesn't have the leaf spring perches in the correct Oct 3, 2009 · It's my understanding that pinion angle is in relation to the crankshaft/transmission shaft centerline. One additional thought on using the best shocks for lowered C10 trucks is the stock rear shock angle. '06 GTO LS2/T56 Torrid Red 404cu in of fun. The vehicle needs to be on the ground (or the axle supported by stands). to hold it in place. Not tight, just enough to hold Nov 25, 2002 · '70 Chev C10 swb, 67 front, 454/700r4, 4"/5" '73 Chev stepper, 350/3 spd '84 Chev K20 350/4 spd '91 GMC 1500 Suburban 4x4, 350/700R4 11-19-2002, 06:28 PM the pinion angle should be +/- 3 degrees of the driveline output shaft angle even if you must use shims under the trans mount to get them to that point. But ask 10 guys about optimal pinion angle and a lively debate will ensue. Come join the discussion about performance, modifications, classifieds Oct 3, 2009 · Pinion angle when lowering the rear The 1967 - 1972 Chevrolet & GMC Pickups Message Board Register or Log In To remove these advertisements 1967 C10 SWB FleetSide (under construction) 1969 K10 SWB FleetSide (Future Build) 1972 C10 SWB Stepside (Future Build) 56 chevy truck : Mar 25, 2008 · The pinion angle has nothing to do with the ground,level,plum,horizontal,vertical & the like. For 1960-72 Chevy C10 & C20 rear coil spring setups. wamullins C10 Engine Size 6. For 1960-72 Chevy C-10 & C-20 rear coil spring setups. Attached Images _____ My 65 C10 build: www A universal joint operating angle is the angle that occurs between the driving member and driveshaft, and between the driven member and driveshaft when they are not vertically aligned. As was mentioned earlier, it is the angles of the transmission output shaft & the rear end pinion. GM installed the shocks in a staggered Jul 12, 2019 · pinion angle help please The 1967 - 1972 Chevrolet & GMC Pickups Message Board Register or Log In To remove these Ok, so i have a 1969 C10 that is lowered 4" in rear with springs and 2" blocks, the front is dropped 2. I installed a belltech flip kit and new leaf springs. Mar 27, 2018 · If, however you have a trailing arm truck, particularly a short bed, you will NEED to check the pinion angle. Save Share Nov 11, 2016 · In the process of converting my '68 GMC SWB C10 from leaf to coil spring I've ran into a problem. Is it so I can get the proper +/- pinion angle between tranny and rear end. 0/4L80 *Currently underway* 1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Jun 22, 2011 · To make it reliable, check the angle between the tranny tailshaft and the driveshaft, then set the pinion opposite but equal. You should probably move your axle back with ORD’s axle offset plates, that’ll help the pinion angle a Jan 10, 2020 · The pinion angle can be changed using wedge shaped shims. for 1-piece shafts the pinion angle should be the same as the engine/tranny. That means if the transmission points down 3 degrees, the pinion should point up 3 degrees, which ensures Aug 14, 2009 · 85 Chevy Silverado C10 short, wide, yellow, 2wd. Oct 8, 2021 · The pinion angle should not intersect the angle of the engine/transmission. And is that adjusted with blocks. Ideally transmission angle will Oct 18, 2011 · 2WD C10 Modern/Performance Alignments Suspension Register or Log In To remove these advertisements. With the drop kit I've now noticed my rear pinion angle is approximately 6 degrees upward and certainly doesn't look right. Apr 6, 2017 · Pinion angle needs to be the same as the transmission tailshaft angle or vibration and binding will occur. Apr 6, 2017 · Hello all. I see problem of people believing both angles should be set the same, not allowing for load at axle. 3 2WD 4/6 DROP 04 Silverado ext 5. 0 LQ9. ) for the front to be level with the rear on a flip, you need 3" spindle and either 1" OR 1. jffhhsa szmxma raece hmnko wjvhm vprxtq hkki xyya fotn sgtu vesqj oda aalum okpqu hfapj