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#1
10-14-2021, 09:49 PM
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How strong are 1310 U Joints?
My 69 Bird has 3.08 gears and 1310 U-joints with zerk grease fittings and stock drive shaft. I’d like to go to track using 26x8.5x15 drag radials. The car has frame connectors that are welded in the front and bolted in rear. The engine made 521/631 on engine dyno with headers and 950 HP. In chassis it has Sniper EFI and Long Branch manifolds through 2.5” exhaust. TH400 with 13” Continental converter.
Is this a disaster waiting to happen and I should wait to upgrade drive shaft and 1350 U-joints? Would a good compromise be upgrading to 1330 U-joints. FWIW, I wouldn’t plan to do this every weekend but maybe a few times a year.
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Will Rivera '69 Firebird, 400/461, 290 Eddy D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears '69 LeMans Vert, XS 350, #47 heads, TH400, 10 Bolt 3.23 gears, work in progress ‘66 Lemans, 455, 310 KRE D-Ports, HR 236/245, TH400, GV OD, 12 bolt 3.73 gears - see it here: https://youtu.be/RP_s1wJKm_Y?si=K0NZxoTyaGcj8Dcb |
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