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Whats the difference between the crankshafts for the 3.1 that have 981 and 268 casting numbers??
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1996 Beretta
3100 SFI TURBO
T28 60 Trim Turbo at 9psi, Stage 1 turbo cam mms, lifter upgrade springs mms, P&P heads, ls6 Valve Springs, Ported exhaust manifolds, Hyperuetectic pistons SP, 3.29 trani, MSD 8.5 wires, open exhaust, Pulstar plugs, 3400 intake manifolds, ported TB, 36 lb/hr injectors, RCI Fuel cell, Walbro 255 pump, A/C Bypass, and much more.
13.1 @ 103 mph best in the 1/4 mile -
981 has the 7x ring for MPFI, 268 is the RWD crank that doesn't have it. -
so can i use a 268 crank in my engine its a 3100 fwd??
1996 Beretta
3100 SFI TURBO
T28 60 Trim Turbo at 9psi, Stage 1 turbo cam mms, lifter upgrade springs mms, P&P heads, ls6 Valve Springs, Ported exhaust manifolds, Hyperuetectic pistons SP, 3.29 trani, MSD 8.5 wires, open exhaust, Pulstar plugs, 3400 intake manifolds, ported TB, 36 lb/hr injectors, RCI Fuel cell, Walbro 255 pump, A/C Bypass, and much more.
13.1 @ 103 mph best in the 1/4 mileComment
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How are you going to trigger the ICM then?-Brad-
89 Mustang : Future 60V6 Power
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Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blogComment
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ICM? idk thats why i ask i ordered a crank with casting 981 and it was junk so they sent me this one....
1996 Beretta
3100 SFI TURBO
T28 60 Trim Turbo at 9psi, Stage 1 turbo cam mms, lifter upgrade springs mms, P&P heads, ls6 Valve Springs, Ported exhaust manifolds, Hyperuetectic pistons SP, 3.29 trani, MSD 8.5 wires, open exhaust, Pulstar plugs, 3400 intake manifolds, ported TB, 36 lb/hr injectors, RCI Fuel cell, Walbro 255 pump, A/C Bypass, and much more.
13.1 @ 103 mph best in the 1/4 mileComment
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The notches in the crank are for the crank position sensor. This sends a signal to the ICM (ignition control module) which then tells the ECM the position of the crank so that it fires the spark plugs at the right time. If you got a crank without the 7x ring, then your car basically isn't going to start.-Brad-
89 Mustang : Future 60V6 Power
sigpic
Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blogComment
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wtf now i gotta try and get these people on ebay to send me another crank ugh. thanks for the help
1996 Beretta
3100 SFI TURBO
T28 60 Trim Turbo at 9psi, Stage 1 turbo cam mms, lifter upgrade springs mms, P&P heads, ls6 Valve Springs, Ported exhaust manifolds, Hyperuetectic pistons SP, 3.29 trani, MSD 8.5 wires, open exhaust, Pulstar plugs, 3400 intake manifolds, ported TB, 36 lb/hr injectors, RCI Fuel cell, Walbro 255 pump, A/C Bypass, and much more.
13.1 @ 103 mph best in the 1/4 mileComment
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wait check this out 981 crank for a rwd no notchs my 268 has em
http://cgi.ebay.com/ebaymotors/90-91...item51910aead8
and this....
http://cgi.ebay.com/ebaymotors/GM-3-...item51892c98a3
1996 Beretta
3100 SFI TURBO
T28 60 Trim Turbo at 9psi, Stage 1 turbo cam mms, lifter upgrade springs mms, P&P heads, ls6 Valve Springs, Ported exhaust manifolds, Hyperuetectic pistons SP, 3.29 trani, MSD 8.5 wires, open exhaust, Pulstar plugs, 3400 intake manifolds, ported TB, 36 lb/hr injectors, RCI Fuel cell, Walbro 255 pump, A/C Bypass, and much more.
13.1 @ 103 mph best in the 1/4 mileComment
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If your 268 has the notches then it should work. Go figure GM would do something stupid like have the same casting on 2 different cranks... lolComment
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ALL Cranks cast after 87 were internal balance and had the timing disc cast into the crank. Weather it was machined with notches or not depends on the application.1993 EXT. CAB, 3.4L V6 TBI, 5spd manual. Sonoma
1990 4Door, 3.2L V6 TBI, 5spd manual. 4X4. Trooper
Because... I am, CANADIANComment
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wow thats messed up yeah i compaired the cranks ive got 3. 2 981s and a 268 they r all the same. they all have 7 notchs and they r all in the same place on all the cranks so im gunna use it i guess...
1996 Beretta
3100 SFI TURBO
T28 60 Trim Turbo at 9psi, Stage 1 turbo cam mms, lifter upgrade springs mms, P&P heads, ls6 Valve Springs, Ported exhaust manifolds, Hyperuetectic pistons SP, 3.29 trani, MSD 8.5 wires, open exhaust, Pulstar plugs, 3400 intake manifolds, ported TB, 36 lb/hr injectors, RCI Fuel cell, Walbro 255 pump, A/C Bypass, and much more.
13.1 @ 103 mph best in the 1/4 mileComment
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I always thought a casting number was used to keep track of a certain cast and when the part started to show flaws they would scrap that casting number mold since it is wearing out.
but as you have seen as long as it has the 7 notches you should be good to go.
Got Lope?
3500 Build, Comp XFI Cam 218/230 .050 dur .570/.568 lift 113LSA
Fully Balanced, Ported, 3 Angle Valve Job, 65mm TCE TB, S&S Headers.
Stage-1 Raybestos/Alto 4t60e-HD, EP LSD, 3.69FDR
12.61@105 Epping NH Oct 2015 Nitrous 100shot (melted plugs) 13.58@98.8 N/A 3200LBSComment
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They could just be cast in different plants.1993 EXT. CAB, 3.4L V6 TBI, 5spd manual. Sonoma
1990 4Door, 3.2L V6 TBI, 5spd manual. 4X4. Trooper
Because... I am, CANADIANComment
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