Bueler?... Bueler?
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| stock hydraulic cam #'s https://slantsix.org/forum/viewtopic.php?t=16426 |
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| Author: | ceej [ Fri Mar 03, 2006 6:31 pm ] |
| Post subject: | stock hydraulic cam #'s |
Does anyone have the stock lift numbers for an '81 Hydraulic cam? I've got an unknown in there. This engine was set up with an offy and holley 390.... So I'm wondering what else might be inside. Any thoughts on measuring without pulling the cam? CJ |
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| Author: | ceej [ Sat Mar 04, 2006 6:35 am ] |
| Post subject: | |
Bueler?... Bueler?
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| Author: | Loghead [ Sat Mar 04, 2006 10:58 am ] |
| Post subject: | |
If you have a dial indicator, set it up to read the total movement at the pushrod end of the rocker arm. Multiply the result by 1.5 (?)to get the valve lift. |
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| Author: | ceej [ Sat Mar 04, 2006 4:14 pm ] |
| Post subject: | |
Copy that. How much squish will I have at the lifter, since it's not pumped up? Unfortunately, I don't have the lift numbers for the stocker.. CJ |
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| Author: | Loghead [ Mon Mar 06, 2006 8:06 am ] |
| Post subject: | |
Oops! I'm red-faced at having forgotten you're using a hydraulic cam. If I were you, I'd opt for removing the entire rocker shaft assembly and setting the dial indicator at the end of the pushrod. "Squish" shouldn't be a factor that way, and you'll get an accurate enough reading to tell if you have a stock cam. Chilton manual (questionable accuracy) lists the lobe lift for '81 as .378", but when you factor in the rocker ratio it comes out to something like .567" at the valve (which I find hard to believe), so I'll say that the .378" is at the valve. Maybe someone can jump in and clear up this apparent confusion. |
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| Author: | radiodelete [ Mon Mar 06, 2006 6:28 pm ] |
| Post subject: | cam lift |
NHRA TECHNICAL SPECIFICATIONS FOR 1981 IS .410/.419 |
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| Author: | radiodelete [ Mon Mar 06, 2006 6:32 pm ] |
| Post subject: | Cam Lift |
NHRA Technical Specifications Issued: 25 July 1981 Revised: 2-16-96, 7-1-96, 5-13-03 Bulletin #: CHRY-81 Page 1 of 1 Specifications for the 1981 Chrysler Corp engines. HP Disp Mfg C.R. Ind. Make Model/Transmission Manifold R.R. Lifter Head cc Notes 63 105 DP 9.89 1-2 H-W R-9052/SM 9054/AUTO 5240374 None M 21.3 1,D 64 86 DP 9.40 1-2 MK 28-32 DIDTA-200/SM 201/AUTO Â Â None 1.55 M 31.3 E 72 97 DP 9.00 1-2 MK 28-32 DIDTA-202/SM 203/AUTO Â Â None 1.55 M 35.5 2,E 84 135 DP 9.72 1-2 Holl R-9064,5/SM 9602,3/AUTO Â Â 5214616 1.61 H 50.6 3,F 90 225 CDP 9.20 1-1 Holl R-9687,95/Auto 4095223, N-5 1.50 H 54.0 A 92 156 DP 10.03 1-2 MK 32-35 DIDTA-30,31/AUTO ONLY Â Â None 1.55 M 50.2 E 105 156 DP 10.03 1-2 MK 32-35 DIDTA-50/SM 51/AUTO Â Â None 1.55 M 50.2 4,E 110 225 CDPÂ Â 9.20 1-2 Cart BBD-8290,8291/AUTO Â Â 4095223, N-6 1.50 H 54.0 A 130 318 CDPÂ Â 9.10 1-2 Cart BBD-8291,8292/AUTO Â Â 4100331, N-7 1.50 H 64.5 B 140 318 CÂ Â Â Â 9.10 EFI NA Â Â 4201397 1.50 H 64.5 B 165 318 CDPÂ Â 9.10 Cart TQ-9364,72,73/AUTO Â Â 4100340, N-8 1.50 H 64.5 B 170 318 CDPÂ Â 9.08 Cart TQ-9364,72,73/AUTO Â Â 4100340, N-8 1.50 H 65.5 C C = Chrysler engines D = Dodge engines P = Plymouth engines Cylinder Head Castings A=3698447,4095778,4104362 B=4027163,4027593,4323302,444308, 4772576 C=4027596,4071051,4448308,4772576 D=5240402,3,76,835 E=No casting # available F=5203655 1 - Alt carbs R-9053,6,7/SM R-9055,8,9/AUTO 2 - Alt carbs MK 28-32 DIDTA-204/SM 205/AUTO 3 - Alt carbs R-9650,2,3,4/SM 9604,5,84,5/AUTO 4 - Alt carbs MK 32-35 DIDTA-52/SM 53/AUTO 5 - Alt manifold 4104549,4104580 6 - Alt manifold 4104578,4104595 7 - Alt manifold 4104506,4201120 8 - Alt manifold 4173915 HP Disp Mfg Deck Piston Height Vol Valves Cam Lift Gasket Springs 63 105 DP .080 Dished .125 7.5 cc 1345/1235 419/419 .068 Outer & Inner 64 86 DP .050 Flat 1340/1190 380/380 .040 Outer Only 72 97 DP .000 Dished .100 Â 8.2 cc 1500/1224 395/395 .045 Outer Only 84 135 DP .010 Flat 1598/1394 445/445 .068 Outer Only 90 225 CDP .115 Flat 1620/1360 410/419 .020 Outer Only 92 156 DP .000 Dished .100 12.0 cc 1800/1500 425/425 .035 Outer Only 105 156 DP .000 Dished .100 12.0 cc 1800/1500 425/425 .035 Outer Only 110 225 CDP .115 Flat 1620/1360 410/419 .020 Outer Only 130 318 CDP .041 Flat 1780/1500 390/420 .030 Outer Only 140 318 C .041 Flat 1780/1500 390/420 .030 Outer Only 165 318 CDP .041 Flat 1780/1500 390/420 .030 Outer Only 170 318 CDP .041 Flat 1880/1600 390/420 .030 Outer Only |
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| Author: | ceej [ Tue Mar 07, 2006 4:05 pm ] |
| Post subject: | |
Thanks for the info! I'll check at the lifter body now that I have the head off. CJ |
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