I found a 70's jaguar at the junkyard today with a sbc in it. I noticed it had the small pad for the ID number so I wrote the suffix down to see what it was. The suffix code is CKT, my list shows that it's a 1972 350 LT-1 from a z28 camaro. Is the 72 LT-1 anything like the 70? Is it worth getting?, are the heads any good? I have know idea if it's junk, or if the heads are even original.
CKT is a 72 LT1 (auto) according to my info. Not quite as good as the 70, but a good motor to grab. 72 was a hydraulic, lower compression version of the 70 LT1. 255 hp for 1972 Vs 370 hp in 1970 (vette). Pull a valve cover if you can, should have screw in studs and guide plates if the heads are original 2.02 >>>good find either way..
well: 1972 Z28 Engine - LT1 255hp (net) <TABLE><TBODY><TR><TD></TD><TD>Casting # </TD><TD>GM P/N</TD><TD>Description</TD></TR><TR><TD>Block</TD><TD>3970010</TD><TD></TD><TD>4 bolt main, suffix codes: CKS, CKT </TD></TR><TR><TD>Crankshaft</TD><TD>330550</TD><TD></TD><TD>Forged steel</TD></TR><TR><TD>Heads</TD><TD>3998916</TD><TD></TD><TD>76.18 cc, 2.02/1.6 valves, screw in studs & guide plates </TD></TR><TR><TD>Cam</TD><TD>3972182</TD><TD>3972178</TD><TD>symbol: (1) square Solid lifter - 0.458(I)/0.484(E) lift, 317I/346E duration</TD></TR><TR><TD>Pistons</TD><TD></TD><TD></TD><TD>Flat w/valve relief - yields 9.0:1 compression </TD></TR><TR><TD>Intake</TD><TD>3959594</TD><TD></TD><TD></TD></TR><TR><TD>Carb (A/T)</TD><TD></TD><TD>3997788 GB</TD><TD>Holley List 6238, 780cfm , 4150 series - 4BBL</TD></TR><TR><TD>Carb (M/T)</TD><TD></TD><TD>3999263 GA</TD><TD>Holley List 6239, 780cfm , 4150 series - 4BBL</TD></TR><TR><TD>LH Exhaust</TD><TD>3989041 </TD><TD></TD><TD>Rear exit, log type w/AIR, 2.026 outlet</TD></TR><TR><TD>RH Exhaust</TD><TD>3986330 </TD><TD></TD><TD>Rear exit, log type w/AIR, 1.96 outlet</TD></TR><TR><TD>Distributor</TD><TD></TD><TD>1112095</TD><TD>Manual Trans, RFI, single point w/vacuum </TD></TR><TR><TD>Distributor</TD><TD></TD><TD>1112049</TD><TD>Auto Trans, RFI, single point w/vacuum </TD></TR><TR><TD>Distributor</TD><TD></TD><TD>1112153</TD><TD>2nd design - M/T, single point w/vacuum & ECC </TD></TR><TR><TD>Distributor</TD><TD></TD><TD>1112156</TD><TD>2nd design - A/T, single point w/vacuum & ECC</TD></TR></TBODY></TABLE>Alternator: Delcotron 37 Amp, part # 1102454 Water Pump: 6263701
Well I took the top end of a untouched supposedly 72 lt1 camaro not to long ago and it didn't have screw in studs but they did have 2.02/1.60 valves
Can you post that list for the 70 and 71? When I can get back over there I'll pull the valve cover and see. It has ram horn manifolds on it now, but they may have just used them for clearance.
yeah, I've done a few with manifolds back in the day. That's a good manifold for the swap> here you go: 1970 Z28 Engine - LT1 360hp (gross) <TABLE><TBODY><TR><TD></TD><TD>Casting # </TD><TD>GM P/N</TD><TD>Description</TD></TR><TR><TD>Block</TD><TD>3970010</TD><TD></TD><TD>4 bolt main, suffix codes: CTB, CTC </TD></TR><TR><TD>Crankshaft</TD><TD>330550</TD><TD></TD><TD>Forged steel</TD></TR><TR><TD>Heads</TD><TD>3927186</TD><TD></TD><TD>63.995 cc, 2.02/1.6 valves, screw in studs & guide plates </TD></TR><TR><TD>Cam</TD><TD>3972182</TD><TD>3972178</TD><TD>symbol: (1) square Solid lifter - 0.458(I)/0.484(E) lift, 317I/346E duration</TD></TR><TR><TD>Pistons</TD><TD></TD><TD></TD><TD>Domed type - yields 11.0:1 compression </TD></TR><TR><TD>Intake</TD><TD>3972110</TD><TD></TD><TD></TD></TR><TR><TD>Carb (A/T)</TD><TD></TD><TD>3972120</TD><TD>Holley List 4490, 780cfm , 4150 series - 4BBL</TD></TR><TR><TD>Carb (A/T)</TD><TD></TD><TD>3972122</TD><TD>Holley List 4554, 780cfm , 4150 series - 4BBL w/NB2 (Calif)</TD></TR><TR><TD>Carb (M/T)</TD><TD></TD><TD>3972121</TD><TD>Holley List 4555, 780cfm , 4150 series - 4BBL</TD></TR><TR><TD>Carb (M/T)</TD><TD></TD><TD>3972123</TD><TD>Holley List 4489, 780cfm , 4150 series - 4BBL w/NB2 (Calif)</TD></TR><TR><TD>LH Exhaust</TD><TD>3942527 </TD><TD></TD><TD>2.026", Rear Outlet, AIR </TD></TR><TR><TD>RH Exhaust</TD><TD>3946826 </TD><TD></TD><TD>1.96", Rear Outlet, AIR </TD></TR><TR><TD>Distributor</TD><TD></TD><TD>1112019</TD><TD>single point w/RFI </TD></TR></TBODY></TABLE>Alternator: Delcotron 37 Amp, part # 1100837 Water Pump: 3953692 crank pulley: 9956668 coded CG Deep Groove Water Pump Pulley: 3995647 coded AP Power steering Pulley: last four #'s 1105 Note: Rods: LT1 "pink" rods. 5.7", 6th design, forged steel, shot peened, magnafluxed, heat treated, high RPM rod bolts and expensive. Intake 3972116 listed as service replacement manifold. 1971 Z28 Engine - LT1 330hp (gross, 275hp NET) <TABLE><TBODY><TR><TD></TD><TD>Casting # </TD><TD>GM P/N</TD><TD>Description</TD></TR><TR><TD>Block</TD><TD>3970010</TD><TD></TD><TD>4 bolt main, suffix codes: CGP, CGR </TD></TR><TR><TD>Crankshaft</TD><TD>330550</TD><TD></TD><TD>Forged steel</TD></TR><TR><TD>Heads</TD><TD>3973487</TD><TD></TD><TD>75.47 cc, 2.02/1.6 valves, screw in studs & guide plates </TD></TR><TR><TD>Cam</TD><TD>3972182</TD><TD>3972178</TD><TD>symbol: (1) square Solid lifter - 0.458(I)/0.484(E) lift, 317I/346E duration</TD></TR><TR><TD>Pistons</TD><TD></TD><TD></TD><TD>Flat w/valve relief - yields 9.0:1 compression </TD></TR><TR><TD>Intake</TD><TD>3959594</TD><TD></TD><TD></TD></TR><TR><TD>Carb (A/T)</TD><TD></TD><TD>3989022</TD><TD>Holley List 4800, 780cfm , 4150 series - 4BBL</TD></TR><TR><TD>Carb (M/T)</TD><TD></TD><TD>3989021</TD><TD>Holley List 4801, 780cfm , 4150 series - 4BBL</TD></TR><TR><TD>LH Exhaust</TD><TD>3989041 </TD><TD></TD><TD>Rear exit, log type w/AIR, 2.026 outlet</TD></TR><TR><TD>RH Exhaust</TD><TD>3986330 </TD><TD></TD><TD>Rear exit, log type w/AIR, 1.96 outlet</TD></TR><TR><TD>Distributor</TD><TD></TD><TD>1112049</TD><TD>Manual Trans, RFI, single point w/vacuum </TD></TR><TR><TD>Distributor</TD><TD></TD><TD>1112074</TD><TD>Auto Trans, RFI, single point w/vacuum </TD></TR></TBODY></TABLE>Alternator: Delcotron 37 Amp, part # 1100837 Water Pump: 3957170
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