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Re: 72 Ambulance engine decoding help
Also don't forget that the 4-bolt main thing is not a neccesity for a street performer engine...............just some old urban legend bragging riual with the 4 bolt factory engines.
I have read and geard that many machinists have tore down the 4 bolts only to find on occasion that the second set of bolts on the main caps had worked loose. I personaly think studs on a 2 bolt is actualy better than a stock 4 bolt set up.
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69 K-20 cloned to a 67 with front clip and some other stuff.
383 .040 over
Crane roller cam lifters and rockers ,1.6 intake ratio, Open chamber heads, 9.5-1 compression ratio, 2.02 intake valves , Edelbrock performer Air Gap manifold Carter AFB performer 750cfm, MSD ignition, SM465 NP205 4.10 gears: 
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