posted
We purchased a 400 small block for installation in our car. The engine is brand new and fully assembled. Yesterday my wife and I pulled all the main caps and rod caps to confirm bearing clearances and were shocked to see 030 stamped on the back of each bearing shell. I thought a crank turned any more than .010"/.010" was unsuitable for performance use. I think that the main journals on the 400 are larger than the other small block Chevies, but can I use this crank? Also, is .0018" too tight on the mains?
Thanks for your help. We are new to this bottom end stuff.
-------------------- 1986 Buick Regal T-Type TE-44, .030" TRW's, ATR camshaft, downpipe, external wastegate, ram air, and exhaust, 42.5 lb injectors, Lubrant chips, custom converter by Alan, hot-wired Walbro 340, GNX wheels, and the whole METCO catalog
1987 Buick Regal Turbo T 'Old Gray' GM Hi-Tech Magazine's project car New Ron Joseph bullet, Stage 5 60-1, 50 lb MSD injectors, DeQuick intercooler, Level 10 trans and 9" lock-up converter, more to follow...
2002 Camaro SS Sebring Silver with ebony leather, hardtop, six speed...scheduled to arrive next week. METCO LCA's, bolt-in driveshaft loop and CAGS eliminator waiting...
-------------------- 1986 Buick Regal T-Type TE-44, .030" TRW's, ATR camshaft, downpipe, external wastegate, ram air, and exhaust, 42.5 lb injectors, Lubrant chips, custom converter by Alan, hot-wired Walbro 340, GNX wheels, and the whole METCO catalog
1987 Buick Regal Turbo T 'Old Gray' GM Hi-Tech Magazine's project car New Ron Joseph bullet, Stage 5 60-1, 50 lb MSD injectors, DeQuick intercooler, Level 10 trans and 9" lock-up converter, more to follow...
2002 Camaro SS Sebring Silver with ebony leather, hardtop, six speed...scheduled to arrive next week. METCO LCA's, bolt-in driveshaft loop and CAGS eliminator waiting... Posts: 5 | From: Cleveland, TN | Registered: Nov 2001
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