LTx Cam Fuel Lobes

LT1    5.7mm     .224
LT4    6.0mm     .236   (5.25%)
10%   6.27mm   .247
14%   6.5mm     .256
32%   7.52mm   .296
38%   7.85mm   .309

33.25%   7.595mm   .299  <— pump installed with (2) gaskets (.020)

Lash Caps
     Comp Cams   .080
     GM LS7          .060

HPFP GM Gasket   .010

LT4 HPFP is 7mm taller than LT1 pump