Z Code 400 – Great information, but I don’t feel like typing that much. Below are summaries of the 400’s I have run.
’64 Tempest Race only (still in car) – 10.71 at 124
’68 4-bolt main 400
Stock crank turned 10/10 with Crower Sportsman forged rods
Ross pistons, 9.9:1 compression ratio
Bored 0.060 to 4.180
E-heads that flow about 315 cfm
271/278 solid roller, 106 LSA installed at 102
1 7/8” headers, T-400 with 4200 stall
4.56 spool (now 4.10’s) in ’68 Chevelle 12-bolt
Victor and 4500 Dominator
Slicks were 28x10.5 and are now 29x11
’64 GTO Streetcar (many years ago as it got upgraded to a 428) – 12.20 at 114
’68 2-bolt main 400
Stock crank turned 10/10 with ’73 SD forged rods
TRW pistons, 10.5:1 compression
Bored 0.030”
670 heads with mild porting
1 ¾” headers
244/252 hydraulic cam, 110 LSA installed at 108
4.33 posi in ’66 Chevelle 12-bolt
’66 Tri-Power
29.5x9 slicks
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