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Old 03-20-2015, 02:37 PM
PLDRIVE PLDRIVE is offline
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Join Date: Jan 2008
Location: Nashville, TN
Cobra Make, Engine: Backdraft, SBF 351w (463 CI)
Posts: 272
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Default 438 SBF how much power did it make?

I would like to share the results of an engine recently built by Jim Kuntz (kuntz & Company). He sent me the results after we had had a long discussion on cylinder head runner volume, and port velocity. I will post the dyno sheet, but first take a guess on what it made??

This engine is a 438 SBF (4.100 x 4.125), 11.5 compression, and dynoed on 92 octane. All parts are off the self! This engine is being placed in a street car and will happily idle at 1100.

Induction Parts list includes Jims Victor Heads (Valves 2.15 1.6 stainless) T&D Rockers (1.7 ratio), Super Victor Stage Intake (gasket matched only), 850 QF, Solid Roller Cam 262 270 750 lift 108LS (ramps, medium aggressive) Crower Sever Duty lifters, and Moroso Vacuum Pump,

Short Block consist of Dart Block, Eagle Crank and Rods.
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