GM ECM Or Stock for 4.7 Stroker....

Performance mods and Advanced Stroker discussion.
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vernors
Posts: 8
Joined: November 11th, 2019, 11:36 am
Vehicle Year: 1988
Vehicle Make: jeep
Vehicle Model: wrangler

GM ECM Or Stock for 4.7 Stroker....

Post by vernors »

Hi,

Just completed 4.7 stroker with following parts:

HESCO MPFI, 1994 ECU
7120 Head, port matched to exhaust and intake
2000+ Intake
Roll Master Timing Chain
4.2 Crank
4.0 connecting rods
4.0 Renix Block
Keith Black KB424 +0.060" bore pistons
Bishop Buehl Racing/ CompCams 68-235-4
Bishop Buehl Racing valve springs
Victor Reins.043" head gasket
0 deck quench
Meling High Flow Oil Pump
Ford Cobra 24 lb injectors
Holley Adjustable Pressure Fuel Regulator
62 mm Throttle body

jCC'd the head and it's 57.6 cc's.

Static Compression: 9.26/1
Dynamic Compression: 7.8/1
Intake valve closing angle: 58

Considering going with GM ECM (#1227727) and using TunerPro to make adjustments.....although, I don't know if its worth it vs staying with stock ECM and adding adjustable MAP.

The engine runs pretty smooth and starts well, but I wonder if I'm leaving power on the table without specific tuning. I'm not going to add supercharger or turbo.

Thoughts?
Cummins90
I made it to triple digits!
I made it to triple digits!
Posts: 146
Joined: May 14th, 2016, 10:29 am
Vehicle Year: 1996
Vehicle Make: Jeep
Vehicle Model: Cherokee

Re: GM ECM Or Stock for 4.7 Stroker....

Post by Cummins90 »

A SBEC2 to JTEC (96-99) conversion harness can be installed then fully tuned with HP tuners. That will leave you room to grow if you decide you want to add forced induction.
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vernors
Posts: 8
Joined: November 11th, 2019, 11:36 am
Vehicle Year: 1988
Vehicle Make: jeep
Vehicle Model: wrangler

Re: GM ECM Or Stock for 4.7 Stroker....

Post by vernors »

Thanks, I'll check into this option.
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