93 k1500 engine swap

[Primativesniper]

Engine in my truck went out couple months ago. I took out original 5.7 tbi and replaced with a 72 5.7 fresh rebuild with mild cam, edelbrock performer intake, and headers. I retained but replaced all original sensors along with tbi on new engine. After getting engine in truck it don't seem to idle right. Seems it may be running a little rich, it runs alright on road till I slow down then stop it idles rough then dies?? Any ideas guys? Can use and appreciate any and all ideas please???

 

[cjman250]

Engine in my truck went out couple months ago. I took out original 5.7 tbi and replaced with a 72 5.7 fresh rebuild with mild cam, edelbrock performer intake, and headers. I retained but replaced all original sensors along with tbi on new engine. After getting engine in truck it don't seem to idle right. Seems it may be running a little rich, it runs alright on road till I slow down then stop it idles rough then dies?? Any ideas guys? Can use and appreciate any and all ideas please???

did you tune the computer for the cam?

 

[Primativesniper]

How do I tune computer, I'm new to this. I'm running stock tbi, stock computer, after market intake and mild cam... Who do I talk to to properly tune my computer??

 

[Primativesniper]

Here are cam and intake specs

JEGS Performance Products 555-200004 - JEGS Performance Hydraulic Flat Tappet Camshafts Details

1957-85 Chevy 262-400

Camshaft Only

Intake Exhaust
Advertised Duration 282° 282°
Duration @ .050" 224° 224°
Valve Lift w/ 1.5 Rocker Arms 0.465 0.465
Valve Lift @ Cam 0.310 0.310
Max Lift Angle 109° 119°
Lobe Separation 114°
Cam Timing @ .050" - Opens 3° ATDC 51° BBDC
Cam Timing @ .050" - Closes 41° ABDC -7° BTDC

Edelbrock#350-3701
Performer Intake Manifold
1955-86 Small Block Chevy 262-400
4-bbl Spread Bore Carb Flange (with EGR)
50-State Legal
Idle-5500 RPM Range


What programming or prom/chip would I need to make this setup run right??

 

[cjman250]

you would have to find someone who can flash a obd1 computer or go somewhere like summit or jegs and get a premade chip or get one made

 

[Primativesniper]

How do I know what chip to get?? Should there customer service be able to properly advise me??

 

[cjman250]

i would assume so, ive never had a chip before

 

[jadaven]

http://tbichips.com/

they did mine

 

[Primativesniper]

Thank you everyone for your help.. I contacted a couple chip places including the one linked above and all whole told me that the cam I have is too big to run TBI so I will be putting a carburetor on the Engine if anyone else runs into this problem here is link how to keep 4l60e trans and run carb in place of tbi http://www.s10forum.com/forum/f10/how-to-carb-swap-and-keep-the-4l60e-461481/