350 chip
Senior Member
Joined: Oct 1999
Posts: 6,621
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Car: 91 Red Sled
Axle/Gears: 10bolt Richmond 3.73 Torsen
That eprom won't work with the f-body ecm. If you have TBI than you probably have an 8746 ecm (89-92) but the 7747 trucks are very similar. The only difference is the 8746 has an intake air temp sensor. When you do get a 350 you will definatly need a new chip, probably something like a cop car (89 caprice) and boast the fuel pressure if you use 55 injectors. If you use 65, cop car chip, and mild 350 it should run pretty good.
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, Jon (350 TBI!)
91 Red My website
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, Jon (350 TBI!)
91 Red My website
<font face="Verdana, Arial" size="2">Originally posted by JPrevost:
That eprom won't work with the f-body ecm. If you have TBI than you probably have an 8746 ecm (89-92) but the 7747 trucks are very similar. The only difference is the 8746 has an intake air temp sensor. When you do get a 350 you will definatly need a new chip, probably something like a cop car (89 caprice) and boast the fuel pressure if you use 55 injectors. If you use 65, cop car chip, and mild 350 it should run pretty good.
</font>
That eprom won't work with the f-body ecm. If you have TBI than you probably have an 8746 ecm (89-92) but the 7747 trucks are very similar. The only difference is the 8746 has an intake air temp sensor. When you do get a 350 you will definatly need a new chip, probably something like a cop car (89 caprice) and boast the fuel pressure if you use 55 injectors. If you use 65, cop car chip, and mild 350 it should run pretty good.
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