After much excitement and anticipation, I got my camaro back today having had the 305 removed and a freshly rebuilt 350 (.040 over) installed- only to discover LESS power to the wheels. I'm not sure what the problem is, but I think I can say that I definately have less power now then when I had the 305 (b4 it blew up). In addition, it stalled at low idle today in a parking lot. Something is definately out of tune.
My theories:
#1- I know they kept the 305 induction, this produces a '91 350 engine with a TBI system off my original 305. From what I can tell, there never was a combination of 350/TBI for those years, they were all TPI.
#2- Despite running fairly smoothly (at least it sounds smooth), the computer or chip remains that of the original 305 as well, Can someone confirm if all the electronic controls were compatable?
#3- The cam or other timing parts such as a distributor, may not match up.
this engine has remanufactured heads, timing chain, block, new pistons, rings, water pump, thermostat, etc., etc., etc. I p;an to update the Eprom when I get the chance. Any ideas on what's holding back the power in my 350? Thanks for any help! Especially things to look out for (or test)! I was going to get SFC's to deal with the added torque and power, but if this is all I get then forget it! Thanks again!
-Kevin

 

Post this on the TBI board and you will get more responses. The comp thinks you have a stock 305 in their, get a chip

 

my 87 has the stock 305 chip in it, and it's got a 89 350 in it now. it's never stalled on me. i tried the chip from the 89 and it wouldnt start. and then again, the 89 had an automatic in it, and the 87 still has the stock t-5.

sunbound

 

What I would do if i was in your situation is I would put in a carburator and eliminate the computer. Eliminating the computer is easy as 1-2-3.

------------------
Big 454 72 Chevy Nova
383 86 Camaro Z28

[This message has been edited by Big454blockchevy (edited March 12, 2001).]

 

Well... maybe...

1. - New manifold
2. - Carburetor
3. - Fuel Pressure Regulator to lower the tbi's 6-9 (?)PSI so it would be suitable for a carb.
4. - A non-computer controlled distributor.. on the stock one the advance is controlled by the ecm, by eliminating the computere and keeping the old distributor you will have no advance which will make the car run like S**T

other than that, it should be pretty straight foreward

 

Ok it's easy as 1-2-3- and 4.

------------------
Big 454 72 Chevy Nova
383 86 Camaro Z28