350 tbi swap into 89 Firebird Hello. I have a 350 tbi engine out of a 95 chevy silverado. It looks like it should mount right up but I was wondering for any advice about anything I might need to swap over also. I have the silverado so I can take any parts I need to from it. The car the engine is going into is a 89 Firebird Formula that had a 305 tbi until heads cracked. Thank you in advance. |
Direct drop in, need to have a 350 chip tho. The 95 pcm isn't the same unless you swap the harness and pcm. Other slight differences |
I figured he has the whole motor. Lol |
Re: 350 tbi swap into 89 Firebird Yeh, I have everything. Just didn't know if factory computer would hook up |
No. Some guys were swapping the pcms into our cars in the past but I've been out of the TBI game awhile |
Re: 350 tbi swap into 89 Firebird So I swapped the engine out with the 350. I used the 305 harness and pcm. Then I used everything connected to the engine (intake, sensors) and put it in. The only thing I found is that I used the 305 tranny and it didn't take the extra power. And I found that the Alternator mount actually sat higher relative to the engine so if I stepped on it hard, the Alternator would vibrate against the hood. Since the tranny went, I went forward and bought a parts car to throw a t5 transmission into it. Now I can spin tires up through the first 3 gears. During a dry day!!! Very excited. Should anyone have any questions after I post this reply, feel free to pm me. Thanks everyone who helped and sent me a reply. |
Re: 350 tbi swap into 89 Firebird
Originally Posted by xkingcodex
(Post 5950915)
Hello. I have a 350 tbi engine out of a 95 chevy silverado. It looks like it should mount right up but I was wondering for any advice about anything I might need to swap over also. I have the silverado so I can take any parts I need to from it. The car the engine is going into is a 89 Firebird Formula that had a 305 tbi until heads cracked. Thank you in advance. |
Re: 350 tbi swap into 89 Firebird So why do you need to swap spark control module if you get a custom chip? |
Re: 350 tbi swap into 89 Firebird a chip will change your timing, advances it, which makes the engine run a bit warmer so they tell you to put in a cooler thermostat. You can also advance the timing with the engine not running, it will stay advanced. Your car shuts down at 110 mph, it's not recommended, but you can run a switched wire to the fuel pump relay, it won't shut down at 110. So what is your question about the chip? |
Re: 350 tbi swap into 89 Firebird
Originally Posted by Biggd4355
(Post 6007900)
a chip will change your timing, advances it, which makes the engine run a bit warmer so they tell you to put in a cooler thermostat. You can also advance the timing with the engine not running, it will stay advanced. Your car shuts down at 110 mph, it's not recommended, but you can run a switched wire to the fuel pump relay, it won't shut down at 110. So what is your question about the chip? |
Re: 350 tbi swap into 89 Firebird
Originally Posted by xkingcodex
(Post 6004611)
So I swapped the engine out with the 350. I used the 305 harness and pcm. Then I used everything connected to the engine (intake, sensors) and put it in. The only thing I found is that I used the 305 tranny and it didn't take the extra power. And I found that the Alternator mount actually sat higher relative to the engine so if I stepped on it hard, the Alternator would vibrate against the hood. Since the tranny went, I went forward and bought a parts car to throw a t5 transmission into it. Now I can spin tires up through the first 3 gears. During a dry day!!! Very excited. Should anyone have any questions after I post this reply, feel free to pm me. Thanks everyone who helped and sent me a reply. |
Re: 350 tbi swap into 89 Firebird That must be a hellofa truck engine!!! |
Re: 350 tbi swap into 89 Firebird I'm swapping a 88 305 TBI out for 88-89 350 TBI in an 88 IROC. So ECM is to be changed or can u get 305 upgraded? (chipped). What else to make this transition easy. I've read knock sensor. Any help would be appreciated. |
Re: 350 tbi swap into 89 Firebird
Originally Posted by HEFF16
(Post 6008095)
I'm swapping a 88 305 TBI out for 88-89 350 TBI in an 88 IROC. So ECM is to be changed or can u get 305 upgraded? (chipped). What else to make this transition easy. I've read knock sensor. Any help would be appreciated. |
Re: 350 tbi swap into 89 Firebird Solid motor mounts- or a chain to the frame on the driver side to hold it from moving! Poly mounts might keep it from hitting too. |
All times are GMT -5. The time now is 09:00 AM. |
© 2024 MH Sub I, LLC dba Internet Brands