350 v/s 305 chip (PROM)
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350 v/s 305 chip (PROM)
Is it possible to run a 350 with a 305 chip ?
I bought an ECM from a 305 TBI for my 350. ( My engine didn't came with the ECM)
Any info about what troubles should I run into will help
Thanks
I bought an ECM from a 305 TBI for my 350. ( My engine didn't came with the ECM)
Any info about what troubles should I run into will help
Thanks
Senior Member
Joined: Oct 1999
Posts: 6,621
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Car: 91 Red Sled
Axle/Gears: 10bolt Richmond 3.73 Torsen
It won't run too hot for lots of reasons. Timing, heads, valve size, injectors. The only thing that's in common is that they have 8 cylinders and are small blocks. The different bore to stroke ratio is enough to make for some serious timing troubles. If I have the time tomorrow I'll post the differences between the stock TBI 305 and 350 eproms.
If it's a near stock 350 L05 then use/get the ANLU eprom. Either call some dealers or I could burn you one for the price of the eprom and shipping. I don't do custom eproms over the e-mail unless the car is EXACTLY like mine (only know of 2 people and one is already burning his own and other went to carb).
The stock ANLU eprom is very good start for a 350 tbi. It's usually a good rule to start with something that had the same bore/stroke ratio at least. So if you stroked to a 383 then you might be looking at using something like a 305 eprom but it's SO much more complicated than that. Long story short, mild 350 TBI, use an ANLU eprom with modified tcc lock/unlock tables. Removing stuff like EGR and the speed limiter isn't a problem either.
Try out the 305 first, if you don't like, think about the ANLU.
If it's a near stock 350 L05 then use/get the ANLU eprom. Either call some dealers or I could burn you one for the price of the eprom and shipping. I don't do custom eproms over the e-mail unless the car is EXACTLY like mine (only know of 2 people and one is already burning his own and other went to carb).
The stock ANLU eprom is very good start for a 350 tbi. It's usually a good rule to start with something that had the same bore/stroke ratio at least. So if you stroked to a 383 then you might be looking at using something like a 305 eprom but it's SO much more complicated than that. Long story short, mild 350 TBI, use an ANLU eprom with modified tcc lock/unlock tables. Removing stuff like EGR and the speed limiter isn't a problem either.
Try out the 305 first, if you don't like, think about the ANLU.
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Joined: Jun 2019
Posts: 6
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Re: 350 v/s 305 chip (PROM)
It won't run too hot for lots of reasons. Timing, heads, valve size, injectors. The only thing that's in common is that they have 8 cylinders and are small blocks. The different bore to stroke ratio is enough to make for some serious timing troubles. If I have the time tomorrow I'll post the differences between the stock TBI 305 and 350 eproms.
If it's a near stock 350 L05 then use/get the ANLU eprom. Either call some dealers or I could burn you one for the price of the eprom and shipping. I don't do custom eproms over the e-mail unless the car is EXACTLY like mine (only know of 2 people and one is already burning his own and other went to carb).
The stock ANLU eprom is very good start for a 350 tbi. It's usually a good rule to start with something that had the same bore/stroke ratio at least. So if you stroked to a 383 then you might be looking at using something like a 305 eprom but it's SO much more complicated than that. Long story short, mild 350 TBI, use an ANLU eprom with modified tcc lock/unlock tables. Removing stuff like EGR and the speed limiter isn't a problem either.
Try out the 305 first, if you don't like, think about the ANLU.
If it's a near stock 350 L05 then use/get the ANLU eprom. Either call some dealers or I could burn you one for the price of the eprom and shipping. I don't do custom eproms over the e-mail unless the car is EXACTLY like mine (only know of 2 people and one is already burning his own and other went to carb).
The stock ANLU eprom is very good start for a 350 tbi. It's usually a good rule to start with something that had the same bore/stroke ratio at least. So if you stroked to a 383 then you might be looking at using something like a 305 eprom but it's SO much more complicated than that. Long story short, mild 350 TBI, use an ANLU eprom with modified tcc lock/unlock tables. Removing stuff like EGR and the speed limiter isn't a problem either.
Try out the 305 first, if you don't like, think about the ANLU.
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