DavidB
1/2 ton status
What would we have to do to the TBI to run on the 383?
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.
TBI on 383?
- Thread starter DavidB
- Start date
I put a 454 throttle body on it I got at a bone yard and had a chip made by TBI chips. I used the Edelbrock intake and swapped out the fuel pump and put an adjustable fuel pressure regulator on the throttle body. Just a couple things that I did besides headers and a heated O2 sensor.
Tarey
Tarey
Col_Sanders
3/4 ton status
I have a tb from CFM Tech (Edelbrock intaake bored to match), cop car injectors, a bigger fuel pump, 18psi fuel pressure spring, and a chip from TBIChips.
You can spend $200. to have your stock throttle body bored out or check the bone yards for the 454 one for about $125. to $150.
I did bore my edelbrock intake to 2in. to match the 454 throttle body, easy to do your self, I'll have to post how I did it.
Tarey
I did bore my edelbrock intake to 2in. to match the 454 throttle body, easy to do your self, I'll have to post how I did it.
Tarey
DavidB
1/2 ton status
Well, we're in a hurry to get it running again, so I think we will stick with a 350 for now.
What are approx hp/tq numbers 350 vs 383? Going in a 3500 lb rock buggy so it really doesn't need a gob of power.
Thanks
What are approx hp/tq numbers 350 vs 383? Going in a 3500 lb rock buggy so it really doesn't need a gob of power.
Thanks
If the 383 is healthy enough the 350 injectors won't give enough fuel and the engine will run lean and possibly grenade an engine over time. The air requirements are going to be greater than a 350 as well and without making the bores larger you can't get anymore air from the 350 TBI.
DavidB
1/2 ton status
That would make sense for the heavy burb. More torque to move that pig. 
We're like 1/2 that much weight.
4x4HIGH, I figured that, but I wanted to see exactly what all we would need to do. I think we've found a good 350 and don't have time to mess with the other little adjustments that would need to be made for the 383.
Let me know if you ever need a job and want to live where it's really hot in the summer, but there's lots of wheeling.
We're like 1/2 that much weight.
4x4HIGH, I figured that, but I wanted to see exactly what all we would need to do. I think we've found a good 350 and don't have time to mess with the other little adjustments that would need to be made for the 383.
Let me know if you ever need a job and want to live where it's really hot in the summer, but there's lots of wheeling.
Jason4x4
1/2 ton status
Where is that from?
Brian at TBIchips sells them. I currently have one in my 454 TBI on my HOT 350.
Jason4x4
1/2 ton status
Thanks, I'll have to give him a call.
Here is a link to one of his springs on e-bay. http://cgi.ebay.com/ebaymotors/18-p...trksidZp3286Q2em20Q2el1116QQitemZ130257590269
Jason4x4
1/2 ton status
Yea, i found that, but in the auction it says to call him before ordering. I already have the adjustable pressure reg, but the stupid thing doesn't go over 13.5psi.
Do you have a high pressure fuel pump? If not you won't be able to gain anymore pressure than that because of the stall pressure of the stock pump. I bought a 255 L/hr pump from Brian as well. IIRC that pump puts out 80psi. http://cgi.ebay.com/ebaymotors/DYNA...62QQcategoryZ33555QQihZ005QQitemZ150298452434
Jason4x4
1/2 ton status
yup, got a hp pump.
If you have a HP pump and an adjustable regulator then you just need the 18psi spring to achieve more than 13.5psi. I know because i did the same thing hoping i could get more pressure with the stock spring given i had the HP pump.
Jason4x4
1/2 ton status
cool, then I guess I will order it, no need to clarify with him.
What are the specs on your engine?
Oh, now that we have completely hi-jacked DavidB's thread we should leave this to PM's or start a new thread.
Oh, now that we have completely hi-jacked DavidB's thread we should leave this to PM's or start a new thread.
DavidB
1/2 ton status
What are the specs on your engine?
Oh, now that we have completely hi-jacked DavidB's thread we should leave this to PM's or start a new thread.
Hey so would the TBI work stock at least temporarily on the 383? Stock air, stock fuel...shouldn't get lean, just wouldn't be using the full potential of the engine...right?
Who's a good TBI company I can talk to?
Hey so would the TBI work stock at least temporarily on the 383? Stock air, stock fuel...shouldn't get lean, just wouldn't be using the full potential of the engine...right?
Who's a good TBI company I can talk to?
Yes and no. A 383 is going to require a chip burn or it's going to run lean no matter what. Yes the engine will start and run but you're potentially going to hurt the engine.
