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  1. Daveo91Burb

    383 Vortec/TBI Build Thread

    Bummer about the Patriots - they look nice. I had some exhaust issues with the Vortecs on my Vette too. I used the original rams horn manifolds, but those manifolds have weird casting bumps that interfere with the valve cover placement on vortecs. I had to grind off the bumps to get the valve...
  2. Daveo91Burb

    383 Vortec/TBI Build Thread

    The Proto/Stanley socket came today, very impressed, made in the good ol' US of A! And it fits inside the Comp rocker with room to spare. Sent from my iPhone using Tapatalk
  3. Daveo91Burb

    fuel pump access panel TBI Suburban

    The pump came today. Just need to find time to do it now! Sent from my iPhone using Tapatalk
  4. Daveo91Burb

    fuel pump access panel TBI Suburban

    Perfect, thanks! Helpful info on where to cut and how to re-secure. Didn't get to it this weekend. Hopefully next....
  5. Daveo91Burb

    fuel pump access panel TBI Suburban

    Thanks, all - just what I was looking for. The pump isn't supposed to show up till Monday, but if I have time I may cut the access and engineer the replacement panel this weekend. Got to install my pressure gauge and adapter on the fuel line at the throttle body, too.
  6. Daveo91Burb

    fuel pump access panel TBI Suburban

    Cool. When I do it I'll post pics. Wish I knew for sure where to start cutting though! Anyone? Anyone?
  7. Daveo91Burb

    fuel pump access panel TBI Suburban

    Has anyone done this? Any pitfalls I should know of? Is the pump right in the middle of the tank? My plan is to bolt on two pieces of angle iron for a support and then weld on nuts on the bottom of those angles to allow big round head slotted screws to secure the cut out panel. Then I'd...
  8. Daveo91Burb

    Electronic/HEI conversion

    One of the 100 or so nameless vendors on eBay. They all offer pretty much the same piece AFAIK. This was more than 10 years ago though.
  9. Daveo91Burb

    Electronic/HEI conversion

    The wiring connectors were horrible. In particular the main one that plugs into the underside of the cap (primary wiring to the coil). Other than that, I guess it was OK, except that the module it came with fried pretty quickly. It just wasn't a well made piece and I never trusted it.
  10. Daveo91Burb

    383 Vortec/TBI Build Thread

    In the process of buying a Walbro GCA710-2 fuel pump now, direct from Walbro's distributor. They price matched Amazon and regular shipping was still free so win win. (It will probably take longer than Amazon, but I'm in no hurry) I've also purchased a fuel pressure gauge and fuel line adapter...
  11. Daveo91Burb

    383 Vortec/TBI Build Thread

    Thanks. I've got the Stanley one in my cart on Amazon now! Interesting, the picture of the Stanley shows "Proto Professional" on the side, I think Proto was one of the top names in American tools some time ago? I didn't know Stanley bought them, at least I'm assuming that's what happened...
  12. Daveo91Burb

    Electronic/HEI conversion

    Second both of these points. (No pun intended) I've had two or three distributors in my 76 vette in the 15+ years I've owned it but the best one was the original Delco I bought it with - after I rebuilt it. Still in there now and no problems. I had all kinds of problems with the billet...
  13. Daveo91Burb

    383 Vortec/TBI Build Thread

    Thanks for the input! I've never used the Comp cams rockers, but I've used the PRW ones that are very similar if not identical and had similar problems. Mine even had the poly-locks and I still had some issues. I think I used a 3/8 socket but I had to grind the outer diameter down a bit for...
  14. Daveo91Burb

    383 Vortec/TBI Build Thread

    Thanks. Yeah, I'm pretty sure I'm going to have to go with some kind of regulator other than the one on the TBI now. Dang - those Aeromotive ones are not cheap. Although I am thinking about seeing if I can go through the process that this guy did: TBI Mods/ In other news, I called...
  15. Daveo91Burb

    383 Vortec/TBI Build Thread

    How did you determine GCA710-2 was the correct pump to use? I googled specs for it and came back with a pressure of 43 psi - seems way too high for TBI??? Did you do anything with the chip or computer? The way I understand it is if pressure is changed much from 13 psi-ish stock, need a new...
  16. Daveo91Burb

    383 Vortec/TBI Build Thread

    Parts Collection! Sent from my iPhone using Tapatalk
  17. Daveo91Burb

    383 Vortec/TBI Build Thread

    Yeah, I think you're right. I'll call them next week and get the scoop.
  18. Daveo91Burb

    383 Vortec/TBI Build Thread

    Thanks! I should have remembered to check your thread - I've seen it a few times and will definitely be accessing it when I tackle this job. Do you guys think this Amazon listing is legit? It looks just like the pic on the Summit page, but don't want to take any chances. I guess I could...
  19. Daveo91Burb

    383 Vortec/TBI Build Thread

    Possibly as you were posting this I was visiting the Walbro site and saw that same message. I'd be glad to buy directly from them, but I cannot figure out which 190 pump to buy and really can't even find any buttons to buy any 190 pumps at all. Their website leaves a little to be desired. I...
  20. Daveo91Burb

    TBI Distributor Recommendations for Roller Cam

    Yep, they'll all be either Delco or Delphi, which I think were used pretty frequently for OEM, too. Just got the Delphi magnetic pick up delivered today - looks pretty high quality although it is Hecho en Mexico, but at least it's not Hecho en China!
  21. Daveo91Burb

    383 Vortec/TBI Build Thread

    Ah thanks, Walbro is the brand I was trying to remember. I was thinking Wells, but it was definitely Walbro in the posts I read. Yeah, pretty sure you're right - '94 the BBC TBIs switched to something like 30 psi or so. I'm staying away from all that stuff, the injectors I bought are 90-93...
  22. Daveo91Burb

    TBI Distributor Recommendations for Roller Cam

    TBI distributors are a bit different than the carb HEI units. There's no vacuum can or mechanical advance - all the advance is done with the computer. So if I can keep that gear at the bottom (pretty sure I can, see above) it should be pretty simple/low buck to rebuild: magnetic pickup coil...
  23. Daveo91Burb

    TBI Distributor Recommendations for Roller Cam

    Thanks - helpful piece of advice. I cross-referenced a 1989 Caprice with 5.7 with my 1991 V2500 suburban with 5.7 on RockAuto and it came up with the exact same list of available distributors! So I think this tells me GM used the same dist regardless of whether it was roller or flat tappet...
  24. Daveo91Burb

    TBI Distributor Recommendations for Roller Cam

    Starting a separate thread for some distributor questions. I need a reliable distributor that will go in my roller cam 383 that I'm building. I have two stock TBI distributors, one that came from my '90 parts Burb and the other that's in operation in my '91 now. Should I rebuild one of them...
  25. Daveo91Burb

    383 Vortec/TBI Build Thread

    I think I've seen those recommendations too but from a physics standpoint not sure they make sense. If pressure stays the same, and no other variables change such as pipe cross section and material, bends, etc. then flow rate would also stay the same. Maybe it's a duty cycle thing, though? At...

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