anyone turbocharged their TBI? what are you using for a TBI hat?

[stackz]

didnt think about that. so something like a boost-a-pump would probably work.

[In-Tech]

Hello,
A "boost-a-pump" increases the flow, the pressure has to rise at least 1:1 vs. Meaning if base pressure is 12, at 10 lbs boost the fuel pressure needs to be 22 to maintain the flow. Any boost will push push back on the injector, reducing flow...hence the need for boost compensating regulator. If hooked to a vacuum/boost port, the pressure will reduce when in vacuum and VE table will have to be adjusted. Otherwise you can use a one way check valve just for boost, it will need a small "leak" so it doesn't work in vacuum.

[stackz]

so a fmu so a rising rate fmu then

[In-Tech]

If iirc a fmu is about 1.25:1
Your real struggle will be to find large enough injectors for the TBI. There was a time I had to use BBC 75's @ 12lb injectors and then use a 3:1 regulator. Figure out your hp requirement and then adjust accordingly.

[stackz]

it shouldnt be much honestly. I think the 454 injectors will be able to handle it.

everything is going on a 59 chevy 235 inline six. will probably only run 5 or so pounds so I dont shatter the bottom end hah.

[In-Tech]

Ok, cool
Sounds like you have a grasp on the struggles ahead :)

[stackz]

yeah, step one has been parts collection and research.

step two will be getting it on the truck and get it tuned n/a

step three will then be to toss the turbo on it and try not to scatter the bottom end hah.

[Fast355]

it shouldnt be much honestly. I think the 454 injectors will be able to handle it.

everything is going on a 59 chevy 235 inline six. will probably only run 5 or so pounds so I dont shatter the bottom end hah.

Sounds like a fun build. I want to put a late 90s to early 2000s 4100 MPFI into an older 30s GM truck myself and turbo it. That was a factory port injected 250 I6 using a TPI like manifold with a MAF based ECM, with an OEM split exhaust manifold and factory serpentine belt system. I drove one in a 1999 Tahoe with the factory 5spd and it was a strong runner in the heavy 4 door Tahoe.

[stackz]

Sounds like a fun build. I want to put a late 90s to early 2000s 4100 MPFI into an older 30s GM truck myself and turbo it. That was a factory port injected 250 I6 using a TPI like manifold with a MAF based ECM, with an OEM split exhaust manifold and factory serpentine belt system. I drove one in a 1999 Tahoe with the factory 5spd and it was a strong runner in the heavy 4 door Tahoe.

yeah I wish the 250 stuff was compatible with this engine honestly but alas, nothing interchanges. I am going to see about the toyota 1F and 2F head though. I already have the HEI distributor for this engine and its actually an HEI for a 1F engine lol. lots of stovebolters use it. my friend has a 2F head sitting in his garage that I'm going to borrow along with the head gasket and match it all up to my spare 235 head just for giggles. I know I would have to modify the oil feed to the rocker assemblies but that doesnt bother me. I just want to see how well it matches up to the block and all. it would be nice to have a better flowing head on this old girl.

but first priority is getting the HEI on, and then getting the TBI on so the ignition and fueling is all modern and working. then I'll play around with stupid stuff.