.030" overbore should solve everything. If not, then .060" will surely take care of it. I probably would have bored anyway.That could turn out to be a nasty mess, or it could become a good rebuilder. I hope it comes apart ok.
IT will be fun to watch progress, if you allow us to follow along.
Computer? Where we're going, we don't NEED computers.have the head shaved a tiny bit too, bump the compression ratio a tiny bit won't hurt the computer as long as you keep it at or below 9,5 to 1.
Indeed. I have no intention of going there. I will keep LSA above 112 degrees and limit myself to about 220 degrees of duration at .050" lift. The problem--opposite of what I am used to dealing with--is choosing ONE cam out of many that fit those parameters. I am used to having one cam to choose at best, and now I am overrun with selection.Yes... high compression, high rpm horsepower, wild cams... not ideal for a family hauler.
In fact.. a mild cam will yield possibly more low-midrange torque.. necessary to accelerate and move a van in it's normal operating range.
For this one, at least to begin, I don't want to lose sight of the shore. So I'm going to protect the connectors with some dielectric grease and tuck them away in case I want to go back to the TBI V6, or just TBI.As far as computers... I cut out a lot of wiring when I removed my computer permanently.. and have never looked back. I literally have 1 switched 12v wire to the HEI distributor to run the entire engine.. that's it. When I turn the key.. it's always 100% ready to go!
So do I! Really, I don't think it will be that bad. Certainly it will need a bore, but I think .030" will take care of it. Worst case is that it will take .060".I hope that rust in you cylinders didn't ruin the bores.
Right, and this isn't a show car or a toy that costs me an afternoon if it breaks down. This is the family truckster that is going to see long road trip use with wife and baby inside almost every mile. It MUST MUST MUST be reliable--at least as reliable as a factory vehicle in a good state of tune.A friend of mine (in his high-end classic custom show Camaro) spent the past year enduring a nightmare with 2 aftermarket FI units.. both FAILED and left him on side of road getting tow home each time. Despite professional engine builder installation, the product itself failed. When the 2nd unit failed (which he bought directly from FiTech).. they told him it would be 6-8 weeks to replace the defective unit. They offered NO solution when he asked what he was supposed to do for the next 2 months.
That is also true. The factory TBI has probably millions of dollars of engineering and testing behind it with drivability engineers nitpicking it to death before it was released, and the aftermarket systems probably have thousands of dollars of engineering and testing, with maybe not much more than a wet thumb in the wind to reliability and drivability.Of course you don't have to go aftermarket either, always can keep it rock solid OEM and still have the benefits of FI. All going to depend on what you want to do.
I wasn't picking up on that. Yes, flowing the air through the TB isn't as much an issue as flowing the fuel through the injectors.I wasn't saying TBI, though a single ported TBI could be used for 600+cfm/400hp. Holley has a 670cfm version Holley 502-9: Replacement 670 cfm TBI 1990-95 GM 5.7L V8 truck - JEGS High Performance so it's definitely possible.
Everything that you have said is unfamiliar to me. Judging from some quick googling, it seems that the 0411 ECU is for a Gen III engine. This is somehow being used on the CPI (L31) harness, with the addition of wires for pulsed injectors? I have wondered about swapping complete engine management from a Gen III engine since it is so hackable, but I know nothing about what you are suggesting. Excuse me if I am way off, but I don't know what I don't know.I would be thinking more along the lines of the L31 FI with a 0411 computer that you can tune using free software.
The 0411 PCM was used with a bunch of engines which makes it extremely popular, like a lot of engines/configs, 4.3/5.0/5.7/4.8/5.3/6.0/etc. So you could grab whatever you don't have, like the intake/injectors/wiring harness/PCM etc from the junkyard, for example an 01-03 Express, trucks had them, camaros, vettes had them. That would give you a complete factory proven SCPI/MPFI setup for your engine. Then you can use PCM Hammer and Tunerpro with a cheap adapter to adjust the tuning to your modifications without having to spend a dime on software/vin licensing/etc.I wasn't picking up on that. Yes, flowing the air through the TB isn't as much an issue as flowing the fuel through the injectors.
Everything that you have said is unfamiliar to me. Judging from some quick googling, it seems that the 0411 ECU is for a Gen III engine. This is somehow being used on the CPI (L31) harness, with the addition of wires for pulsed injectors? I have wondered about swapping complete engine management from a Gen III engine since it is so hackable, but I know nothing about what you are suggesting. Excuse me if I am way off, but I don't know what I don't know.