Recent content by shovelhead90*

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    Anybody here running LT1 injection on Vortec heads?

    My head specialist called today to tell me that he had matched the ports and moved the bolt holes in the heads to match the intake. I drove down to look them over and the stuff looks fantastic!! The heads were opened up even more than what the pics in the album show. He has decided that he...
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    4L80E no TCC some weird symptoms

    I'll try to borrow a descent scanner next week and see what I can see.
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    4L80E no TCC some weird symptoms

    It's a '97 C3500 454 extended cab dually. The distributor is a new, (late December, 2012 install) Delphi unit as is the MAP sensor. The truck stopped going into lockup in late Nov. of last year. It's not eratic. It doesn't lock up unless I shut down the engine while coasting and then restart. It...
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    4L80E no TCC some weird symptoms

    Mine stays in OD and when the clutch is applied doesn't feel like it's slipping. The TCC on the '97s is Pulse Width Modulated and supposedly never completely locks up, so I can't just put a switch on it. That would cause the TCC solenoid to fail in short order.
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    Anybody here running LT1 injection on Vortec heads?

    I put some more photos on the album. The one that jumps out at me is the comparison of the LT1 intake to a Victor Jr. Those ports on the LT1 are huge by comparison. Man! I was suprised!! Y'all take a look!!
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    4L80E no TCC some weird symptoms

    I've searched for something similar to the symptoms I've encountered. My Torque converter clutch has for the most part quit working. I say for the most part, because I've discovered a crazy twist in the last couple of weeks. First I had a run problem with the engine several weeks ago. All of...
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    Anybody here running LT1 injection on Vortec heads?

    I stumbled onto the Chevy Thunder website the other day. MAN!! There's a lot of useful information over there!! In mu quest to get the Optispark unit set up I contacted Leonard Sparks, the sites producer and EFI guru. What a helpful guy! I asked him about the timing marks and indexing of the...
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    4l80e problems

    I had this problem with my '97 454 truck after an engine out maintainance event. Turned out to be the shift solenoids had failed. A little over $60.00 and an hour's labor changing them and it has worked well for another three years and untold miles. I just picked up a problem with the lock-up...
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    Anybody here running LT1 injection on Vortec heads?

    Yeah, my dad had one like this when I was a kid. We plowed snow with it. He always wanted the dual wheel rear end, so it was the first change I made. I've figured out how to get the pics into an album, but not being computer literate, I haven't figured how to get them into the thread. I'll...
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    Anybody here running LT1 injection on Vortec heads?

    Thanks for the heads up on the fittings. I've got that settup on my '97 big block truck and I've never had any issues with it. I didn't know until I bought the Caprice that they were a common item. Beats hunting around the junk yards or going aftermarket. I did put up some pics in an album...
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    Anybody here running LT1 injection on Vortec heads?

    I stuck a few pics in an album over on my profile. There are a bunch more that I have to rerteive and some I'll need to retake so they are worth looking at. Jimmy Bridges, my cylinder head specialist, threatened me with death and dismemberment if I didn't let his shop do the port match and...
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    Anybody here running LT1 injection on Vortec heads?

    I made some serious progress this last weekend. I got my donor car, a '96 9C1 Caprice, disassembled and the harness and sensors removed and sorted out. The car had a brand new radiator and several other new peices that I plan to incorporate into the Jeep build. I had planned to add a couple of...
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    Anybody here running LT1 injection on Vortec heads?

    You're right. This started life as a straight up stone age carb and distributor project, keeping it farmboy simple and trying to make great fuel mileage and lots of torque. The fuel injection idea crept into the plan when I spotted a FIRST TPI set-up at a car show and asked the owner about it...
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    Anybody here running LT1 injection on Vortec heads?

    As I said, the RHS Vortec heads don't share a lot of characteristics with the GM versions. The intake side of the head more closely resembles that of a well ported double hump fuelie head. It has a dual bolt patern and is designed to work with Gen I blocks. I guess when the pics get gatherted...
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    Anybody here running LT1 injection on Vortec heads?

    The ports line up fairly well. Some port matching is necessary to obtain optimum flow. The two middle bolts on each side of the intake are different than those on the heads, but there is room on the intake surface of the heads to drill and tap without any other work required. The RHS Vortec...
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