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L67 is the code for the supercharged series II 3800. The code for the 86-87 Turbo 3.8L is LC2. These engines share the same bore and stroke, but absolutely no parts interchange. Both cranks may have rolled fillets, but they are NOT interchangeable. The series II has cross-bolted mains which...

I'd much rather have a turbo on my L67. If I were to do it, I'd modify the stock headers to make then work. The front one seems fine, the rear would have to change alot or even be replaced completely. I'd use the L67 lower intake, with the supercharger removed and a custom plenum made up to...

Yeah, I think the security system, radio, heads up and all is connected to the PCM. It would definately have to limit itself to control of the fuel and spark only. No wonder no one has these things running fast yet. :)

Hmm, well, I guess someone's gotta be the first one to do it. Might as well be me. :)

Is anyone using a FAST system on one of these yet? If so, is it acting as a fuel and spark system only whilst maintaining all of the rest of the OEM PCM's controls? TIA, -Mike

It cost me about $7500 to build one a shortblock like that. What you can actually get for it is another story though.

When I bought a new 20 bolt oil pan from GM, the entire pan was painted black, including the inside. Perhaps GM uses epoxy or urethane paint?

I wonder if adding a girdle and then pinning the caps to the girdle would help?

I've been following the GN1 cracking threads alot as I have first gen 14-bolt heads. I haven't used them yet though so I can't relate any personal experiences. From everything I have read, it seems the problem is with the outer 3 bolts on the 14-bolt heads. Perhaps torquing these even less...

Thanks. Those heads aren't mine, but they are for sale. I don't if the guy selling them has come up with a price yet. He was asking me what I thought they were worth, but I really have no idea. -Mike

What's the best way to mockup the heads on the block without destroying new head gaskets? I have GN1 "cracker" heads with 1007 locwire gaskets. I want to install the heads at the same height they will be at in the final assembly so I can place the intake on the engine and measure it for proper...

You think that's wierd Tell me what this timing contraption is: http://www.netsnapshot.com/users/6818/images/th_PJLK1MCoBQIAAEx5k6w_6818_0.jpg And these heads. These are not GN1 or M&A or Stage2: http://www.netsnapshot.com/users/6818/images/th_PJLM68CoBQIAAEyUSdQ_6818_1.jpg...

I've seen two kinds of dist drive gears. One kind that is flush where the washer goes and another kind that has a recess cut for the washer to sit in. I know someone with a few NOS dist. drive gears if anyone is looking for one. -Mike

A local guy bought out the remains of Smokey Unick's Buick race parts. These parts are mostly very old, late 70's to early 80's. There's a set of aluminum heads which look just like stockers, definately not stage heads. They have "EXP A" on them which I believe means experimental. He...

If I did stuff like that I'd be looking for a new family... I have some off-center rods, Carillo, 6.250" just resized and rebushed. You can have them for $8000 and I'll throw in a freshly built Stage-1 3.8 long block with GN-1 heads for free. :D

Re: Re: Musclemotors I don't know...$350 for six new carillo rods doesn't seem like a bad price to me.

I'm not going to rent the jig for installing the cam retainer plate. I can get the piece installed just fine...but...I am not 100% certain what the preferred orientation of the piece is. It's not marked and the instruction sheet doesn't mention anything. My concern is if I do it wrong, I...

I did some google searching and found that the LT4 starter is a popular bolt-in upgrade for Impala SS owners. The orignal Impala starters are the same as the LT1 starter which fits the Buick, so I'm taking the chance and ordered the starter and bolts from GM Parts Direct. Warning: GM Parts...

DOH! I completely forgot about the photo guide on the gnttype site. Thank you for reminding me. It has answered my questions. -Mike

GM Parts Direct has the LT4 starter for 144.77 (no core). Is this a good price? -Mike