99 Denali

[95escahoe]

One thing at a time, right? Can't get overwhelmed. Happened to me too. I heard MSD's aren't that great, along with accel's , and all that other over rated, over priced stuff. Heard that Taylor's are top notch. Beat out all the other wires. Those are what I'm gonna get for the Hoe. You're slowly getting there my friend!

X2 on the Taylor wires


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[Snowbound]

One thing at a time, right? Can't get overwhelmed. Happened to me too. I heard MSD's aren't that great, along with accel's , and all that other over rated, over priced stuff. Heard that Taylor's are top notch. Beat out all the other wires. Those are what I'm gonna get for the Hoe. You're slowly getting there my friend!

I've heard good things about Taylor wires too. Speed shop doesn't have them for the Vortec in stock and personally, I've had zero issues running these 8.5mm MSD wires. Ohm testing aside, I'd bet nobody would know the difference. If someone swapped my MSD's while I was sleeping with stock AC Delco's I wouldn't be half way to work and say, "hey, someone changed my wires. I can feel it." Haha. But I would know if someone was in my garage. In all seriousness, I've only run these because it's what they stock for my truck and I try to buy local whenever possible. They usually match prices if I tell them I can get it cheaper elsewhere. They are always cheaper than Summit or Jegs and part is in my hand same day or next if they have to order it. I'm rambling, like I'm trying to defend my wires. I'm not. I don't usually buy into brand hype either.

 

[Tonyrodz]

I've heard good things about Taylor wires too. Speed shop doesn't have them for the Vortec in stock and personally, I've had zero issues running these 8.5mm MSD wires. Ohm testing aside, I'd bet nobody would know the difference. If someone swapped my MSD's while I was sleeping with stock AC Delco's I wouldn't be half way to work and say, "hey, someone changed my wires. I can feel it." Haha. But I would know if someone was in my garage. In all seriousness, I've only run these because it's what they stock for my truck and I try to buy local whenever possible. They usually match prices if I tell them I can get it cheaper elsewhere. They are always cheaper than Summit or Jegs and part is in my hand same day or next if they have to order it. I'm rambling, like I'm trying to defend my wires. I'm not. I don't usually buy into brand hype either.

I hear ya. I like the idea of the shop doing up your heads-- forgot to mention that before. Might as well, while it's apart too. Did the heads in my GN. Cleaned them up and did the valves. Might as well, right? Also-- bought the car and it had 10 mm msd's, mechanic put 7's or 8's on, can't remember, but no difference that I can notice.

 

[Snowbound]

I hear ya. I like the idea of the shop doing up your heads-- forgot to mention that before. Might as well, while it's apart too. Did the heads in my GN. Cleaned them up and did the valves. Might as well, right? Also-- bought the car and it had 10 mm msd's, mechanic put 7's or 8's on, can't remember, but no difference that I can notice.

Man, you HAD a GN? I had a chance to buy one back in '01 and I'm kicking myself I didn't. That's one vehicle that I've always wanted. But even back then being an 87 the interest rate was a little higher than I wanted to pay. Can't believe I let it go for 2.5 points higher in interest. At the time I thought I was making the right decision, now I can't find em unmolested for a reasonable price. 2 vehicles I want before I die, 87 GN and Hummer H1 Alpha. Probably won't see either but it's good to have dreams.

And heads aren't getting a lot of work. Just a good polishing on top of small porting. I could have changed springs myself but since he'll have them off anyway I figure might as well. That way he can set heights and pressures with proper springs. Just one less thing on my list other than another check to write.

 

[Tonyrodz]

Man, you HAD a GN? I had a chance to buy one back in '01 and I'm kicking myself I didn't. That's one vehicle that I've always wanted. But even back then being an 87 the interest rate was a little higher than I wanted to pay. Can't believe I let it go for 2.5 points higher in interest. At the time I thought I was making the right decision, now I can't find em unmolested for a reasonable price. 2 vehicles I want before I die, 87 GN and Hummer H1 Alpha. Probably won't see either but it's good to have dreams.

And heads aren't getting a lot of work. Just a good polishing on top of small porting. I could have changed springs myself but since he'll have them off anyway I figure might as well. That way he can set heights and pressures with proper springs. Just one less thing on my list other than another check to write.

I still have it. Longest vehicle I've ever had! Had it since 95. Traded my 92 Typhoon for it. I have a love hate relationship with the car-- I love to hate it!! What's a Hummer Alpha?
My GN , it's an 87

 

[Snowbound]

Love it Tonyrodz!! Looks like you kept original wheels, even better. I'm jealous.

Hummer H1 Alpha is an H1 but the newest civilian version uploaded ones made. LTZ models if you will. Instead of the 6.5 turtle diesel it has a Duramax/Allison. I've looked at a few but I couldn't pull the trigger on a vehicle that costs more than my house.

 

[95escahoe]

I still have it. Longest vehicle I've ever had! Had it since 95. Traded my 92 Typhoon for it. I have a love hate relationship with the car-- I love to hate it!! What's a Hummer Alpha?
My GN , it's an 87View attachment 71978

Badass GN looks really clean, sucks you had to get rid of the Typhoon those are pretty sick too


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[Snowbound]

Well I thought for sure someone would have noticed, but never said anything. This marine intake I have is not from a Mercruiser, it's from a Pento/Volvo marine engine. Still a GM 5.7 but has a different throttle body. Way different.

Mercruiser marine intake



Pento/Volvo marine intake



Reason I ended up with this one is because I couldn't find a mercruiser unit. Figured at the very most I would have to replace the upper intake. Merc units go for $500-900 used, I was lucky and got this one for $460. Throttle body bolt pattern doesn't line up to any throttle body that I can find. I was originally going to make a plate from stainless that would bolt to this intake and then weld a stainless 90* elbow to it. Off the front of the 90 I would have put another plate with a 4bolt LS throttle body bolted to it. Instead I devised another plan.

 

[Snowbound]

So this is how I fixed my issue.

I made a template of the opening.



I found a 4 bolt to 3 bolt throttle body adapter so I can use my current TB. Marked the holes and drilled them out to 15/64". Then used a 27/64" to counter sink allen bolts.







Worked out perfectly. If it hadn't I would have had to spend $398 on a new upper because I couldn't find one used. Full flow bore so there's no restriction from this conversion.



What you see on the inside bore is the worthless throttle body spacer. I can open it up but doubt it really restricts anything. It more like swirls the incoming air. Pointless really but I doubt I'll spend the time smoothing it out. I wanna use it because if you look at the pic of adapter plate on intake you can see the machined in passage way for the idle air circuit. I'm gonna take some material off the bottom of the TB spacer to open that passage way up some. In stock form that passage goes right into intake unrestricted. I need it to flow better and I can accomplish that by opening spacer and not have to do any other modification.

So I'm happy I got past this obstacle fairly easy. On to repairing header right now and welding in wide band O2 sensor bung. I'll post up when I'm past that. For the meantime, I'm not bolting on a turbo. I'm doing the cam, front cover and getting this thing running again to get base tune ironed out before adding forced air. Besides, I don't want to break the bank right now. I ordered intercooler, charge pipes and turbo headers. I'll get turbo after 4L80E/14 bolt swap. I need to modify headers to make work and that much power will only make this trans give up the ghost. Right now I can sell this trans to offset some cost on trans swap. Heads are at machine shop and I have a bunch more to do before I can make this thing run anyway.

 

[Tonyrodz]

Wow! Awesome work. I can't wait to see it get done! On the Buick GN forums, there's an area that guys have turbo'd Ls motors. Maybe you can check it out. Get some ideas or answers to some questions.