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Forum: Tech / General Engine
06-08-2010, 10:47 AM
Replies: 4
Views: 2,960
Posted By 87 Burb

Re: 454 piston slap...thinking about a one hole repair.

Found a used piston and rod from a Gen 5 for $40. My 454 is a Mark 4. Piston looks the same but different part numbers. Silvolite says they are both 5cc, but not sure if the weights are the same. ...
Forum: Tech / General Engine
06-07-2010, 02:30 PM
Replies: 4
Views: 2,960
Posted By 87 Burb

Re: 454 piston slap...thinking about a one hole repair.

Called my local dealer about a piston, wanted $210 for one.
Forum: Tech / General Engine
06-06-2010, 11:59 PM
Replies: 4
Views: 2,960
Posted By 87 Burb

454 piston slap...thinking about a one hole repair.

Picked up another 87 Suburban, This one has a TBI 454. Bought it for parts. Got it really cheap.

The engine runs suprisingly well. Drove it home, but...it's got what I and the previous owner...
Forum: Alternative Port EFI Intakes
04-24-2010, 09:56 PM
Replies: 60
Views: 17,626
Posted By 87 Burb

Re: So! what is the deal with the GM Ramjet?

I put my other brand new RamJet up for auction with an ECM, harness and cam. No messing around with fabbing your own crossover, and coming up with a fuel pressure regulator. Ends tomorrow if you're...
Forum: Power Adders
02-09-2008, 11:25 PM
Replies: 13
Views: 8,711
Posted By 87 Burb

Re: Turbo Motor Build: Vortec, 383, RamJet, Port Modded EBL. Compression Ratio? Cam

I'm over on the western slope, not too far from Aspen. Took the kids skiing again today. Best snow in decades.

I hear what you're saying. I really don't want the engine to be gutless off-boost....
Forum: Power Adders
02-09-2008, 03:16 AM
Replies: 35
Views: 13,926
Posted By 87 Burb

Re: Ideal Compression for Turbo

What if we approach this debate from the quantity of oxygen molecules available to combine with fuel to produce power?

More oxygen molecules means we can add more fuel, and therefore deliver...
Forum: Power Adders
02-09-2008, 03:02 AM
Replies: 13
Views: 8,711
Posted By 87 Burb

Re: Turbo Motor Build: Vortec, 383, RamJet, Port Modded EBL. Compression Ratio? Cam

Good suggestions. Thanks. If I can educate myself a bit more on the cams before I talk to these folks, I might have a more productive conversation.

I've read here on thirdgen that some of the...
Forum: Power Adders
02-01-2008, 04:55 PM
Replies: 13
Views: 8,711
Posted By 87 Burb

Re: Turbo Motor Build: Vortec, 383, RamJet, Port Modded EBL. Compression Ratio? Cam

I've got 40 hours or more over there. Takes about that long to read Marty's "Grenade" post.

Did find a few gems about turbo cams here and there. Most guys over there are looking for 1000rwhp and...
Forum: Power Adders
02-01-2008, 11:57 AM
Replies: 13
Views: 8,711
Posted By 87 Burb

Re: Turbo Motor Build: Vortec, 383, RamJet, Port Modded EBL. Compression Ratio? Cam

With the ZZ383, the magazine says they are running 9.7 CR. GM tech specs below say 9.6. Sounds like a high compression ratio to be running boost, especially with hyper pistons...
...
Forum: Power Adders
02-01-2008, 05:04 AM
Replies: 13
Views: 8,711
Posted By 87 Burb

Re: Turbo Motor Build: Vortec, 383, RamJet, Port Modded EBL. Compression Ratio? Cam

Injectors: You may be right, some say 830 some say less. Duty cycle is pretty easy to monitor with an EBL. I'll go larger if need be.

Drivetrain: You're right, the 10-bolt front axle is...
Forum: Power Adders
01-31-2008, 04:50 PM
Replies: 13
Views: 8,711
Posted By 87 Burb

Re: Turbo Motor Build: Vortec, 383, RamJet, Port Modded EBL. Compression Ratio? Cam

Yep, an NP205 would allow me to engage 4wd for more traction under boost. Then the weak link becomes the 10-bolt up front. Solution: Dana 60 with 35 spline Dana 70 stub shafts. It's just sitting...
Forum: Power Adders
01-31-2008, 03:40 PM
Replies: 13
Views: 8,711
Posted By 87 Burb

Turbo Motor Build: Vortec, 383, RamJet, Port Modded EBL. Compression Ratio? Cam?

Need some advice from some seasoned boosted engine builders.

In the process of rebuilding an '87 4-bolt 350 LO5 with a spun rod bearing. Machinist inspected and says .030 will take care of the...
Forum: Alternative Port EFI Intakes
01-29-2008, 07:59 AM
Replies: 60
Views: 17,626
Posted By 87 Burb

Re: So! what is the deal with the GM Ramjet?

I'm running a TH-400. Didn't run into the tv cable issue.
Forum: Alternative Port EFI Intakes
01-24-2008, 10:09 AM
Replies: 60
Views: 17,626
Posted By 87 Burb

Re: So! what is the deal with the GM Ramjet?

I picked up a used adjustable AEM off eBay. Just like this one, only silver:

http://www.aempower.com/ViewCategory.aspx?CategoryID=51

Came off the back of the drivers side fuel rail with a 90...
Forum: Alternative Port EFI Intakes
01-24-2008, 07:53 AM
Replies: 60
Views: 17,626
Posted By 87 Burb

Re: So! what is the deal with the GM Ramjet?

The mounting holes in the Edelbrock rails line up perfectly with the tapped mounting holes in the RamJet. I did enlarge the mounting holes in the rails about 1/16". The length of the injectors I used...
Forum: Tech / General Engine
01-20-2008, 10:47 PM
Replies: 16
Views: 5,502
Posted By 87 Burb

Re: Pistons: Forged vs. Hyper? Are forged hard to live with?

Lots of votes for forged pistons. Sounds reassuring. Other than price, are there no downsides to using forged pistons?
Forum: Alternative Port EFI Intakes
01-20-2008, 07:39 PM
Replies: 60
Views: 17,626
Posted By 87 Burb

Re: So! what is the deal with the GM Ramjet?

You won't need to fab custom rails. Get the Edelbrock rails for Vortec heads (Part #3631), they'll run you about $80. I started with a bare RamJet and these rails work great.
Forum: Tech / General Engine
01-20-2008, 04:31 PM
Replies: 16
Views: 5,502
Posted By 87 Burb

Re: Pistons: Forged vs. Hyper? Are forged hard to live with?

KrisW: Which forged pistons were you using?

Here's why I ask:

Talking to a local engine builder about the SRP 5.7 rod 31cc inverted domes for a Vortec 383 which would put me at 8.5 to 1. He...
Forum: Tech / General Engine
01-20-2008, 04:13 PM
Replies: 16
Views: 5,502
Posted By 87 Burb

Pistons: Forged vs. Hyper? Are forged hard to live with?

Getting ready to redo a bottom end. Might see some boost down the road. Looking at forged pistons and wondering if they are difficult to live with.

From what I gather, forged are loose in the...
Forum: DIY PROM
01-20-2008, 11:47 AM
Replies: 10
Views: 6,188
Posted By 87 Burb

Re: MEFI 4 definition files?

These would be the iron headed LT1s in the Impalas and Caprices? That's an interesting idea. If I understand the history of the Vortec heads correctly, Vortecs are basically the iron LT1 heads...
Forum: DIY PROM
01-20-2008, 03:00 AM
Replies: 10
Views: 6,188
Posted By 87 Burb

Re: MEFI 4 definition files?

Good suggestion...as a matter of fact I am running the L31 spark table. Problem is, it hits the wall at 4000 rpm and the exhaust manifolds start glowing red - apparently not enough spark advance....
Forum: DIY PROM
01-20-2008, 02:02 AM
Replies: 10
Views: 6,188
Posted By 87 Burb

Re: MEFI 4 definition files?

It looks like they've got them, but they've locked them away in a library for users of their products only. You've got to email their sales department with a request.

Looks like you could get...
Forum: Tech / General Engine
08-22-2007, 10:10 AM
Replies: 3
Views: 1,765
Posted By 87 Burb

Re: Cam swap, now no oil to passenger rocker arms. Any ideas?

Whew! I think you're right. I'm using a Mr. Gasket 3795 primer. It's pretty narrow and does allow oil to come up the distributor hole. Sounds like I should be using one more like a Proform 66896 that...
Forum: Tech / General Engine
08-22-2007, 02:18 AM
Replies: 3
Views: 1,765
Posted By 87 Burb

Cam swap, now no oil to passenger rocker arms. Any ideas?

In the process of converting an '87 TBI truck engine from hydraulic flat tappets to hydraulic rollers. New heads, cam, lifters, pushrods and rockers.

Installed everything, no manifold, no valve...
Forum: Miscellaneous Third Gen Items!
04-23-2007, 11:09 AM
Replies: 2
Views: 726
Posted By 87 Burb

Re: Ostrich For Sale

If you still have it, I'll take it.
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