callaway
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6th Gear
Joined: Nov 2003
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From: somewhere nj
Re: callaway (Callaway4Fun)
Thanks for getting the thread back on track. I have no idea how things got so screwed up. I was able to get alot of info from another callaway owner. So Ive pretty much got a good idea of what thisd engine consisted of. here is the link for that owner.
http://corvetteactioncenter.net/site...gi/inside.html
http://corvetteactioncenter.net/site...gi/inside.html
Drifting
Joined: May 2002
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From: The Motor City
Re: callaway (Callaway4Fun)
I believe you might be mistaken about the microfueler on the Twin Turbos. The micro fueler was used on all TT's to control the supplemental injector in the rams horn just before the throttle body. There have been a couple of cars that had been modified and used an aftermarket fuel management system. But otherwise all TT's have a MicroFueler :auto:
Bottom line: I stand corrected.
And shaggy56, I'm glad that you were able to find the information that you wanted.
[Modified by TheCorvetteKid, 6:29 PM 11/29/2003]
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From: ...tearing up the highways, one state at a time™®©
Re: callaway (TheCorvetteKid)
Boy, did THIS discussion thread veer off topic quick. Remeber the original question?
The first Callaway twin-turbo Corvettes, back in 1987, actually used a different block than the stock L98 engine. It was a 4-bolt main block that GM was installing into some of their pickup trucks.
:cheers:
Drifting
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From: The Motor City
Re: callaway (*89x2*)
Only the first four B2K's have the truck block...
...all after that were L98's converted to 4 bolt main's, etc, and have a unique Callaway number to them (The engine pulled from say, car # 133 did not always make it back to the same unit...
With that said though, I still don't know why they used the truck blocks at all. The only possible difference I could see would be if the truck blocks where a siamesed cylinder-wall design. Anybody know the part numbers of these blocks?
But even if that where the case, if siamesed cylinder walls where of any significant importance (at this particular horsepower/output level), I'm sure that Callaway would have insisted on using those truck blocks throughout the 500 car production run.
[Modified by TheCorvetteKid, 10:28 PM 11/29/2003]
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St. Jude Donor '10
Re: callaway (TheCorvetteKid)
The turbos on the early cars where compact RotoMaster turbos - they changed to Garrat turbos in '90 (I think).
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St. Jude Donor '10
Re: callaway (TheCorvetteKid)
With that said though, I still don't know why they used the truck blocks at all. The only possible difference I could see would be if the truck blocks where a siamesed cylinder-wall design. Anybody know the part numbers of these blocks?
Safety Car
Joined: Dec 1999
Posts: 4,691
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From: Framingham MA
Re: callaway (rkessel)
254 mph? :skep:
let's see,
375 hp ZR1 goes 175.
254/175=1.45
1.45^3=3.06
3.06*375=1147 hp
or
1147/880=1.3
30% more aerodynamic then a ZR1
I say :bs
[Modified by rkessel, 9:07 PM 11/24/2003] With out a doubt the car did that MPH.!. Do a little research. :cheers:
Ok so it did, but it didn't do it with the 880 hp spec quoted. Had to be more.
let's see,
375 hp ZR1 goes 175.
254/175=1.45
1.45^3=3.06
3.06*375=1147 hp
or
1147/880=1.3
30% more aerodynamic then a ZR1
I say :bs
[Modified by rkessel, 9:07 PM 11/24/2003] With out a doubt the car did that MPH.!. Do a little research. :cheers:
Ok so it did, but it didn't do it with the 880 hp spec quoted. Had to be more.
I remember to get the top speed in the Sledge hammer, they had to duct tap some of the vents for better aerodynamics (I think the side gills, but I am going by memory of reading a magazine 13-14 years ago) With slightly better aerodynamics than a regular aerobody (it was probably lowered as well) This puts reasonable to think 880 hp will potentially be able to run 254mph.
Drifting
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From: The Motor City
Re: callaway (dgoodhue)
Again with Sledghammer? :rolleyes:
dgoodhue, Sledgehammer didn't make the 254.76mph run with 880hp. The Sledghammer had variable wastegates which the driver controlled. The engine was reportedly able to produce approximately 1200hp for brief periods (John Lingenfelter had to take advantage of the added horsepower to get to 254.76mph).
...This puts reasonable to think 880 hp will potentially be able to run 254mph.
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Drifting
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From: The Motor City
Re: callaway (SurfnSun)
The turbos on the early cars where compact RotoMaster turbos - they changed to Garrat turbos in '90 (I think).
Great post!! just a bit more help for you. The 87 model had IHI turbos, then the 88+ cars got the Rotomaster/Garrett T04b turbos. :cheers:
Great post!! just a bit more help for you. The 87 model had IHI turbos, then the 88+ cars got the Rotomaster/Garrett T04b turbos. :cheers:
Thanks again.
Safety Car
Joined: Dec 1999
Posts: 4,691
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From: Framingham MA
Re: callaway (TheCorvetteKid)
I knew about how most cars didn't get their original engines - cars and engines where mated up based on availability, and not based on serial numbers. Tthe L98 blocks have always had 4-bolt mains, but they are a straight 4-bolt design. Callaway filled the existing outside holes, then re-drilled and tapped splayed bolt holes and used GM Performance parts main bearing caps and Clevite 77 bearings.
With that said though, I still don't know why they used the truck blocks at all. The only possible difference I could see would be if the truck blocks where a siamesed cylinder-wall design. Anybody know the part numbers of these blocks?
With that said though, I still don't know why they used the truck blocks at all. The only possible difference I could see would be if the truck blocks where a siamesed cylinder-wall design. Anybody know the part numbers of these blocks?
As for the HP I have no idea really what was produced or what parts were used in that motor. Unless Callaway used a Bowtie block, I am not so sure a production SBC block would hold 1200hp.
Burning Brakes
Joined: Jun 2003
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Re: callaway (TheCorvetteKid)
How can the use of stock heads only make 7 or 7.5 compression ratio? (the heads must have been worked on somehow)
Did any one of you find the 880hp number somewhere in a magazine or online? can any one prove this number?
How much boost are both turbos producing?
I though that ANY turbo or supercharged engine could have the amount of boost regulated, maybe they adjusted the turbos to produce a higher then stock amount of Boost to reach 256 miles per hour.
Just a few questions for you guys to think about.
Did any one of you find the 880hp number somewhere in a magazine or online? can any one prove this number?
How much boost are both turbos producing?
I though that ANY turbo or supercharged engine could have the amount of boost regulated, maybe they adjusted the turbos to produce a higher then stock amount of Boost to reach 256 miles per hour.
Just a few questions for you guys to think about.
Burning Brakes
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Re: callaway (TheStef)
dgoodhue, Sledgehammer didn't make the 254.76mph run with 880hp. The Sledghammer had variable wastegates which the driver controlled. The engine was reportedly able to produce approximately 1200hp for brief periods (John Lingenfelter had to take advantage of the added horsepower to get to 254.76mph).
[Modified by TheStef, 9:01 AM 12/1/2003]
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From: ...tearing up the highways, one state at a time™®©
Re: callaway (TheStef)
How can the use of stock heads only make 7 or 7.5 compression ratio? (the heads must have been worked on somehow)
How much boost are both turbos producing?
Not that I mind but, how did we get back to the Sledgehammer :confused:
Hope this helps :cheers:
Drifting
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From: The Motor City
Re: callaway (dgoodhue)
All L98's were 2 bolt mains, none except the converted callways were 4 bolt mains. I suspect that the Callway originally used the 4 bolt truck block and didn't use splay main bolts.
As for the HP I have no idea really what was produced or what parts were used in that motor. Unless Callaway used a Bowtie block, I am not so sure a production SBC block would hold 1200hp.
As for the HP I have no idea really what was produced or what parts were used in that motor. Unless Callaway used a Bowtie block, I am not so sure a production SBC block would hold 1200hp.
Sledgehammer, produced a reported 898bhp@6200rpm at about 16psi boost. The 1200bhp was at 22psi of boost. And no, the block was definitely not a production unit. In fact, very few pieces in that engine were even Chevrolet. The only information I can find regarding the block is that it was a Chevrolet racing part-number (most likely one of the Bow Tie blocks).
Drifting
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From: The Motor City
Re: callaway (*89x2*)
How can the use of stock heads only make 7 or 7.5 compression ratio? (the heads must have been worked on somehow)
They were not stock heads...
They were not stock heads...
But *89x2*, when you say the heads aren't stock, what do you mean? Are they still the 113 castings? Port and polish work is one thing, but a different casting is something else.
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From: ...tearing up the highways, one state at a time™®©
Re: callaway (TheCorvetteKid)
But *89x2*, when you say the heads aren't stock, what do you mean? Are they still the 113 castings? Port and polish work is one thing, but a different casting is something else.
[Modified by *89x2*, 9:45 PM 12/1/2003]
Drifting
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From: The Motor City
Re: callaway (*89x2*)
Sledge used Brodix heads...Production B2K used stock heads :cheers:
I knew that Sledge used (the now defunked) Brodix heads, but as I stated earlier, very little of the Sledgehammer's was Chevrolet - just the block from my understanding. But when you said that Callaway twin turbo (B2K) cars didn't use stock heads, I got worried for a second there. I thought I missed some vital peice of information.
It's all good now. :yesnod:
[Modified by TheCorvetteKid, 6:36 PM 12/2/2003]
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St. Jude Donor '10
Drifting
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From: The Motor City
Re: callaway (SurfnSun)
But it looks like I'm wrong...again. Maybe I should just keep my mouth shut while the keepin's good. :confused:
Thanks again for the correction SurfnSun. :cheers:
