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Old 04-13-2008   #1
RHanselman
 
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Join Date: Jul 2005
Location: Cresson, TX
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Default Low Compression LT5 going together!

The short block was complete last week with the rest to follow this week.

Pistons are 9:1 custom units
New cylinder bore is 4.030"
CI is 374
Stock rods (reworked)
Stock valve train and rods (light weight lifters added)
Heads are lightly ported with a fresh performance valve job

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1991 #383 Twin Turbo
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Last edited by RHanselman; 04-14-2008 at 09:36 AM.
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Old 04-13-2008   #2
LGAFF
 
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Default Re: Low Compression LT5 going together!

And I assume that lowering compression has something to do with running the car on E85 or a lower octane in order to reduce your operating expense and reduce greenhosue gases, correct?

Or is it going to be a high boost LT-5 to blow the Fn doors off the new LS9 motor.

I'm good with either!

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Old 04-14-2008   #3
bradslt5
 
Join Date: Oct 2007
Location: lone pine and mammoth lakes ca.
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Default Re: Low Compression LT5 going together!

aw gee , if i had to guess it would be statement number 2!!!!!!!!!!!!!!!!!!!!. what head gaskets are you going to use, how much boost. this is making me wish and drool at the same time . please no teasing allowed . congrats .looks veryt nice
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Old 04-14-2008   #4
RHanselman
 
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Default Re: Low Compression LT5 going together!

This car is a rear mount twin turbo. Boost will be tow levels, 10 or so for street and 15 or so for track days. HP will be more than the LS9

www.raptorllc.net



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Ron Hanselman
Founding Member #80
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1991 #383 Twin Turbo
1993 #099 Ruby, Jeal 368 w/Snake Skinner body
1961 White with Red Int

Last edited by RHanselman; 04-14-2008 at 12:41 AM.
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Old 04-14-2008   #5
bradslt5
 
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Default Re: Low Compression LT5 going together!

when do you think the kit for our cars will be ready?
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Old 04-14-2008   #6
cuisinartvette
 
Join Date: Aug 2005
Location: San Fernando Valley, CA.
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Default Re: Low Compression LT5 going together!

Awesome, keep the info coming.
Where did you ge t he lightweight lifters?
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Old 04-14-2008   #7
tomtom72
 
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Default Re: Low Compression LT5 going together!

Good luck with the project!

This surely will be an impressive ZR-1......I'm soooo envious

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Old 04-14-2008   #8
RHanselman
 
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Default Re: Low Compression LT5 going together!

Quote:
Originally Posted by cuisinartvette
Awesome, keep the info coming.
Where did you ge t he lightweight lifters?
Aaron at SGC supplied them.
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Ron Hanselman
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CM Lifetime Member #1093

1991 #383 Twin Turbo
1993 #099 Ruby, Jeal 368 w/Snake Skinner body
1961 White with Red Int
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Old 04-14-2008   #9
RHanselman
 
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Default Re: Low Compression LT5 going together!

Quote:
Originally Posted by bradslt5
when do you think the kit for our cars will be ready?
Our projected release date for the LT1 system is 1 July. We hope to be ready with the LT5 kit 30-60 days later. Just a guesstimate...
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CM Lifetime Member #1093

1991 #383 Twin Turbo
1993 #099 Ruby, Jeal 368 w/Snake Skinner body
1961 White with Red Int
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Old 04-14-2008   #10
bradslt5
 
Join Date: Oct 2007
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Default Re: Low Compression LT5 going together!

I think that the atten to detail , to get it right first, shows the class that you all have , and that this will be a great start to a very first class company.the sts people have a great idea but have rushed their kits and used second grade parts . i have had first hand experience with this with a camero kit .your parts choices are indeed first rate . when you offer this for the zr1 i will be happy to order a kit the day you offer it to the public. please let me know when you do .
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