8.1 litre - Team Camaro Tech
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post #1 of 6 (permalink) Old Oct 26th, 05, 06:32 PM Thread Starter
Scott
 
Join Date: Sep 2005
Location: Altoona, pa.
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8.1 litre

Are there any people out there using the newer 8.1 litre out of the heavy duty P/U. Would it be the same as building a Gen5 big block and can you get the performance parts reasonable. I have a core and would like to build a 540 for my 67 RS. Thanks for any help.
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post #2 of 6 (permalink) Old Oct 26th, 05, 10:16 PM
 
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Re: 8.1 litre

GM did a major redesign of the 8100 series big block. According to GM's web site , nearly 90% of the components are different than the Mark IV, V, and VI engines. The cylinder heads are new, with a symmetrical port layout and a revised bolt pattern. The crank uses an integral crank sensor for use with the Port EFI. The latest versions uses "drive by wire" throttle. Becuase of the major changes in the design of this generation big block, I haven't seen any performance parts for it the last a looked, which was nearly a year ago.

John
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post #3 of 6 (permalink) Old Oct 27th, 05, 05:45 AM
 
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Smile Re: 8.1 litre

And to top it off, it is a tall deck block so fitment will be a big concern.

pdq67



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post #4 of 6 (permalink) Old Oct 28th, 05, 02:58 PM
 
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post #5 of 6 (permalink) Old Oct 28th, 05, 06:09 PM
 
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Smile Re: 8.1 litre

Back again,

If I had one to play with, I would try to redrill the deck and put a Mark IV top end on it!

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post #6 of 6 (permalink) Old Oct 29th, 05, 07:04 PM
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Lee
 
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Location: Fort Worth, TX
Posts: 708
Re: 8.1 litre

Go over to LS1Tech.com, there is someone in the truck section that plays with 8.1's and might be able to help you out. Previous posts are correct there is not much in the way of performance parts yet for this engine. You can always put some type of forced induction on it though, if you have $$ and wherewithawl to work through some of the engineering issues.

For all the hassle, you would be better off putting an LS1 or LS2 engine in your car since you will be dealing with an injected motor w/a PCM etc. At least with the LS1's there are parts/pieces to make the install easier.
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