06-22-2016, 08:22 PM | #1 |
Registered User
Join Date: Oct 2015
Location: grand valley pa
Posts: 52
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8.1
Is a 8.1 and a 3ott doable, I was told that the 8.1 shard the same bell housing as the older motors. Have a change to get one of these but I want to keep the 3ott and I will be driving respectable with the old 3ott, and does these motor's have the .400 thou discrepancy as the other ls's.
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06-22-2016, 09:13 PM | #2 |
Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: 8.1
8.1L's have the same Crank Spacing as Mark IV big blocks & Gen I Small Blocks.
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06-22-2016, 09:29 PM | #3 |
Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
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Re: 8.1
It will work but you better put a throttle stop somewhere around 1/8 throttle. That big block makes massive power compared to what that old transmission was designed for. The torque will rip it apart.
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06-22-2016, 11:27 PM | #4 |
60-66 Nut
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
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Re: 8.1
I agree. A little 3 speed behind that 8.1 is just a grenade waiting to explode.
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06-23-2016, 04:02 AM | #5 |
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Join Date: Oct 2015
Location: grand valley pa
Posts: 52
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Re: 8.1
Thanks for all the replies.
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