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Very Important Block Question!! by sublime922
Started on: 12-17-2003 12:53 PM
Replies: 4
Last post by: Doug Chase on 12-17-2003 04:36 PM
sublime922
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Report this Post12-17-2003 12:53 PM Click Here to See the Profile for sublime922Click Here to Email sublime922Send a Private Message to sublime922Direct Link to This Post
i have a 2.8 block, with a "freeze plug" type thing in the mechanical fuel pump hole. the problem is, i am having it machined to be ready for the 3.1 stroker kit. i just noticed on the 3.1 page, that it must be a mid85 or newer block to use the kit. can it be assumed that since it has a block off on the mechanical fuel pump hole that it is a fuel injection engine from? that would automatically make it newer that mid 85 wouldnt it since they didnt use the fuel injection before then?

EDIT Just called the shop where the block is at and asked them, they said since it has a one piece rear main seal, its a second generation 2.8 block and should be find to use with the 3.1 kit. they said the difference was in the size of the main journals and the one piece rear main seal has the larger journals and will work fine with the 3.1 crank. is this correct as well?

[This message has been edited by sublime922 (edited 12-17-2003).]

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DanielKJenkins
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Report this Post12-17-2003 01:30 PM Click Here to See the Profile for DanielKJenkinsClick Here to Email DanielKJenkinsSend a Private Message to DanielKJenkinsDirect Link to This Post
There is a retro fit kit for the single piece seal to the pre 85 block.

Measure the crank journals and see if it is the large journal (67mm VS 63mm). that way you are sure.

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sublime922
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Report this Post12-17-2003 01:32 PM Click Here to See the Profile for sublime922Click Here to Email sublime922Send a Private Message to sublime922Direct Link to This Post
i am assuming that i want the larger journals? im not even sure what the issue is. something about an axtra lobe on the 3.1 crank that hits the block on the pre 85 block?
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DanielKJenkins
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Report this Post12-17-2003 01:47 PM Click Here to See the Profile for DanielKJenkinsClick Here to Email DanielKJenkinsSend a Private Message to DanielKJenkinsDirect Link to This Post
You want the large journal. The 3.1 crank will not fit in the small journal block.
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Doug Chase
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Report this Post12-17-2003 04:36 PM Click Here to See the Profile for Doug ChaseSend a Private Message to Doug ChaseDirect Link to This Post
 
quote
Originally posted by sublime922:

they said the difference was in the size of the main journals and the one piece rear main seal has the larger journals and will work fine with the 3.1 crank. is this correct as well?

Yes, that's correct.

------------------
Doug Chase
Chase Race
Custom roll cage and exhaust fabrication

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