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#1
05-27-2022, 03:09 PM
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Scattershield Woes
Argh... It appears the ancient lakewood shield I have was modified (purchased used in 1993) for a CHEBBY as someone welded in another starter "ear".
Also seems they bored the ID to accept a TRUCK tranny at 5.125 (they screwed that up too...off center) Short story, does anyone have the dimension data for GM stuff for bellhousing numbers? Dowel pin to dowel pin to crank centerline? I can weld in a ring to bring the hole back to Municie ( 4.625) then parallel cut everything...I have TIME....not $$$$ (damn sure not $800 for a bell housing in a budget street car). I would like to only do 1 set up on this instead of having to set it up work it..bore it then come home and measure the off center...to go back and off-set indicate it and re-bore it....tik, tok, goes the clock. |
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#2
05-27-2022, 03:52 PM
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You do know any modifications voids the SFI rating if you need it.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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#3
05-27-2022, 04:09 PM
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The dowl pins are 15.379” to 15.381 apart on center.
From the center of the lower bolt hole on the passenger side the crank center line is 7.690”.
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I do stuff for reasons. |
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#4
05-27-2022, 07:56 PM
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25stevem, if that drawing is the old Tom Wilhite drawing of the rear of the block bolt pattern, there were a few errors in that drawing.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#5
05-27-2022, 08:05 PM
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Yes that’s the source.
Well maybe it will be some sort of help to him?
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I do stuff for reasons. |
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#6
05-27-2022, 09:18 PM
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close but doesn't seem to list the crankshaft centerline------to the dowel hole???.....
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#7
05-28-2022, 06:15 AM
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Yes it does show the crank centerline referenced down from the passenger side dowl hole and over from that lower bolt hole.
If you measure down 1.880” from the dowl hole to the lower bolt hole and then measure out to left .110”, then that’s where the crank centerline measurement of 7.690” is taken from, assuming those three dimensions are correct. It should be easy to flip a block on its nose and confirm some of these dimensions, no?
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I do stuff for reasons. Last edited by 25stevem; 05-28-2022 at 06:28 AM. |
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#8
05-28-2022, 07:50 AM
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no it doesn't....lol......you need 1 more pretty critical dim to get there. Like a vertical number from centerline to ...ANYTHING. Everything on here is incremental value...cool if I need to lay out screw holes but I need a dim relative to the crankshaft centerline.
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#9
05-28-2022, 07:52 AM
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#10
05-28-2022, 07:53 AM
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found 1 .....2.32 dim is the winner
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#11
05-28-2022, 11:54 AM
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Mine is scrap metal...can't justify 10+ hrs fixing this vs $350 for a used one....
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