Author Topic: Motor plates  (Read 9080 times)

Offline janjon

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Motor plates
« on: April 05, 2013, 10:34:58 AM »
Does anyone know where I might find block bolt patterns, front and rear, for small block Chevy, for purposes of building engine plates? Any help appreciated.
John
Just keep the same amount of stuff on the right
as there is on the left. Seeing straight ahead is highly overrated....

Offline GlennLever

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Re: Motor plates
« Reply #1 on: April 05, 2013, 11:51:01 AM »
Does anyone know where I might find block bolt patterns, front and rear, for small block Chevy, for purposes of building engine plates? Any help appreciated.
John


This should help get you started.
This print shows the rear of the “Small Block Chevy” block including bell housing bolt hole pattern w/dimensioning including crank centerline etc.


« Last Edit: April 05, 2013, 02:41:37 PM by GlennLever »
Glenn R. Lever
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Offline wideopen231

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Re: Motor plates
« Reply #2 on: April 05, 2013, 03:16:05 PM »
I use old power glide case for rear and set of threaded dead centers for front,simply screw then in and lay plate ofer them and tap with hammer.it makes perfect punh makrs fro drilling them. I guess you could do same on rear.  You can cheat and make a set in lathe or drill press,
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Offline janjon

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Re: Motor plates
« Reply #3 on: April 05, 2013, 07:52:35 PM »
Thanks so much for the help and tips, Glenn and wideop.
John
Just keep the same amount of stuff on the right
as there is on the left. Seeing straight ahead is highly overrated....

Offline janjon

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Re: Motor plates; now head bolt dimensioning
« Reply #4 on: March 19, 2015, 06:28:35 PM »
Might there be a similar drawing for SBC cylinder heads? Having to modify existing stud girdles to accept larger rocker nuts; there's some variation between center distances of the studs on the the heads, as measured, would be nice to know what it's "supposed to be". Any help appreciated, as always here.
John
Just keep the same amount of stuff on the right
as there is on the left. Seeing straight ahead is highly overrated....

dreracecar

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Re: Motor plates
« Reply #5 on: March 21, 2015, 11:42:10 AM »
Chevy rear dowel pins are .6200, dont mistake them for .625 (5/8"). you will need to get a chucking ream cut down to to proper size
« Last Edit: March 22, 2015, 04:53:27 PM by dreracecar »

Offline janjon

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Re: Motor plates
« Reply #6 on: March 22, 2015, 07:33:38 AM »
Calipers confirm that you are correct, sir, as always, thanks.
Just keep the same amount of stuff on the right
as there is on the left. Seeing straight ahead is highly overrated....

Offline dusterdave173

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Re: Motor plates
« Reply #7 on: March 22, 2015, 09:19:53 AM »
Janjon I have tried that and it is hard to make it work out--I can sell You Jomar girdles cheap that are correct for any head / valve location  Jomar makes them for everyone--if you are off just a tad it puts a strain on the stud and can mess with the lash and what not--let me know exactly what head you have and stud locations--I can drop them on your door
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Offline janjon

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Re: Motor plates
« Reply #8 on: March 26, 2015, 06:45:21 PM »
DusterDave please message me some contact info or e-mail me john@majormetals.com
Thanks
Just keep the same amount of stuff on the right
as there is on the left. Seeing straight ahead is highly overrated....