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Discussion Starter #1
Ok well I have my engine built and going from a 250 w/glide to a 350 w/th350 short shaft. I have the new mounts for the block and got a new trans poly mount. but do I need anything for the frame mount? and will the drivehshaft be ok?
 

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i just did a similar swap. i bought new frame mounts. i put the original tranny back in, so i cant help you there.
 

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You need new frame stands thats about it.
 

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When I did my 72 6+glid to sbc + T350 I had no problem reusing the 6 stands and driveshaft.Good luck with the swap.
 

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changing the front spring would be good too.
 

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Don't worry about changing the springs unless you need to anyway. The small block doesn't weigh that much more, and some of the 6 cyl spring rates were actually stiffer than some of the V8 springs.I would wait until your swap is done and see what your height/handling and ride quality is.

From memory BBC 675 LBS
SBC 550
I6 450
 

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Well, i once did that swap of 6L to V8 and had to change coil springs, that´s why i put that comment.

just my 2 cents.

Regards.
 

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my car sat high with the stock 6 cylinder springs after putting my small block in. cut 1 1/4 coil out. i also like my car to sit low though. you should put a stick in it
 
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