253 V8 carby selection

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Re: 253 V8 carby selection

Postby delcowizzid » Tue Mar 10, 2020 10:03 am

To freshen a 304 with stock pistons costs me about $2000nz and the only thing a shop touched was fitting cam bearings
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Re: 253 V8 carby selection

Postby Gampy » Tue Mar 10, 2020 10:23 am

Yes, Some machine shops will hone the good bores then bore/hone the sleeve to match.
Not something we did ...

Pretty much any shop will take your money, what you get for it in return will be the difference!
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Re: 253 V8 carby selection

Postby Madmatt2006 » Tue Mar 10, 2020 11:14 am

vlad01 wrote:Not sure but it cost me bit over 1k for all the machine work including rebore on my 6 but I supplied the pistons, the rest they supplied, bearings etc. I would expect for an 8 to be around $1500 ? maybe?


Looks like I will have to take it to the machine shop and see what they say :thumbup:

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Re: 253 V8 carby selection

Postby Madmatt2006 » Tue Mar 10, 2020 11:16 am

Gampy wrote:Yes, Some machine shops will hone the good bores then bore/hone the sleeve to match.
Not something we did ...

Pretty much any shop will take your money, what you get for it in return will be the difference!



I will take it in for these guy's to take a look, they are the best around here :thumbup:

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Re: 253 V8 carby selection

Postby Madmatt2006 » Tue Mar 10, 2020 11:42 am

Out of interest say I did put a later commodore V8 in say from a VN or newer would you need an engineers certificate? most of it bolts right in as far as I know :think:

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Re: 253 V8 carby selection

Postby Madmatt2006 » Tue Mar 10, 2020 3:35 pm

Madmatt2006 wrote:Out of interest say I did put a later commodore V8 in say from a VN or newer would you need an engineers certificate? most of it bolts right in as far as I know :think:


Scrap that idea. Been talking to my mate I got the engine off, he's going to give me my money back and said keep the motor! so it will be going to the machine shop. Thanks everyone for all the help I really appreciate that :thumbup:

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Re: 253 V8 carby selection

Postby Madmatt2006 » Mon Mar 23, 2020 11:41 am

Dropped engine at the machine shop, The guy had a quick look. It will need a sleeve in the bad cylinder rest hone then re ring and bearing we are hoping! he said he'd let me know if any thing else is needed. Fingers crossed I hope to get it running Easter weekend :)

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Re: 253 V8 carby selection

Postby SL/EEPER » Mon Mar 30, 2020 7:00 am

253 to 310 stroker =
bore 0.120" over size
offset grind stock crank
chev SJ 327 5.7" rods that need to be narrowed
chev 305 pistons machined to correct height

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