305 Chev Sleeves?

Dyno · 08-06-2013, 05:30 PM

Does anyone know of a sleeve you can use to down size a 350 block to a 305 bore. Part number would also help. thanks, Dyno

JHeath · 08-06-2013, 05:41 PM

a 305 HEMI????

FINESPLINE · 08-06-2013, 07:50 PM

You can try Darton as their site does mention custom sleeves. Might get costly but best to call.

JRyan · 08-06-2013, 08:09 PM

Dyno,

Much cheaper to sleeve a 307 Chev block. Some of them were cast on 350 cores.

Jerry

Mike Taylor 3601 · 08-07-2013, 08:44 AM

If you want to sleeve 350 down to 305, I would look @ melling CSL283 is 3.800 bore which you could finish to 3.796 if you were going .060 or could go .070 or .080 CSL 283 is 1/8'' wall so OD should be where it will press into 4.050 hole w/ about .002 press.
As J Ryan said a 307 would be good choice also.
I had Darton make some custom sleeves years ago for 4 cyl. project,at that time you had to do a min. of 12 pieces I believe.
Mike Taylor 3601

Tom Moock · 08-07-2013, 11:04 AM

Dyno, why don't you buy a small bore bowtie block? Tom

Dyno · 08-07-2013, 12:22 PM

Tom, I did not think they were still available. Anyone have the part number for that block? thanks.

Mike Taylor 3601 · 08-07-2013, 01:47 PM

Was'nt small bore version 3.875?
If buying new might check Dart they may make something,have seen them make some special blocks,had customer that got 2 solid Big M's,cast iron no water jackets,they had extra deck left if remember we were able to make 11.675 deck height.
Did move these without using overhead hoist.
Mike Taylor 3601

LE WILSON · 08-07-2013, 02:31 PM

I have a new GM small bore bow-tie block. IT has a rough bore of 3.660 . Will make a 305 or 283. Guaranteed. Local pick-up in Ky. Will deliver to div 3 races. $1500. Contact Larry Wilson SS/L 3058 @ 502-262-3280.

FED 387 · 08-07-2013, 02:58 PM

look at GM part # 10051182 or 24502501 ---same block but last one is all CNC'd up--

FED387

08-06-2013, 05:30 PM	#1
Dyno Senior Member Join Date: Dec 2002 Posts: 870 Likes: 917 Liked 605 Times in 177 Posts	305 Chev Sleeves? Does anyone know of a sleeve you can use to down size a 350 block to a 305 bore. Part number would also help. thanks, Dyno

08-06-2013, 05:41 PM	#2
JHeath Senior Member Join Date: Jul 2004 Location: Minneapolis Posts: 788 Likes: 2,890 Liked 370 Times in 102 Posts	Re: 305 Chev Sleeves? a 305 HEMI???? __________________ Jerry Heath I/S '93 Cobra FS/J 2010 Mustang "Ebay CJ"

08-06-2013, 07:50 PM	#3
FINESPLINE Senior Member Join Date: Apr 2010 Location: Island of high taxes, N.Y. Posts: 541 Likes: 0 Liked 1 Time in 1 Post	Re: 305 Chev Sleeves? You can try Darton as their site does mention custom sleeves. Might get costly but best to call.

08-06-2013, 08:09 PM	#4
JRyan Senior Member Join Date: Apr 2003 Location: Aberdeen SD Posts: 642 Likes: 28 Liked 104 Times in 28 Posts	Re: 305 Chev Sleeves? Dyno, Much cheaper to sleeve a 307 Chev block. Some of them were cast on 350 cores. Jerry

08-07-2013, 08:44 AM	#5
Mike Taylor 3601 VIP Member Join Date: Oct 2008 Location: Somerset,Ky Posts: 1,303 Likes: 198 Liked 116 Times in 48 Posts	Re: 305 Chev Sleeves? If you want to sleeve 350 down to 305, I would look @ melling CSL283 is 3.800 bore which you could finish to 3.796 if you were going .060 or could go .070 or .080 CSL 283 is 1/8'' wall so OD should be where it will press into 4.050 hole w/ about .002 press. As J Ryan said a 307 would be good choice also. I had Darton make some custom sleeves years ago for 4 cyl. project,at that time you had to do a min. of 12 pieces I believe. Mike Taylor 3601

08-07-2013, 11:04 AM	#6
Tom Moock Senior Member Join Date: May 2004 Posts: 801 Likes: 1 Liked 10 Times in 6 Posts	Re: 305 Chev Sleeves? Dyno, why don't you buy a small bore bowtie block? Tom __________________ Tom Moock 5704 STK

08-07-2013, 12:22 PM	#7
Dyno Senior Member Join Date: Dec 2002 Posts: 870 Likes: 917 Liked 605 Times in 177 Posts	Re: 305 Chev Sleeves? Tom, I did not think they were still available. Anyone have the part number for that block? thanks.

08-07-2013, 01:47 PM	#8
Mike Taylor 3601 VIP Member Join Date: Oct 2008 Location: Somerset,Ky Posts: 1,303 Likes: 198 Liked 116 Times in 48 Posts	Re: 305 Chev Sleeves? Was'nt small bore version 3.875? If buying new might check Dart they may make something,have seen them make some special blocks,had customer that got 2 solid Big M's,cast iron no water jackets,they had extra deck left if remember we were able to make 11.675 deck height. Did move these without using overhead hoist. Mike Taylor 3601

08-07-2013, 02:31 PM	#9
LE WILSON Junior Member Join Date: Feb 2007 Posts: 21 Likes: 0 Liked 0 Times in 0 Posts	Re: 305 Chev Sleeves? I have a new GM small bore bow-tie block. IT has a rough bore of 3.660 . Will make a 305 or 283. Guaranteed. Local pick-up in Ky. Will deliver to div 3 races. $1500. Contact Larry Wilson SS/L 3058 @ 502-262-3280.

08-07-2013, 02:58 PM	#10
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,349 Likes: 325 Liked 280 Times in 150 Posts	Re: 305 Chev Sleeves? look at GM part # 10051182 or 24502501 ---same block but last one is all CNC'd up-- FED387