Small Block help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68w/sbc406 · 11-12-2004, 07:49 PM

i need some one to id thi...............................just kidding, but on a sb has anyone ever drilled and tapped a hole into a spot that there isnt, but could have one in a later year??? my block is a 73 and it has the two flat spots one above the other right behind where the P/S pump is, but there is no holes. i bought a bracket for my ps pump and the bracket uses those holes. and could i possibly get someone to check the depth of those holes. i called a machine shop and they said i could and not to exceed 3/4 of an inch, i am looking for a second opinion.
thanks in advance
Ben

cableguy0 · 11-12-2004, 07:52 PM

i drilled mine myself and thats what i went was about 3/4's of an inch

68w/sbc406 · 11-12-2004, 08:22 PM

it looks like it wouldnt be to hard, just get them straight as posible, thanks

cableguy0 · 11-12-2004, 08:24 PM

yup thats the biggest thing ya gotta drill straight and stay on ur marks

Tx Firefighter · 11-12-2004, 09:35 PM

If it goes too deep and hits water, it's not the worst thing in the world. Just use sealer on the bolt.

The cast iron will tap real easy, it won't cut into shavings, it will make powder instead.

68w/sbc406 · 11-12-2004, 09:38 PM

thanks, so no metal in the oil, just the water, not to bad. it will also make a good drain plug since my radiator doesnt have one. thanks tex

Tx Firefighter · 11-12-2004, 09:40 PM

There's also one on each side of your block if you ever really need to get the water out of your truck.

68w/sbc406 · 11-12-2004, 09:51 PM

ya just take off the bottom rad hose it comes out real fast, just hope you have no cats around.

Tx Firefighter · 11-12-2004, 09:56 PM

Right above the oil pan, on each side of the block is a plug you can remove. Most times, you need to poke a screwdriver up into the hole after removing the plug because there is usually scale obscuring the hole, keeping the water from coming out..

68C15 · 11-13-2004, 12:09 AM

on mine I usually install a petcock on each side. it makes for easy flushes annually.

11-12-2004, 07:49 PM	#1
68w/sbc406 Got Light Emitting Diode? Join Date: Apr 2004 Location: Newberg, OR Posts: 2,485	Small Block help i need some one to id thi...............................just kidding, but on a sb has anyone ever drilled and tapped a hole into a spot that there isnt, but could have one in a later year??? my block is a 73 and it has the two flat spots one above the other right behind where the P/S pump is, but there is no holes. i bought a bracket for my ps pump and the bracket uses those holes. and could i possibly get someone to check the depth of those holes. i called a machine shop and they said i could and not to exceed 3/4 of an inch, i am looking for a second opinion. thanks in advance Ben __________________ 1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's(the family car) 1993 Cherokee work ride/weekend wheeler

11-12-2004, 07:52 PM	#2
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	i drilled mine myself and thats what i went was about 3/4's of an inch __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

11-12-2004, 08:22 PM	#3
68w/sbc406 Got Light Emitting Diode? Join Date: Apr 2004 Location: Newberg, OR Posts: 2,485	it looks like it wouldnt be to hard, just get them straight as posible, thanks __________________ 1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's(the family car) 1993 Cherokee work ride/weekend wheeler

11-12-2004, 08:24 PM	#4
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	yup thats the biggest thing ya gotta drill straight and stay on ur marks __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

11-12-2004, 09:35 PM	#5
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	If it goes too deep and hits water, it's not the worst thing in the world. Just use sealer on the bolt. The cast iron will tap real easy, it won't cut into shavings, it will make powder instead. __________________ I'm on the Instagram- @Gearhead_Kevin

11-12-2004, 09:38 PM	#6
68w/sbc406 Got Light Emitting Diode? Join Date: Apr 2004 Location: Newberg, OR Posts: 2,485	thanks, so no metal in the oil, just the water, not to bad. it will also make a good drain plug since my radiator doesnt have one. thanks tex __________________ 1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's(the family car) 1993 Cherokee work ride/weekend wheeler

11-12-2004, 09:40 PM	#7
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	There's also one on each side of your block if you ever really need to get the water out of your truck. __________________ I'm on the Instagram- @Gearhead_Kevin

11-12-2004, 09:51 PM	#8
68w/sbc406 Got Light Emitting Diode? Join Date: Apr 2004 Location: Newberg, OR Posts: 2,485	ya just take off the bottom rad hose it comes out real fast, just hope you have no cats around. __________________ 1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's(the family car) 1993 Cherokee work ride/weekend wheeler

11-12-2004, 09:56 PM	#9
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Right above the oil pan, on each side of the block is a plug you can remove. Most times, you need to poke a screwdriver up into the hole after removing the plug because there is usually scale obscuring the hole, keeping the water from coming out.. __________________ I'm on the Instagram- @Gearhead_Kevin

11-13-2004, 12:09 AM	#10
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	on mine I usually install a petcock on each side. it makes for easy flushes annually. __________________ Man rule #77...if you own a 67 stepside with a caddy 472 you will never be in danger of loosing you man card

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