hole on side of block? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

drewfever1020 · 08-30-2009, 11:47 PM

i have a 454 bigblock and i was wondering what are the 3 holes on each side of the block? they are capped or closed with some sort of cap!
350 small blocks also have them?
are they replaceable?

BAGNDRAGIT · 08-30-2009, 11:59 PM

they are called freeze plugs, and yes they are replaeable.

drewfever1020 · 08-31-2009, 12:03 AM

were can i get them?

**fine69** · 08-31-2009, 12:09 AM

Any auto parts store. They sell them as kits for engines. Or you can buy them individually.

drewfever1020 · 08-31-2009, 12:20 AM

ok cool thanks alot

cdowns · 08-31-2009, 06:48 AM

if they're not rusted out or leaking they're better off left alone

**special-K** · 08-31-2009, 07:08 AM

I agree.Is the motor in a vehicle?There are other freeze plugs on the front and back.

big_al_71 · 08-31-2009, 07:35 AM

Yep what they said!!!

drewfever1020 · 08-31-2009, 10:04 AM

the motor is on a stand and its missing two plugs so im just gonna get those two that i need!

68gmsee · 08-31-2009, 10:38 AM

Since this is the first time you've done this, order an extra one. They're cheap. Also, they are an extremely tight fit to prevent coolant from leaking out. I've used a small amount of high heat sealant around them before, but it's not necessary if the surfaces are clean and smooth.

Also, you will need some tool that you can use to insure they go in evenly... That's where the extra one may come in if you bugger one up...

Tx Firefighter · 08-31-2009, 04:31 PM

I'd be very leery of an engine missing the block plugs. Why are they gone ? If the engine had straight water in it and freezing made them pop there is a high chance the block itself is cracked.

As far as installing them, just use a socket that fits snugly in the recess and tap them in with a hammer. Nothing to it.

08-30-2009, 11:47 PM	#1
drewfever1020 Registered User Join Date: May 2008 Location: san antonio, texas Posts: 412	hole on side of block? i have a 454 bigblock and i was wondering what are the 3 holes on each side of the block? they are capped or closed with some sort of cap! 350 small blocks also have them? are they replaceable?

08-30-2009, 11:59 PM	#2
BAGNDRAGIT Just Not Low Enough! Join Date: Mar 2009 Location: Phoenix, AZ Posts: 525	Re: hole on side of block? they are called freeze plugs, and yes they are replaeable. __________________ NEED ELECTRICAL HELP? ASK ME! 67-72 Full Wiring Diagrams Lots Of Info, TAKE A LOOK 1967 Chevy C-10 Shortbox Bagged 327 4spd Previous: 1971 Chevy C-10 Short Sep I6 Auto (Traded) 1973 Chevy C-20 THE REDNECK BATTLE TRUCK 2001 Chevy Silverado 2Dr 5.3L Shortbox. R.I.P. 1969 Volkswagen Bug This is my first meeting, I have a horsepower problem.

08-31-2009, 12:03 AM	#3
drewfever1020 Registered User Join Date: May 2008 Location: san antonio, texas Posts: 412	Re: hole on side of block? were can i get them?

08-31-2009, 12:09 AM	#4
fine69 Senior Member Join Date: Dec 1999 Location: Urbana,Ohio,USA Posts: 4,618	Re: hole on side of block? Any auto parts store. They sell them as kits for engines. Or you can buy them individually. __________________ 2008 Chevy HHR 1/2 panel. 1949 Chevy Panel truck(just sittin, waiting) Board member #6

08-31-2009, 12:20 AM	#5
drewfever1020 Registered User Join Date: May 2008 Location: san antonio, texas Posts: 412	Re: hole on side of block? ok cool thanks alot

08-31-2009, 06:48 AM	#6
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: hole on side of block? if they're not rusted out or leaking they're better off left alone __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

08-31-2009, 07:08 AM	#7
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,859	Re: hole on side of block? I agree.Is the motor in a vehicle?There are other freeze plugs on the front and back. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

08-31-2009, 07:35 AM	#8
big_al_71 Registered User Join Date: Jun 2008 Location: South Florida Posts: 11,375	Re: hole on side of block? Yep what they said!!! __________________ Get your facts first, and then you can distort them as much as you please!!!!!. Sylvester's build thread >>>http://67-72chevytrucks.com/vboard/s...ht=big+rebuild

08-31-2009, 10:04 AM	#9
drewfever1020 Registered User Join Date: May 2008 Location: san antonio, texas Posts: 412	Re: hole on side of block? the motor is on a stand and its missing two plugs so im just gonna get those two that i need!

08-31-2009, 10:38 AM	#10
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: hole on side of block? Since this is the first time you've done this, order an extra one. They're cheap. Also, they are an extremely tight fit to prevent coolant from leaking out. I've used a small amount of high heat sealant around them before, but it's not necessary if the surfaces are clean and smooth. Also, you will need some tool that you can use to insure they go in evenly... That's where the extra one may come in if you bugger one up...

08-31-2009, 04:31 PM	#11
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: hole on side of block? I'd be very leery of an engine missing the block plugs. Why are they gone ? If the engine had straight water in it and freezing made them pop there is a high chance the block itself is cracked. As far as installing them, just use a socket that fits snugly in the recess and tap them in with a hammer. Nothing to it. __________________ I'm on the Instagram- @Gearhead_Kevin



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