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#1
02-06-2024, 08:19 PM
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Little Freezeplugs on SM heads?
Those dinky little freezeplugs, are you all just knocking them out and raplacing them with a 3/8npt plug?
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 Johnny US Army Retired1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1980 Formula 350 Pontiac back burner project 1972 LeMans 350 Pontiac |
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#2
02-06-2024, 08:37 PM
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That would def be an upgrade we have a set with a couple thousand miles On them and so
Far no issues these were out of the box installed
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1969 carousel red firebird 455, richmond 5 speed 1964 540 gto 1971 lemans sport convertible 1972 Maverick under slow construction |
| The Following User Says Thank You to mysticmissle For This Useful Post: | ||
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#3
02-07-2024, 01:59 PM
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Here's what I did, came out pretty good. I had to slightly expand the hole to start the tap. I'll threadlock them in after a good cleaning.
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Johnny US Army Retired1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1980 Formula 350 Pontiac back burner project 1972 LeMans 350 Pontiac |
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#4
02-07-2024, 04:21 PM
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You might want to get a Allen head style plug.
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#5
02-07-2024, 04:25 PM
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Anything but an iron pipe plug, I’d never use iron.
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
| The Following User Says Thank You to b-man For This Useful Post: | ||
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#6
02-07-2024, 04:39 PM
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Quote:
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Johnny US Army Retired1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1980 Formula 350 Pontiac back burner project 1972 LeMans 350 Pontiac |
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#7
02-07-2024, 04:52 PM
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Stainless is great.
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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#8
02-07-2024, 07:41 PM
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Those also have me worried about popping out and milk shaking the motor. But figure Pontiac used plugs in the main oil galleries that would be more catastrophic if they come out!
SM has two plugs like those in their Air Gap SBC intake valley cover in the middle.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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