Painting engine block
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Joined: Feb 2000
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From: Topsfield, Ma USA
Car: 1989 TTA
Engine: 3.8 Turbo
Transmission: 200R4
Axle/Gears: 3.27
Painting engine block
any tips or suggestions for painting preppeng engine block so I get a good durable finish, any preferred products???
Joined: Sep 2005
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Cleaning it up good is more important than the products you use. Paint won't stick to rust and old oil and dirt. A trip to the quarter car wash after it comes back from the vat, followed by spray can carb cleaner, is a must.
I use marine-grade zinc chromate primer from an industrial marine supplier (NOT a home-improvement store), and either regular "engine enamel", or "machinery enamel", or even just plain old auto exterior paint, depending on what color and so forth that I want. The top coat doesn't matter very much what it is, except that you want to avoid things (such as high-temp VHT) that dissolve in gasoline. Prep and primer is far more important.
I usually paint the interior with electric motor paint of some sort.
I use marine-grade zinc chromate primer from an industrial marine supplier (NOT a home-improvement store), and either regular "engine enamel", or "machinery enamel", or even just plain old auto exterior paint, depending on what color and so forth that I want. The top coat doesn't matter very much what it is, except that you want to avoid things (such as high-temp VHT) that dissolve in gasoline. Prep and primer is far more important.
I usually paint the interior with electric motor paint of some sort.
Joined: Jun 2003
Posts: 5,028
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
I have found that any name brand paint will hold up under summer conditions. If I paint a block that will see the winter though, I use rustoleum or the East wood rust encapsulator or por-15 or por-20.
Also, before you paint it, take most rust off and go over the block with a torch to burn anything off.
Also, before you paint it, take most rust off and go over the block with a torch to burn anything off.
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Joined: Jul 2001
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From: Pueblo Co
Car: 1989 C4
Engine: L98
Transmission: 700r4
Axle/Gears: 307
Regular high temp engine enamel seems to work just fine for me. This engine was painted in 2000 and the pic was taken a couple month ago.
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Joined: Sep 2002
Posts: 9,192
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From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
One suggestion - check the paint on another similar surface first. The guy who built my 350, bought a can of "Porshe Red" from somewhere, thought it would be a nice red color like any of us would think. He painted the block, and left out of town for a week. When he returned, the dried block was Hot Fushia Pink! So now, I have a hot fushia pink motor! (hey, it was cheap)
It's got to be fast enough, I can't afford to stay around long - too much crap to hear about having a pink motor! LOL
AND - if that wasn't enough - my brother got me new plug wires for Xmas - ordered them online - a nice pretty red picture on the Internet. Also, a nice pretty red picture on the box label. BUT - when we opened the box Xmas day..... can you guess what color the wires are? YES!!!! Hot Pink!!!!
I'm destined to have pink I guess! You gotta love it!
It's got to be fast enough, I can't afford to stay around long - too much crap to hear about having a pink motor! LOL
AND - if that wasn't enough - my brother got me new plug wires for Xmas - ordered them online - a nice pretty red picture on the Internet. Also, a nice pretty red picture on the box label. BUT - when we opened the box Xmas day..... can you guess what color the wires are? YES!!!! Hot Pink!!!!
I'm destined to have pink I guess! You gotta love it!
Joined: May 2004
Posts: 2,262
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From: houston
Car: 83 POS monte carlo 2015 chevy P/U
Engine: 92 5.7 tpi 5.3
Transmission: 700r4 6L60E
Axle/Gears: 2.42 too high
When he returned, the dried block was Hot Fushia Pink! So now, I have a hot fushia pink motor!
can you guess what color the wires are? YES!!!! Hot Pink!!!!
,........... just kidding you know Trending Topics
Joined: Sep 2005
Posts: 27,861
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
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Originally posted by camaronewbie
One suggestion - check the paint on another similar surface first. The guy who built my 350, bought a can of "Porshe Red" from somewhere, thought it would be a nice red color like any of us would think. He painted the block, and left out of town for a week. When he returned, the dried block was Hot Fushia Pink! So now, I have a hot fushia pink motor! (hey, it was cheap)
It's got to be fast enough, I can't afford to stay around long - too much crap to hear about having a pink motor! LOL
AND - if that wasn't enough - my brother got me new plug wires for Xmas - ordered them online - a nice pretty red picture on the Internet. Also, a nice pretty red picture on the box label. BUT - when we opened the box Xmas day..... can you guess what color the wires are? YES!!!! Hot Pink!!!!
I'm destined to have pink I guess! You gotta love it!
One suggestion - check the paint on another similar surface first. The guy who built my 350, bought a can of "Porshe Red" from somewhere, thought it would be a nice red color like any of us would think. He painted the block, and left out of town for a week. When he returned, the dried block was Hot Fushia Pink! So now, I have a hot fushia pink motor! (hey, it was cheap)
It's got to be fast enough, I can't afford to stay around long - too much crap to hear about having a pink motor! LOL
AND - if that wasn't enough - my brother got me new plug wires for Xmas - ordered them online - a nice pretty red picture on the Internet. Also, a nice pretty red picture on the box label. BUT - when we opened the box Xmas day..... can you guess what color the wires are? YES!!!! Hot Pink!!!!
I'm destined to have pink I guess! You gotta love it!
Supreme Member

Joined: Jul 2001
Posts: 3,974
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From: Pueblo Co
Car: 1989 C4
Engine: L98
Transmission: 700r4
Axle/Gears: 307
Originally posted by camaronewbie
One suggestion - check the paint on another similar surface first. The guy who built my 350, bought a can of "Porshe Red" from somewhere, thought it would be a nice red color like any of us would think. He painted the block, and left out of town for a week. When he returned, the dried block was Hot Fushia Pink! So now, I have a hot fushia pink motor! (hey, it was cheap)
It's got to be fast enough, I can't afford to stay around long - too much crap to hear about having a pink motor! LOL
AND - if that wasn't enough - my brother got me new plug wires for Xmas - ordered them online - a nice pretty red picture on the Internet. Also, a nice pretty red picture on the box label. BUT - when we opened the box Xmas day..... can you guess what color the wires are? YES!!!! Hot Pink!!!!
I'm destined to have pink I guess! You gotta love it!
One suggestion - check the paint on another similar surface first. The guy who built my 350, bought a can of "Porshe Red" from somewhere, thought it would be a nice red color like any of us would think. He painted the block, and left out of town for a week. When he returned, the dried block was Hot Fushia Pink! So now, I have a hot fushia pink motor! (hey, it was cheap)
It's got to be fast enough, I can't afford to stay around long - too much crap to hear about having a pink motor! LOL
AND - if that wasn't enough - my brother got me new plug wires for Xmas - ordered them online - a nice pretty red picture on the Internet. Also, a nice pretty red picture on the box label. BUT - when we opened the box Xmas day..... can you guess what color the wires are? YES!!!! Hot Pink!!!!
I'm destined to have pink I guess! You gotta love it!
The rest of the engine was gold. Hard to beleive Mike was in special forces. Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 19
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Ya gotta love it! I gonna keep 'em - what the hell! It'll be a conversation piece if nothing else!
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