.030 DZ302 pistons, what are they worth? - Team Camaro Tech
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post #1 of 10 (permalink) Old Oct 14th, 16, 08:06 AM Thread Starter
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Jeremy
 
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.030 DZ302 pistons, what are they worth?

Hi All,

Rebuilt this summer and had to go .040 on my DZ so I have a complete set of .030 dome pistons to sell but no idea what a used set is worth? Can someone help?
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post #2 of 10 (permalink) Old Oct 14th, 16, 08:25 AM
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Re: .030 DZ302 pistons, what are they worth?

What is the compression of those pistons given stock block and heads?? The dome looks a bit big for the stock compression....?

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post #3 of 10 (permalink) Old Oct 14th, 16, 09:49 AM Thread Starter
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Re: .030 DZ302 pistons, what are they worth?

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Originally Posted by 69Z28-RS View Post
What is the compression of those pistons given stock block and heads?? The dome looks a bit big for the stock compression....?
That's a great question, is there any way for me to tell? I'll be honest, all I know about them is that they are .030 and were in the car when I bought it. The car ran fine on 91 but much much better with 100LL or VP110 but I am not sure that tells you much.

Is there some measurement that I could take? As for the engine before I rebuilt, original Intake, original heads, original everything as far as I can tell.

Original 1969 Z28 Lemans Blue
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post #4 of 10 (permalink) Old Oct 14th, 16, 11:15 AM
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Re: .030 DZ302 pistons, what are they worth?

They look like older Trw, Speedpro, 11 or 12 :1 but if you can clean up the top of the piston , you may find numbers.

Don
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968

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post #5 of 10 (permalink) Old Oct 14th, 16, 11:32 AM
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Re: .030 DZ302 pistons, what are they worth?

Cant imagine why anyone would use old pistons if they were going to build a Original 302 DZ or any other Chevy small block, why take the chance?
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post #6 of 10 (permalink) Old Oct 14th, 16, 12:27 PM
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Re: .030 DZ302 pistons, what are they worth?

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Originally Posted by camarodude67 View Post
Cant imagine why anyone would use old pistons if they were going to build a Original 302 DZ or any other Chevy small block, why take the chance?
They probably did like I did many years ago with my original 302 block. Bored it .030 and put 12:1 pistons in and raced it.
But that was very long ago when no one knew the DZ stuff was supposed to be the king of motors.

Scrap off some of that black off the pistons and see if there is a part number.

I ran H/MP with my 55 that had my original dz block .

Don
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968

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post #7 of 10 (permalink) Old Oct 14th, 16, 12:54 PM
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Don
 
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Re: .030 DZ302 pistons, what are they worth?

Jermey , or Jeff. The number hangs in the back of my head, If those are 302 (compression height) pistons, LF 2210 is burned in my head. And other that some that wants to build a non numbers motor, those would work. Just need a crank and a few other pieces. .

Don
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968

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post #8 of 10 (permalink) Old Oct 15th, 16, 07:39 AM
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Probably a hundred at best. Used to use parts like this to build claimer motors. Get a 350 (or small journal 327) block and a 283 crank with spacer bearings and 12:1 302 pistons. Not used too much anymore. Too many other options.
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post #9 of 10 (permalink) Old Feb 7th, 18, 09:35 AM
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Re: .030 DZ302 pistons, what are they worth?

do you still have them?
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post #10 of 10 (permalink) Old Feb 9th, 18, 03:39 PM
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Re: .030 DZ302 pistons, what are they worth?

Quote:
Originally Posted by zdld17 View Post
They look like older Trw, Speedpro, 11 or 12 :1 but if you can clean up the top of the piston , you may find numbers.
If they are TRW - they should have L2210AF .030 stamped on the top.. not on top of the dome but the flat area.. and if so they can be cut down at least .100 to lower the compression somewhat if needed.

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