Pistons look different - The 1947 - Present Chevrolet & GMC Truck Message Board Network

84_4x4 · 04-18-2007, 04:43 PM

i pulled one cylinder head today and noticed that my pistons have 4 grooves like for a 32 valve engine but i only have a 16 valve engine is this normal or may i not have the same engine as what came in the truck or just a result of rebuild

blukangoo · 04-18-2007, 04:47 PM

If they are all the same, don´t worry about it.
Mine are like that too.

RACINJASON22 · 04-18-2007, 04:53 PM

Normal stock 4 valve relife piston

*Billla* · 04-18-2007, 04:54 PM

No worries; this allows the piston to be used on either bank.

Blazer1970 · 04-18-2007, 07:21 PM

Quote:

Originally Posted by Billla

No worries; this allows the piston to be used on either bank.

They can always be used on either bank. What the four reliefs do is allow them to be installed backward or forward without ruining a new rebuild which is handy for a lot of mechanics.

84_4x4 · 04-18-2007, 09:27 PM

well thats a relief i was afraid i had some redneck engineering done

RACINJASON22 · 04-19-2007, 12:23 AM

well ya could have that too but the pistons are at least ok

04-18-2007, 04:43 PM	#1
84_4x4 Registered User Join Date: Oct 2006 Location: Louisville Ky Posts: 179	Pistons look different i pulled one cylinder head today and noticed that my pistons have 4 grooves like for a 32 valve engine but i only have a 16 valve engine is this normal or may i not have the same engine as what came in the truck or just a result of rebuild __________________ 1971 c10 350ci long bed fleet side

04-18-2007, 04:47 PM	#2
blukangoo Neighborhood Pickle Slinger Join Date: Jan 2007 Location: Cadolzburg, Bavaria, Germany Posts: 2,224	Re: Pistons look different If they are all the same, don´t worry about it. Mine are like that too. Attached Images __________________ -------------------------------------------------- My C10 Diary Our cars: 1966 Chevrolet Chevelle 396 - TH350 1968 Chevrolet C10/CST 327 TH400/375 1969 Corvette Stingray 350 - Muncie Manual Trans 1969 Chevrolet ElCamino 350 - TH400 1970 Cutlass Supreme Convertible - 350 Rocket - TH350 1973 Camaro LT - New Engine Done - TH350 1973 Corvette Convertible 454 - TH400 Last edited by blukangoo; 04-18-2007 at 04:51 PM.

04-18-2007, 04:53 PM	#3
RACINJASON22 GEARHEAD Join Date: Jan 2007 Location: CENTRAL,PA Posts: 2,284	Re: Pistons look different Normal stock 4 valve relife piston __________________ 72 SWB 2WD MY PROJECT 72 LWB 4X4 FUTURE PROJECT SUBSCRIBE HEREBOARD VENDORS HERE NORWOOD MEET SURVIVOR! Last edited by RACINJASON22; 04-18-2007 at 05:10 PM.

04-18-2007, 04:54 PM	#4
Billla Account Suspended Join Date: Sep 2005 Location: Monroe, WA Posts: 3,815	Re: Pistons look different No worries; this allows the piston to be used on either bank.

04-18-2007, 09:27 PM	#6
84_4x4 Registered User Join Date: Oct 2006 Location: Louisville Ky Posts: 179	Re: Pistons look different well thats a relief i was afraid i had some redneck engineering done __________________ 1971 c10 350ci long bed fleet side

04-19-2007, 12:23 AM	#7
RACINJASON22 GEARHEAD Join Date: Jan 2007 Location: CENTRAL,PA Posts: 2,284	Re: Pistons look different well ya could have that too but the pistons are at least ok __________________ 72 SWB 2WD MY PROJECT 72 LWB 4X4 FUTURE PROJECT SUBSCRIBE HEREBOARD VENDORS HERE NORWOOD MEET SURVIVOR!



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