Heads

gmctrucks · 01-15-2009, 03:06 PM

Would these heads work or be better on my 1993 F/S 5.7 GMC truck? Or am I better off just staying with what I have plus then if I rebuilt the heads then it might start burning oil due to more compression. OK I forgot to mention it's a make offer deal.
Thanks! GMC

2.02 and 1.60 valves, high lift springs, screw in studs, and guideplates drilled and tapped for late model a/c needs one 2.02 valve, big performance increase. also comes with headers for chevy truck.

mrjohnwayne · 01-15-2009, 03:36 PM

depends on the cc of the head if it will build compression. if it is bigger than what you have it will lower compression....

They will work on you motor, but they might not be better.

bradrhale · 01-15-2009, 05:46 PM

aftermarket heads?? are they regular heads?? ported?? decked?? as john mentioned, are they 68cc, 72cc?? seems to be missing alot of info about the heads. cant use some heads out there as some have angled intake bolt holes. forget what they are called.

leolkfrm · 01-15-2009, 07:00 PM

Dumb question

why do you want to do it are yours bad? a cam is worth its money and a little less work. either way if i pulled it down it would get a mild economy cam,. lifters,and double roller chain

gmctrucks · 01-16-2009, 12:49 AM

All I have is the info I wrote and I know that replacing the cam will help but I know that I have very little to choose from because of year and it's a TBI engine oh my heads are good it's just that I was thinking of getting a lot of HP for a cheap amount of money. But then my truck won't run like it does now and so on it's probably better if I leave it alone but I would love to get a 5.3 engine in it.
2008 chevy silverado engine

silverhairdeere · 01-16-2009, 05:47 AM

get the numbers off the head , do research , it sounds like they might be early fullie heads . if you want alot of difference on the cheap side do a cam swap along with heaters and a true duel exgaust , along with under-drive pullys . i would never put unknown heads on my truck without knowing everthing about them period .
COMP Cams K12-249-4 - COMP Cams Xtreme Energy Cam and Lifter Kits - summitracing.com
or just the cam
COMP Cams CL12-249-4 - COMP Cams Xtreme Energy Cam and Lifter Kits - summitracing.com

shd

01-15-2009, 03:06 PM	#1
gmctrucks Senior Member Join Date: Nov 2006 Location: Houston,Texas Posts: 4,033	Heads Would these heads work or be better on my 1993 F/S 5.7 GMC truck? Or am I better off just staying with what I have plus then if I rebuilt the heads then it might start burning oil due to more compression. OK I forgot to mention it's a make offer deal. Thanks! GMC 2.02 and 1.60 valves, high lift springs, screw in studs, and guideplates drilled and tapped for late model a/c needs one 2.02 valve, big performance increase. also comes with headers for chevy truck.

01-15-2009, 03:36 PM	#2
mrjohnwayne Senior Moderator Join Date: Apr 2005 Location: Texas Posts: 3,722	depends on the cc of the head if it will build compression. if it is bigger than what you have it will lower compression.... They will work on you motor, but they might not be better. __________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4

01-15-2009, 07:00 PM	#4
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,300	Dumb question why do you want to do it are yours bad? a cam is worth its money and a little less work. either way if i pulled it down it would get a mild economy cam,. lifters,and double roller chain __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

01-16-2009, 05:47 AM	#6
silverhairdeere Senior Member Join Date: Feb 2008 Location: land between the lakes tn Posts: 1,184	get the numbers off the head , do research , it sounds like they might be early fullie heads . if you want alot of difference on the cheap side do a cam swap along with heaters and a true duel exgaust , along with under-drive pullys . i would never put unknown heads on my truck without knowing everthing about them period . COMP Cams K12-249-4 - COMP Cams Xtreme Energy Cam and Lifter Kits - summitracing.com or just the cam COMP Cams CL12-249-4 - COMP Cams Xtreme Energy Cam and Lifter Kits - summitracing.com shd Last edited by silverhairdeere; 01-16-2009 at 06:08 AM.

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01-15-2009, 05:46 PM	#3
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	aftermarket heads?? are they regular heads?? ported?? decked?? as john mentioned, are they 68cc, 72cc?? seems to be missing alot of info about the heads. cant use some heads out there as some have angled intake bolt holes. forget what they are called.

01-16-2009, 12:49 AM	#5
gmctrucks Senior Member Join Date: Nov 2006 Location: Houston,Texas Posts: 4,033	All I have is the info I wrote and I know that replacing the cam will help but I know that I have very little to choose from because of year and it's a TBI engine oh my heads are good it's just that I was thinking of getting a lot of HP for a cheap amount of money. But then my truck won't run like it does now and so on it's probably better if I leave it alone but I would love to get a 5.3 engine in it. 2008 chevy silverado engine

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