5.7 confuse
09-03-2008, 05:30 PM
#11
Go5.3tt06 have you looked into just buying a LS1/LS6 block? I was going to do almost what you were doing with my 4.8L but after looking up cost for machining my block it would be just better to start off fresh. I believe it lists for about $1,200. You would still need to have it bored if you wanted to use 3.905 pistons. Everything else from your 5.3 would bolt up. Thought I would just throw this out there.
09-03-2008, 09:32 PM
#12
Go5.3tt06 have you looked into just buying a LS1/LS6 block? I was going to do almost what you were doing with my 4.8L but after looking up cost for machining my block it would be just better to start off fresh. I believe it lists for about $1,200. You would still need to have it bored if you wanted to use 3.905 pistons. Everything else from your 5.3 would bolt up. Thought I would just throw this out there.
09-03-2008, 11:35 PM
#14
Flat piston? Then I think 317 heads will not work for that? Also I need find good piston for NA/BOOOOOOOOSSSST I am so hell confused why there have several different for piston like dish, dome, diamdon, flat piston. Is anybody who is tech here who experince with pistons yet? Id like to have some good info and idea.
Last edited by Go5.3tt06; 09-03-2008 at 11:45 PM.
09-03-2008, 11:44 PM
#15
Which do you think I should to pick one?
http://www.sdparts.com/product/KITSD...RingCombo.aspx
http://www.sdparts.com/product/LS131...edPistons.aspx
Last question I need to know what size of CR best for use for daily drive street/strip, tow sometimes from pull jeep or atv. Not as often... Just for N/A for now then later BOOST turbo
And I think Im going run SCAT I beam rods. But last one need to know about piston and want all correct from 317heads. Able I run OEM head gasket? Or Have to get special one?
http://www.sdparts.com/product/KITSD...RingCombo.aspx
http://www.sdparts.com/product/LS131...edPistons.aspx
Last question I need to know what size of CR best for use for daily drive street/strip, tow sometimes from pull jeep or atv. Not as often... Just for N/A for now then later BOOST turbo
And I think Im going run SCAT I beam rods. But last one need to know about piston and want all correct from 317heads. Able I run OEM head gasket? Or Have to get special one?
09-04-2008, 12:02 AM
#16
Tribe Shaman
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your 5.3 crank, blancer, and flywheel are just fine to reuse.
if you go for a stock bore 3.893 and use your 5.3 heads, you will have a compression
ratio of almost 11.0 to 1
if you get a hold of some LS6 heads, it will have a compression ratio of 10.4 to 1.
if you get a hold of some LS1 heads, it will give you a compression ratio 9.5 to 1
if you get a hold of some 6.0 heads, it will give you a compression ratio 9.0 to 1.
your 5.3 crank is the same as the 5.7 crank, it's just not drilled for reduced weight.
your 5.3 rods are the same as the 5.7 rods, all you need is a set of ARP bolts.
everything else on your 5.3 will bolt right on to a 5.7.
now some words of wisdom.
in the back of your motor is a set of little dumb bells, white plastic with an O ring.
take these out before you send it off to the machine shop, put them in a safe place for the rebuild.
because if you send the moter with them in it, your not getting them back.
with out the little dumb bells your oil pressure is screwed.
if you go for a stock bore 3.893 and use your 5.3 heads, you will have a compression
ratio of almost 11.0 to 1
if you get a hold of some LS6 heads, it will have a compression ratio of 10.4 to 1.
if you get a hold of some LS1 heads, it will give you a compression ratio 9.5 to 1
if you get a hold of some 6.0 heads, it will give you a compression ratio 9.0 to 1.
your 5.3 crank is the same as the 5.7 crank, it's just not drilled for reduced weight.
your 5.3 rods are the same as the 5.7 rods, all you need is a set of ARP bolts.
everything else on your 5.3 will bolt right on to a 5.7.
now some words of wisdom.
in the back of your motor is a set of little dumb bells, white plastic with an O ring.
take these out before you send it off to the machine shop, put them in a safe place for the rebuild.
because if you send the moter with them in it, your not getting them back.
with out the little dumb bells your oil pressure is screwed.
09-04-2008, 01:44 PM
#17
your 5.3 crank, blancer, and flywheel are just fine to reuse.
if you go for a stock bore 3.893 and use your 5.3 heads, you will have a compression
ratio of almost 11.0 to 1
if you get a hold of some LS6 heads, it will have a compression ratio of 10.4 to 1.
if you get a hold of some LS1 heads, it will give you a compression ratio 9.5 to 1
if you get a hold of some 6.0 heads, it will give you a compression ratio 9.0 to 1.
your 5.3 crank is the same as the 5.7 crank, it's just not drilled for reduced weight.
your 5.3 rods are the same as the 5.7 rods, all you need is a set of ARP bolts.
everything else on your 5.3 will bolt right on to a 5.7.
now some words of wisdom.
in the back of your motor is a set of little dumb bells, white plastic with an O ring.
take these out before you send it off to the machine shop, put them in a safe place for the rebuild.
because if you send the moter with them in it, your not getting them back.
with out the little dumb bells your oil pressure is screwed.
if you go for a stock bore 3.893 and use your 5.3 heads, you will have a compression
ratio of almost 11.0 to 1
if you get a hold of some LS6 heads, it will have a compression ratio of 10.4 to 1.
if you get a hold of some LS1 heads, it will give you a compression ratio 9.5 to 1
if you get a hold of some 6.0 heads, it will give you a compression ratio 9.0 to 1.
your 5.3 crank is the same as the 5.7 crank, it's just not drilled for reduced weight.
your 5.3 rods are the same as the 5.7 rods, all you need is a set of ARP bolts.
everything else on your 5.3 will bolt right on to a 5.7.
now some words of wisdom.
in the back of your motor is a set of little dumb bells, white plastic with an O ring.
take these out before you send it off to the machine shop, put them in a safe place for the rebuild.
because if you send the moter with them in it, your not getting them back.
with out the little dumb bells your oil pressure is screwed.
What kind of piston Should I run flat,dish, dome or Diamdo piston?
Have you thought about those which better for my set up for street/strip, drive daliy, tow rarely when really need. Do na then do turbo boost later.
But I wonder do I have to get special head gasket or able to use oem?
Look link-http://www.sdparts.com/product/26125716/6125IBeamLS1LS2LS6ScatConnectingRods.aspx
http://www.sdparts.com/catalog/lsgen...edPistons.aspx ( not sure because need to know what number of cc...
http://www.sdparts.com/catalog/lsgen...edPistons.aspx
I can see there have two choice to bore 3.898 or 3.905 I think I should go 3.905 Let me know if I do any wrong. I need to know which is best heads like ls6,ls1, 6.0 and how much cost they are? Texas performance not have one. It only 5.3 I not sure which one. I realy need to know. What size of CR best for na and boost what number of cr. I know turbo like lower ratio. But want to find right cr for na and turbo. That is all I need to know simple things. Thank for help.
09-04-2008, 11:59 PM
#18
Tribe Shaman
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you do not need to have your crank rebalanced, just checked to see if it needs to be ground for over sized bearings, if it does not need to be ground then get it polished and pick up a standard size bearings for the mains and rods.
if you want to run scat rods, that is fine, or you can use the arp bolts on your stock rods.
3.898 = 346 cubic inches
3.905 = 348 cubic inches.
now the thing about performance is that, IT COST MONEY.
now what do YOU want to build,
a NA high compression motor or a low compression turbo motor.
unless you tell us what way you want to go, it is a little hard to help you to get their.
if you want to run scat rods, that is fine, or you can use the arp bolts on your stock rods.
3.898 = 346 cubic inches
3.905 = 348 cubic inches.
now the thing about performance is that, IT COST MONEY.
now what do YOU want to build,
a NA high compression motor or a low compression turbo motor.
unless you tell us what way you want to go, it is a little hard to help you to get their.
09-05-2008, 12:46 AM
#19
I would DEFINITELY have to disagree with this. I even used an actual 5.7 crank and put Maule pistons (3.898) with Scat I beams and had it balanced. The machinist said he had to take a lot weight off the counter weights. The new pistons and rods where MUCH lighter then the stock ones.
Balance is very important in a motor that's going to turn 6000+
I'd have Maule Flat top pistons, 3.898, (-4cc valve relives), Scat I beams rods and 317 72cc heads. That puts the compression at a nice 9.25 to 1. NA and Boost friendly Oh and I used GM 6l MLS head gaskets.
Balance is very important in a motor that's going to turn 6000+
I'd have Maule Flat top pistons, 3.898, (-4cc valve relives), Scat I beams rods and 317 72cc heads. That puts the compression at a nice 9.25 to 1. NA and Boost friendly
Oh and I used GM 6l MLS head gaskets.
Last edited by kbracing96; 09-05-2008 at 12:52 AM.