Ordered 228r 112. Need help with some q's on 5.3 heads
04-14-2010, 05:51 PM
#1
Ordered 228r 112. Need help with some q's on 5.3 heads I finally ordered my 228r cam. Im trying to figure out a good budget head before i swap in the cam. I dont really know much about heads and i have read the stickies but im sure someone can come in here and enlighten me easily.
The reason i want to do 5.3 is because of the bump im compression and also the ability to find the heads really easily at a local junk yard and pop them off a totaled truck. then take them and get them milled and cleaned up.
What i dont understand is head gaskets. Can you pop on stock 5.3 heads with a specific gasket and be fine, or is it worth it to get them milled and also get the specific spaced gasket?
The reason i want to do 5.3 is because of the bump im compression and also the ability to find the heads really easily at a local junk yard and pop them off a totaled truck. then take them and get them milled and cleaned up.
What i dont understand is head gaskets. Can you pop on stock 5.3 heads with a specific gasket and be fine, or is it worth it to get them milled and also get the specific spaced gasket?
Last edited by twitchtwice; 04-15-2010 at 10:23 AM.
04-14-2010, 08:36 PM
#2
Their torquer series are a good choice, give them a call they are more than helpful, tell them what ya have and what you want, they will steer you in the right direction. Or you could go the custom ground way, That is the way I always go, but it gets pricey.....
the timing chain is not that expensive of a part, and depending on the mileage of the car I would recommend swapping it, along with the oil pump, 250 worth of preventative measure can save you thousands. The LS2 is a good chain, I have a double roller and if I did it all again I would not do the double, a ton of aggravation.
the timing chain is not that expensive of a part, and depending on the mileage of the car I would recommend swapping it, along with the oil pump, 250 worth of preventative measure can save you thousands. The LS2 is a good chain, I have a double roller and if I did it all again I would not do the double, a ton of aggravation.
04-15-2010, 02:29 PM
#6
Well, unless you're buying the 5.3 heads ported/already machined, then the valves and bowls will need to be enlarged to allow stock-sized LS1 valves. Consider this in your expense.
Another thing I picked up was your mentioning that the 5.3 heads were appealing due to the compression bump associated with them. Many people seem to dismiss the fact that any LS6 casting can be milled to achieve the SAME compression bump that you'd receive from the smaller 5.3 heads. Food for thought.
Another thing I picked up was your mentioning that the 5.3 heads were appealing due to the compression bump associated with them. Many people seem to dismiss the fact that any LS6 casting can be milled to achieve the SAME compression bump that you'd receive from the smaller 5.3 heads. Food for thought.
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04-15-2010, 03:25 PM
#8
Well, unless you're buying the 5.3 heads ported/already machined, then the valves and bowls will need to be enlarged to allow stock-sized LS1 valves. Consider this in your expense.
Another thing I picked up was your mentioning that the 5.3 heads were appealing due to the compression bump associated with them. Many people seem to dismiss the fact that any LS6 casting can be milled to achieve the SAME compression bump that you'd receive from the smaller 5.3 heads. Food for thought.
Another thing I picked up was your mentioning that the 5.3 heads were appealing due to the compression bump associated with them. Many people seem to dismiss the fact that any LS6 casting can be milled to achieve the SAME compression bump that you'd receive from the smaller 5.3 heads. Food for thought.
04-15-2010, 06:35 PM
#13
A valve job on stock valves/seats isn't expensive, and with the valve job and blend you're going to gain another 15hp out of that head. My machinist cuts my valve jobs for $200. I've known him since I was 19, but it just goes to show that it's not a super expensive item.
Pick up used 243's for $400, $200-$300 on a VJ, blend, and mill. You are at $700 for a head that can break 280 cfm with a 210cc stock runner. That is serious business for that minor investment!
04-16-2010, 01:12 PM
#14
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Any time I buy used heads, I will have the machinist do a slight mill just to clean up the deck surface. You never know if they were overheated/warped or just if the surface isn't straight.
A valve job on stock valves/seats isn't expensive, and with the valve job and blend you're going to gain another 15hp out of that head. My machinist cuts my valve jobs for $200. I've known him since I was 19, but it just goes to show that it's not a super expensive item.
Pick up used 243's for $400, $200-$300 on a VJ, blend, and mill. You are at $700 for a head that can break 280 cfm with a 210cc stock runner. That is serious business for that minor investment!
A valve job on stock valves/seats isn't expensive, and with the valve job and blend you're going to gain another 15hp out of that head. My machinist cuts my valve jobs for $200. I've known him since I was 19, but it just goes to show that it's not a super expensive item.
Pick up used 243's for $400, $200-$300 on a VJ, blend, and mill. You are at $700 for a head that can break 280 cfm with a 210cc stock runner. That is serious business for that minor investment!
