Pics of my Bo White ported 241's
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Originally Posted by ninobrn99
hey BO, have you done a set of 5.3's yet? Would the PRC dual spring kit fit them well?
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The PRC, PP, Comp spring kits fit all of the LS style engines. The link to JLaws post:
www.ls1tech.com/forums/showthread.php?t=286127
His heads were the first set I done with the newer intake port I am doing and flow #s will be posted as soon as I get em.
www.ls1tech.com/forums/showthread.php?t=286127
His heads were the first set I done with the newer intake port I am doing and flow #s will be posted as soon as I get em.
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When I deshroud and polish the combustion chambers on any of the LS style heads I remove about 3cc of material so I then mill the heads .018" or so to get the compression back were it was at. Its the same price for doin up a set of heads no matter the LS style head(5.3,5.7,6.0).
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Originally Posted by Bo White
The main thing you gain goin 5.3s is the compression increase which is usually 10 more at the wheels over the 5.7s.
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Bo, I sent you an email, but I misread your post...
So if I sent you bare heads to be ported with no assembly, and you ported them and sent them back, that is $450. The assembly and machining is where the extra $200 comes in? Does that $450 include milling the heads?
I'm looking at that $450 price and all I need is port work and milling to get the 5.7L heads up to 5.3L compression. Can that be done for $450? If so, I'm picking up a set of heads next weekend and will get them on the way to you shortly thereafter.
The cheapest price I have is were someone sends a set bare to me to just port with no machining and that is $450 shipped back.
When I deshroud and polish the combustion chambers on any of the LS style heads I remove about 3cc of material so I then mill the heads .018" or so to get the compression back were it was at
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I PMed ya. Correct, if someone sends me a set of bare heads to be just ported and shipped back it will be $450. Then they will take care of the machining and assembly on their end. The $650 price is me handling the machining and assembly too.
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Let me say that while I haven't gotten anything back from Bo yet (throttle body should be in his hands this afternoon via UPS, heads wont be going out to him for a few more weeks), his communication has been excellent. I'm emailing him a few times a day it seems asking this or that, and he always gets back to me fast and with exactly what I need to know. So far I'm having a very positive experience, and from other people, I definitely think I'm in good hands here.
Looks like I'm going to get some 853 castings ported and milled for 11:1 compression (static). I was going to have to take them somewhere else to have them milled but Bo is going to handle that for me for a good price, so it's all set. I just have to get these heads from my friend and ship them out to Bo. It'll be a while before I have everything together and on the car, and that works great with Bo's time table, but when the time comes, I'll be sure to post with pictures, dyno numbers, and time slips.
Thanks again for all the help Bo. I love this forum.
Looks like I'm going to get some 853 castings ported and milled for 11:1 compression (static). I was going to have to take them somewhere else to have them milled but Bo is going to handle that for me for a good price, so it's all set. I just have to get these heads from my friend and ship them out to Bo. It'll be a while before I have everything together and on the car, and that works great with Bo's time table, but when the time comes, I'll be sure to post with pictures, dyno numbers, and time slips.
Thanks again for all the help Bo. I love this forum.
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Originally Posted by Redlinez
The 5.3's must offer something other than a compression bump or everyone would just mill their 5.7's right? Flow velocity differences?
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Yes, when ya mill the heads .050" that makes the valves .050" closer to the pistons than they were before and when ya mill the heads .050" you have to run .050" shorter pushrods than before. Also, when milling large amounts the intake alignment becomes an issue.
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All good to know. Bo, sent you a PM and email. Looks like I'm going for the full $650 job w/ extra milling to get close to 5.3L compression. I'm running a smaller cam (221/221 .558/.558 112 LSA), the extra milling isn't going to cause an issue with PVC is it? And I'll need to get pushrods of what length? Thanks for all the help and any more.