Which heads for the best performance and correct CR?
Sep 17, 2005 | 09:39 PM
#21
Originally Posted by 1slow01Z71
Going to go with stock 6L crank Im going to be building this myself along with some help from MjHoward hopefully if I give him enough beer. LOL. 
The block will be bored .030 over so Im goign with a set of forged pistons that will match thtta cylinder diameter. I would like to have a high 9 to low 10 CR so I never have to worry about detonation on a hot day or anything. I have been talking to my local speed shop guy today and he has called a few of his buddeis that deal with more of the late model stuff than he does and think we just baout have it figured out for the most part. Ill know alot more monday when a few emails are returned about some possible blocks to start off with hopefully I can pick one up cheap along with a set of 6L heads.
The block will be bored .030 over so Im goign with a set of forged pistons that will match thtta cylinder diameter. I would like to have a high 9 to low 10 CR so I never have to worry about detonation on a hot day or anything. I have been talking to my local speed shop guy today and he has called a few of his buddeis that deal with more of the late model stuff than he does and think we just baout have it figured out for the most part. Ill know alot more monday when a few emails are returned about some possible blocks to start off with hopefully I can pick one up cheap along with a set of 6L heads.
there are alot of guys on here more familiar with the machining, before you buy everything I would have all the info planned out and know what work is going to be done etc..
Sep 17, 2005 | 09:50 PM
#22
Originally Posted by 1slow01Z71
No problem man I didnt take it as any disrespect obviously you are a pretty good guy since you seem to be well respected and and friends with alot fo the guys on the forum. BTW I voted for you on teh Blownchevy/Moregrip race pole got vote for the guys driving the tanks even though my **** isnt nearly as heavy as yours. 
Honestly, I am still new to this late model modding stuff as well
I've been Hot Rodding for almost 20years now, started at 14yrs old(71Chevy Fullsize), but only have about 1yr into all this electronic age stuff
Good luck!
Sep 17, 2005 | 09:52 PM
#23
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Tin Foil Hat Wearin' Fool
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Joined: Oct 2004
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From: Austin, TX
The block is going to be bored .030 over to gain a little ci and make sure I have nice new metal to work with. Then block will be blue printed. The block will be magnafluxed(sp?) along with the crank and rods just for some added insurance. The rotating assembly will be balanced also. The pistons will be chosen to achieve the correct CR once all the machine work is done. The heads will have 72cc combustion chambers since they will be LQ4 heads. The pistons will be forged and I will add some arp rod bolts for some strength. The heads will recieve a little port and polish job, valve job, new guide seals, and stainless steel valves since I will be spraying. Im not a complete moron I have plenty of help its just that they are stuck in the 60s-80s and dont know a thing about the technical info needed for this newer engine build but they know the basics and what is needed for a good base as far prep work is concerned. Thanks for the help. I am going to start off by getting a good 6L block then send it off to the machine shop to get all the stuff done to it the go from there. If there si something Im missing let me know.
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