help with milling heads , pushrod compression
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help with milling heads , pushrod compression
Hi
I calculated that a .20 mill of 806 heads is about 5 mm taken off the bottom head surface wich is about half a centemeter ... is this correct and what will the chamber cc be after milling? (and how about .15-.10-.25 while your at it )
I have a 98 with a tr224 with 7.400 with that much of milling what will the compression be (with stock gaskets) and will I have to change to a shorter pushrod (7.350 or 7.375) just guess and help me I know a pushrod lenth checker but that`s not a practical method here (the only available are 7.400 and when the engine is opened can`t wait for more than a week for this to come).
thanks and if you provide the formulas and/or examples for other users help in searches then thanks even more.
I calculated that a .20 mill of 806 heads is about 5 mm taken off the bottom head surface wich is about half a centemeter ... is this correct and what will the chamber cc be after milling? (and how about .15-.10-.25 while your at it )
I have a 98 with a tr224 with 7.400 with that much of milling what will the compression be (with stock gaskets) and will I have to change to a shorter pushrod (7.350 or 7.375) just guess and help me I know a pushrod lenth checker but that`s not a practical method here (the only available are 7.400 and when the engine is opened can`t wait for more than a week for this to come).
thanks and if you provide the formulas and/or examples for other users help in searches then thanks even more.
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Originally Posted by GR33N GoblinM6
i thought 806 heads were 69cc's to start... not 64cc to start...
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806's are 5.3 heads? ive never seen a or head of a 5.3 head having casting # 806.. as far as i know the 806 heads were only used on 98 Fbody's and have a 69cc chamber.. the 853's were on the 99-00 cars.. and the 01-02 cars got the 241 67cc heads..
only head i know of with stock 64cc's is the 243 LS6 heads...
anyone else please confirm or set this straight?
only head i know of with stock 64cc's is the 243 LS6 heads...
anyone else please confirm or set this straight?
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Originally Posted by GR33N GoblinM6
806's are 5.3 heads? ive never seen a or head of a 5.3 head having casting # 806.. as far as i know the 806 heads were only used on 98 Fbody's and have a 69cc chamber.. the 853's were on the 99-00 cars.. and the 01-02 cars got the 241 67cc heads..
only head i know of with stock 64cc's is the 243 LS6 heads...
anyone else please confirm or set this straight?
only head i know of with stock 64cc's is the 243 LS6 heads...
anyone else please confirm or set this straight?
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#8
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yeah the 806 are 98 ls1 heads (wich is on my 98 car) 67.8 or 68 cc chambers as I`ve read here .... damn .20 mill and it`ll knock off only 3-4 cc? that`ll make it 64 only as a stock ls6...
1 inche is about 2.5 cm = 25 mm , .20 inche =5 mm ...
this is how I calculated (could be wrong) so is it a .020 something else other than inches?
I thought that since with stock afr and stock cam it`s 7.400with an aftermarket cam might go a little longer ..... but milled heads and aftermarket cam and longer than 7.400?
thanks for the replyies still waiting for more light on the subject.
1 inche is about 2.5 cm = 25 mm , .20 inche =5 mm ...
this is how I calculated (could be wrong) so is it a .020 something else other than inches?
I thought that since with stock afr and stock cam it`s 7.400with an aftermarket cam might go a little longer ..... but milled heads and aftermarket cam and longer than 7.400?
thanks for the replyies still waiting for more light on the subject.