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TFS215 and 4.060" Bore LQ9

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Old 05-28-2009, 02:17 AM
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Default TFS215 and 4.060" Bore LQ9

I've got these heads used with 64cc, can I use them for 4.060" bore LQ9 build?

CR wise it will be perfect. Just worried if chamber size is okay to use with 4.060".

It might not be optimum to use TFS215 with 4.060" bore, but I already have the heads, so, would like to use them if they will fit with no issues.
Old 05-28-2009, 09:03 PM
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i have them in milled form (60cc) on my 416 4.065 bore. so far so good. but idealy they should be opened up a bit.
Old 05-28-2009, 09:13 PM
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The biggest problem I had was trying to find someone to custom spec me a cam for the motor I was going to build using these heads.. I wanted to build a 408ci..
Old 05-29-2009, 05:36 AM
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Originally Posted by ls2 bait
i have them in milled form (60cc) on my 416 4.065 bore. so far so good. but idealy they should be opened up a bit.
What camshaft are you using?

I am going either TR224 or 240/244 (vindicator camshaft from Vengeance Racing) since I have both camshafts. I haven’t decided yet on camshaft.

It's daily driver A4 with stock stall TC. Motor is LQ9 427ci being built by Golen Engine Service.

I am open to camshaft suggestions.

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Old 05-29-2009, 09:44 AM
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Originally Posted by Denali08
What camshaft are you using?

I am going either TR224 or 240/244 (vindicator camshaft from Vengeance Racing) since I have both camshafts. I haven’t decided yet on camshaft.

It's daily driver A4 with stock stall TC. Motor is LQ9 427ci being built by Golen Engine Service.

I open to camshaft suggestions.
if you plan to keep the stock stall in there i would probably stick with a small cam,that bigger stick would like a bigger stall. going to use a 4.1" stroke crank ? that mill will be a torque monster with a small stick in there like that 224 but you need to find out how much compression you are going to have before choosing cams because it may have to much scr/dcr to run on pump gas with a small stick like that.
Old 05-29-2009, 10:11 AM
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Originally Posted by slow trap
if you plan to keep the stock stall in there i would probably stick with a small cam,that bigger stick would like a bigger stall. going to use a 4.1" stroke crank ? that mill will be a torque monster with a small stick in there like that 224 but you need to find out how much compression you are going to have before choosing cams because it may have to much scr/dcr to run on pump gas with a small stick like that.
4.125" crank. CR will be 10.4 with 0.050" thick GM MLS gasket. It would be 10.7 with Cometic 0.040" thick gasket.




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