piston question

[kevin]

can you use a grand national piston in a tta? i know about the compresion diff.thanks

 

[Razor]

can you use a grand national piston in a tta? i know about the compresion diff.thanks

You can. Just get the chip made with less timing, or use a thicker HG.

Or get custom pistons made.

 

[kevin]

ok thank you

 

[Chuck Leeper]

Or...

add a second alky nozzle and "step up"!!

 

[kevin]

heck ya!!!!!!!

 

[Quiky One]

How much higher would the compression be?

Jason

 

[KL Mallender]

Best yet is to use the slightly higher static CR in conjunction with a slightly hotter camshaft profile and enjoy the benefits of both, typically a 9.2-9.7 CR will like a 210-215 degree cam to get back to a 135-150 cranking pressure, good luck

Kevin.

 

[David Husek]

How much higher would the compression be?

Jason

The TTA heads are 38cc thats 10cc smaller the than 8445 heads which would bump the compression to 9:1. It's actually around 8.9:1. This calculation is for a complete unmachined stock short block using the stock head gasket.

 

[WS6]

Geeez, we need to straighten this out 'cause all my thread searching showed the TTA heads to be 41cc and the 8445's to 46 cc's

 

[Jicaju]

When mine came off an unopened motor they measured 41cc's.

 

[kevin]

got it running

and sounds mean as hell!