Quench

[gtxrt]

No. I used 0.040 piston to head, and 78 cc.

With your numbers I still get 10:1. Again, details matter.

are you using 4.21 bore

 

[gtxrt]

No. I used 0.040 piston to head, and 78 cc.

With your numbers I still get 10:1. Again, details matter.

 

[BSB67]

are you using 4.21 bore

Oops. I used 4.28.

 

[gtxrt]

Oops. I used 4.28.

again details matter lol . that was back in 2004 I think mine came out to 9.8 now that I think about it. it was a 1965 Chrysler 300L had to be careful with the total timing for pinging. it was a heavy car.

 

[BSB67]

again details matter lol .

That made me laugh.

 

[33 IMP]

Yes I read post 3, i understand you need a dome piston with open chamber heads, but with a closed chamber head can't you just use a flat top piston and maybe deck the block or mill the head, how do you get a good quench though without getting to much compression, that may not be possible I have read you can run more compression with aluminum heads though

D-shaped dish in the piston. For a 413? Expensive CUSTOM piston.
(Pretty much anything other than a cast rebuilder piston for a 413 will be custom, ..... and expensive.)
Edit : I didn't read the whole thread before opening my mouth. I see now the answer has been covered. Thanks.

 

[BSB67]

D-shaped dish in the piston. For a 413? Expensive CUSTOM piston.
(Pretty much anything other than a cast rebuilder piston for a 413 will be custom, ..... and expensive.)

Yep, that too

 

[RemCharger]

That made me laugh.

Yeah he kinda got you there lol

 

[gtxrt]

been using auto-tech or called race-tech same thing. a lot better price then je or diamond. you need the right piston lighter weight for performance and less pressure on your bearings, thin rings, stronger plus you get the right compression height and compression. it could keep you from decking the block to save money or save somewhere else but not on your pistons.