413 Recipes Please!

[Hankohop]

Hey everyone, I currently am working through a build of my second gen Charger with a 383 4-speed. It's a mild set up and down the road I want to do something special with the 383. between now and then, I have a 413 with two cracked pistons sitting in the shop.
Now, I really haven't cracked it open to find out exactly what went wrong but I love the idea of taking the engine and putting together something cool.
I know the 440 would be a better starting point and may be the way to go if this thing is totally mangled BUT that isn't the point. I want some knowledge here. Some recipes for 413 power or some old school tricks to make some power. Maybe even some stroker tricks if there are any.
Right now, nothings on the table and there's not even a real direction in mind. Just a post for a fun discussion. I appreciate any feedback guys!

 

[rlem1977]

https://www.forabodiesonly.com/mopar/threads/help-with-413-build-please.170676/

http://www.hotrod.com/articles/ccrp-0711-1964-mopar/

https://www.bangshift.com/forum/forum/bangshift/tech-section/4715-the-413-mopar

 

[lewtot184]

i think your biggest problem will be pistons. other than that about anything you can do to a 440 you can do to a 413.

 

[Glenwood]

Pistons are a big expense compared to a 440 but I used the 413 anyway. Went with the 73 413 block bored to 4.25. Original forged crank. New ohio hbeam rods and custom carillo pistons. All balanced.
Voodoo 60603 cam.
Have 906 heads on it for now but I'm replacing them with eddys when I can.

 

[wyrmrider]

glenwood do you know the CH of the pistons and what cranking compression you ended up with?
good choices IMHO I did not no Carrillo made pistons but then it's not the same group I delt with in the 60's 70's

 

[Garys1969RR]

My first race motor was a 413! Arias dome pistons, 915 ported heads, stock valves. TM 7 intake, Holley 780, Crane .510 lift solid cam with 292 total duration. That thing screamed! Well with 13.5 to 1 C Ratio, most of em do. Maybe that's why Chrysler offered an 11 to 1 and a 13 to 1 C Ratio version of the 413 Stage I max wedge . The higher C ratio motor put out 10 or 15 more horsepower!

 

[wyrmrider]

To make the 13:1 work you had to put a fire slot in the dome
otherwise the far side would not light up but would detonate- took a while to figure that one out lousy head design
darn pistons were so heavy
they claimed they used flow bench but if they did they left a lot on the table

 

[Glenwood]

glenwood do you know the CH of the pistons and what cranking compression you ended up with?
good choices IMHO I did not no Carrillo made pistons but then it's not the same group I delt with in the 60's 70's

Here's the spec sheet for the pistons. With a CH of 2.060, they ended up in the hole .019 and tested hot at 155psi.

 

[wyrmrider]

.019 wow I usually get that with 6-pack height pistons
good compression- something you can work with
Even The KB's do not have that high a CH

 

[HT413]

You can get cast pistons from Hughes. Never saw anyone that stocks forged piston for a 413. Gonna be cast or custom..

http://www.hughesengines.com/Index/...vbGV0ZSBFbmdpbmVz&level1=NDEzIEJpZyBCbG9jaw==

 

[lewtot184]

buying custom pistons isn't difficult, but you do need to know head volume to get the correct compression ratio. wiseco used to be fairly economical compared to some others.

 

[Garys1969RR]

Also remember on those pistons that Carillo makes, the valve reliefs add about 7 cc of volume to the combustion chamber. This is true of most any piston with valve reliefs. But a dome piston from Ross can reduce chamber volume by as much as 14 cc, even with generous valve reliefs.

 

[Glenwood]

I've been trying to decide on what head cc to pick. Looks like the eddy 75cc will push the cr to about 10.4 but I'm not sure if this is ideal. The thinnest cometic gasket is .027 which makes the quench or squish at .046. Probably fine I thought the target was to get below .040 on pump.

 

[wyrmrider]

it's at .050 where quench starts to go away faster although you still get some squish turbulance
you should be fine
spend time on your dist curve IQ stresses this and I agree

Hughes pistons are Egge in so cal check with them also
part number for Carillos- I did not see anything even close in their catalogue

 

[lewtot184]

believe john erb said that past .060" is where quench starts to diminish. use .040" as a minimum. even if quench is near .060" a carbon build up will reduce that number. use a quench head with a piston having a 2.065" pin height and something like a 10cc d-cup machined into it. I wouldn't push static compression if pump gas is desired. people won't consider carbon build up on builds which seems counter productive to me. around .010" of carbon build up can increase the static ratio 1/2 point and .010" isn't much. i'd also look at a .990" pin and a conventional type ring pak.