PRO1 23° 245cc CNC Heads

[fastford]

Will they make power on a SBC 406

i will take a shot , yes they will , thing is you never stated where you want to make power , just a general question so my answer is general as well , maybe you can get perfcon to post that cam shaft specs he had in that 362 , i would like to see them as well......

[perfconn]

Intake-256*@ .050
Exhaust-266* @ .050
Ground on 106*-installed on 101.5
Using 1.90-1.80 rockers
It's perfconn.perfcon is just another troll.

[fastford]

sorry about that , ive never payed any attention , any way , installed on 101.5 ? where does that engines torque curve peak ?

[Kromulous]

He never did say what fuel he plans to run, or did i miss that?

Whats max piston speed for a 406, 8800 or better?

Maybe the OP can post that, what fuel and or octane? and what kind of parts etc, quality.

Just like a lot of the post on here, its really dependent on what the engine is. A top tier 406 on alky, or a low budget build on 110 gas. Its gonna vary greatly.

An example, we had an old SLM Engine, 430, 4 inch stroke, that was built wrong, and we had to twist to 9200 to get it to "run" it had good USA parts in it, but that is not the best idea to do. We backed it off for years but always struggled with it because of that. So doing it right the 1st time pays dividends.

[perfconn]

649hp @ 7100rpm
529# torque @ 5600rpm

[fastford]

that much head peaking at 5600 on a 362 is impressive , what was lift at the valve ?

[perfconn]

.704 - intake
.691 - exhaust

[perfconn]

This same topend (brodix track 1's-241cc) made 714hp on a 409ci (4.165 X 3.75) engine before I pulled it off and put it on the 362ci.

[Krooser]

Funny how I wanted more lift from the cam I was having ground but my cam guy insisted I was outta whack in the head. I was looking for mid .600’s and he insisted all I needed was about .560.

Well after a back and forth he ground a .580-ish one for me. And I bought a house grind Howards ground with .599/.616 lobes on a 108. Hope to get both on a dyno to see the difference.

These are FT grinds btw. All of my buddies rollers are in that mid 600’s range in their 362 spec motors. Mine is a 388 with 294 cfm flow on the intake side. Iron heads.

[Kromulous]

I think he is trying to focus on the bell curve, and the width of that lift profile, instead of how high the lift peak is.

Did he say to increase the rocker ratio ?

294 cfm isnt bad with a iron head, how big is the port? 220 or bigger?

[perfconn]

Any cam ground on 108* lobe seperation won't work very good ina 350-362 ci. In a 415-430 they work good.The raised runner iron heads will flow 342cfm @ .700 with a 260cc port.

[perfconn]

Just finished another 362ci with Brodix Track 1 heads.Heads were 245cc intake runners.Peak numbers were 647hp @ 7200 and 514# torque @ 5500.

[fastford]

what were the numbers at 3500 ?

[perfconn]

I don't start dyno pulls until 4500.Motor will never see 3500 unless it under caution.

[fastford]

10/4 , i was just curious ....