Aluminum heads

[autoxcuda]

Typically, the head choice is dictated by the budget and power goals.

When those are on the same page, you’re golden.

When the goals are bigger than the budget, that’s when it can get tricky.

Do you think TF240 out of the box can support 1hp/1cid @500 cid ?

 

[PRH]

Do you think TF240 out of the box can support 1hp/1cid @500 cid ?

That would be an extremely mild combo.

Not “motor home” mild, but about as rowdy as a 440 with bowl blended 906’s and a hemi grind cam(and even then, you’d have to have pretty low CR and/or a restrictive induction to keep things down near 500hp).

For something that acts more like a hot 440 with a 509 cam, TF240’s on a well thought out pump gas 500” could(should?) get you closer to 575-600hp.

 

[Oldiron440]

Do you think TF240 out of the box can support 1hp/1cid @500 cid ?

About the time the 270s came out a local racer was building a 48x inch 383 with 240 heads and actually considered the 270 heads but he had already paid for the 240s. His engine with unported 240 heads made 758 hp… I was there when it was run on the Dyno so don’t underestimate the power potential of the heads…

 

[fishmens67]

Do you think TF240 out of the box can support 1hp/1cid @500 cid ?

Moparmaga's 470 is pushing 685 hp with the trick flow heads, I'm looking for him to bust 700 with his additional porting on the heads and intake.

 

[autoxcuda]

At this point, need feedback from original poster on what is his:

• intended use is
• tuning skill level is
• expectations are

 

[Mopar Fred]

Cnc ported heads?

What’s the bore stroke and cam?

No they are not CNC ported heads. Here is a copy of my build sheet hope this helps.

 

[MOPARMAGA]

Do you think TF240 out of the box can support 1hp/1cid @500 cid ?

Yep, my 470 did low 600s with ootb 240s 11.4:1 compression.
685 with gasket match, decked for 12.9 compression and a incorrectly ported tunnel ram.

 

[cookietruck]

No they are not CNC ported heads. Here is a copy of my build sheet hope this helps.

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Thanks for the details. Great combo!

 

[BSB67]

I was at westech a few days ago and they were running a combo on the dyno that was almost exactly like what you described. 10.5:1 comp 512, trick flow 240s, 231/237 cam. It made huge torque. Like 630lb/ft at peak. But was way down on power and peaked really early IMO. Only like 530hp at 5400. Needed way more camshaft for the cubic inch.

You simply don’t have the full story to be making claims or conclusions.

Peaking at 5400 is probably correct for that size cam. Cam details matter.

Maybe the valve train was giving it up.

 

[BSB67]

I’ve never tested one with the port exits left at the std opening size, which is how they come as cast (and run on std port heads), but they work pretty well at MW size on heads with MW sized ports.

I never hear anyone mention the Maxwedge dual plane from Indy (2D?) as a viable option.

what are the thoughts on this ?

2D with standard port +600 hp is not hard. With the max wedge port, +650 hp. It can carry a surprising amount of rpm.

 

[BSB67]

The last thing you need on 500”+ is a two plane intake when they make 500 ft lbs of torque almost instantly with a single plane…

There is logic here. But you should not discount a good dual plane without data/testing.

 

[BSB67]

I think all yall are talkin to yourselves now. lol

And truly enjoying it.

 

[Mopar Fred]

Thanks for the details. Great combo!

Chris at performance injection equipment in Delaware built this engine for me

 

[MOPARMAGA]

You simply don’t have the full story to be making claims or conclusions.

Peaking at 5400 is probably correct for that size cam. Cam details matter.

Maybe the valve train was giving it up.

He's really close, my 470 was doing exactly what the claims or conclusions were.

 

[BSB67]

He's really close, my 470 was doing exactly what the claims or conclusions were.

I’m not really sure to what you are referencing. Doesn’t seem like your motor has much in common with his, unless I’m missing something.

 

[MOPARMAGA]

I’m not really sure to what you are referencing. Doesn’t seem like your motor has much in common with his, unless I’m missing something.

It had a peak of 5400, it had trickflow 240s .
Funny thing is that 512 made peak power at the same rpm as my 470. I had much more duration at .050 260-264. i was referencing your post 59

 

[BSB67]

It had a peak of 5400, it had trickflow 240s .
Funny thing is that 512 made peak power at the same rpm as my 470. I had much more duration at .050 260-264. i was referencing your post 59

Right. Way different.

Sounds like you were disagreeing with me and my comment on his conclusion on a motor he doesn’t own, or fully followed to the end.

 

[MOPARMAGA]

Right. Way different.

Sounds like you were disagreeing with me and my comment on his conclusion on a motor he doesn’t own, or fully followed to the end.

What's way different? With the same heads they both have the same opportunity for power.
You mentioned peaking at that cam size being correct, I showed a larger cam making the same peak. Lol & right I did disagree with that when you also added the camshaft details.

 

[PRH]

-512 is 9% bigger using same sized heads
-pump gas compression
-single carb vs TR w-dual 4bbl
-231@.050 HR vs 260@.050 SFT

And……tested on different dynos.

I’ll say it this way, if I took that 512 and upped the CR to be equal to the 470, and added the 260@.050 SFT cam……..it wouldn’t peak at 5400 anymore.

 

[MOPARMAGA]

Ill be seeing another out of the box set of 240s on the Dyno soon
Single carb, 11.5:1 272-278 solid flat tappet

 

[PRH]

cubes?
Headers?
Intake?
Carb?
Cam lsa?

 

[MOPARMAGA]

cubes?
Headers?
Intake?
Carb?

Sorry my wife was yelling at me to get off the phone.
470, 2 inch primary headers, I think dougs
Track heat and a 750. I'm looking for a larger 4150 so he can test it, 950xp or 1050

 

[PRH]

I’ve never tested a TH intake with an adapter/4500 carb, but my expectation is that it would have the edge over a 4150.
Maybe a good carb with a fancy 4150 spacer might even things up.

 

[MOPARMAGA]

I’ve never tested a TH intake with an adapter/4500 carb, but my expectation is that it would have the edge over a 4150.
Maybe a good carb with a fancy 4150 spacer might even things up.

Yeah I agree. if I had a spacer I'd test my 4500 but I don't.
I guess I should have welded a flange and ported my th intake. I have a 2 inch super sucker he can test. Those things worked well on both my versions so far.

 

[PRH]

Did you ever test your 470 with a single carb?
If so, what carb/intake, and what did it make?