What Trick Flow Head?

[rumblefish360]

Thanks rumblefish360. I've seen you post that before.
How would TrickFlow 240s affect my hood clearance, if at all?

I did? My bad!

Heads don’t effect hood clearance. Just the intake, carb and gaskets used between them.
If your running a plate system underneath the Holley’s, you’ll have a problem.

The only other way around it I can think of is to rid yourself of the plate system and go to a nozzle tapped ether under the carb or on the porteunners at the head.

If your into the work needed to make a plate system work and fit, well, there be your mountain to climb.

 

[rumblefish360]

Not mine.

 

[biomedtechguy]

Should not affect any hood issues. N.O. is still on the plate late Nov. If your car is down we can still chew the fat. Staying at the Roosevelt, heard they have a good bar!

Roosevelt Hotel in the heart of downtown New Orleans. Swanky hotel with lots of rich history. In the 70s and 80s (in my teens and 20s) I spent a lot of nights in the French Quarter. I even went to a few really nice restaurants and other hot night spots in the 2000s. Now you couldn't pay me to go downtown, and I would be armed. Be careful. You can PM me and let me know your broad itinerary. I have some work tentatively planned for the end of the month, but let's see what happens.

 

[biomedtechguy]

go to a nozzle tapped ether under the carb or on the porteunners at the head.

I've seen that. My thoughts are if I add nitrous, it is only going to be a 100-200HP max system and I don't know if you can have an efficient port nozzle system at that low of an output. There is st least one forum member running a N96 hood and airbox like my 70 Roadrunner uses and a 6bbl with NO2 spray plates.
I also met a guy who knows the originator of Nitrous Oxide Systems and he said that the guy could make a custom system for my intake and Holley carbs and it would only cost about $200 more than an off the shelf system.

 

[rumblefish360]

I’m not a wiz by any stretch on the NO2 systems in and outs, however! I have seen the nozzles tapped at the intakes port end for a long time. I don’t think low powered shots are the problem, just the reverse. And only in possible problems and there troubles.

If anything I would think a low power shot is more manageable and easy to regulate.

I’d do the custom route.

 

[biomedtechguy]

The thing about low power shots of Nitrous according to the Nitrous Express guy is that the nozzle is made to provide a range of output, and when you're on or below the low end of that range it doesn't perform efficiently.
I'll post back up if I go down the 3x2 NO2 road.
TrickFlow 240s...those are just a matter of time and money!

 

[rumblefish360]

Less flow equals harder to meter correctly?
Makes sense.
Change of nozzle size possible????

 

[biomedtechguy]

Less flow equals harder to meter correctly?

Basically yes. He said that the nozzles work best in the middle to high end of their inherent design, and at the low low end atomization is not the best.

 

[not so famous bob]

I did? My bad!

Heads don’t effect hood clearance. Just the intake, carb and gaskets used between them.
If your running a plate system underneath the Holley’s, you’ll have a problem.

The only other way around it I can think of is to rid yourself of the plate system and go to a nozzle tapped ether under the carb or on the porteunners at the head.

If your into the work needed to make a plate system work and fit, well, there be your mountain to climb.

They do if they are raised port !

 

[biomedtechguy]

They do if they are raised port !

Thanks Bob.
Like I wrote, I had considered the affect of going to Max Wedge sized ports of the TF270s, and from what I can tell that would increase the power output capability of the motor, but that would also require a higher RPM range and the appropriate cam to do it. Heavier springs, other heavier duty parts, Wilson manifolds said they could mod my aluminium Chrysler/Edelbrock 6bbl intake to match the larger ports,
BUT
especially if I go to a stroker motor, which I was "sure" I was going to do until I saw a bored stock stroke 440 get very close to 6XX HP and had a beautiful, long, flat torque curve, so now I'm not sure if it's worth the extra cost of a stroker kit, but if I go stroker the higher RPMs and the additional stresses of a stroker design along with the 270 heads just doesn't seem to fit my application, and the dual plane intake is not the best way to make the most of the larger ports either.
I want to keep the functionality of the N96 hood scoop (once I get all of the parts for it) so that also means keeping the current intake too. The dual plane intake and 3x2 carbs have held their own in similar builds compared to modern 4bbl carburetors and modern intakes, with an equal or superior torque band, and only giving up a few horsepower.
Naturally I defer to any of the more experienced guys here, but I absolutely am sticking with a 3x2 intake system, that works with the N96, even if it is the FiTech or F&B fuel injection system.

 

[33 IMP]

I have a new edelbrock sixpack manifold that i bought for cheap, because someone ( i think a reputable nitrous plummer) had given up on it, trying to get a concealed nitrous system underneath it. I'm just going to plug the 1/8 pipe holes with either aluminum plugs or tig weld.
I know it's a fairly new manifold by the core shift (substantial). This was a 440 manifold.

 

[rumblefish360]

They do if they are raised port !

So are they a raised port?!?!?!

No, I didn’t think so.

When your using a raised port head, are you using a mod or low level dual plane?

No, I didn’t think so.

If your going this route that your building a serious enough engine, do you care about hood clearance?

If you are, I think someone may need to rethink something!

 

[wagonman]

Got the new T.F. 240s today Real nice looking. Compared to the Stealths it is like looking at a Diamond is instead of a chunk of Coal. Hope they perform as good as they look. Now on to picking a cam.

 

[biomedtechguy]

I was this " " close to getting the TF240s, that I am DEFINITELY GETTING, but with the money I had at the time I knew I was going to fall short.
Could I have bought the heads and springs combo? Absolutely. But ponying up for the Harland Sharp rockers, custom pushrods, and other bits and pieces that would have taken the heads from in the box to up and running was a bit much at the time..
One day, hopefully soon, I'll be posting about MY TF240 experience!
Congratulations wagonman!

 

[440fish]

Thanks Bob.
Like I wrote, I had considered the affect of going to Max Wedge sized ports of the TF270s, and from what I can tell that would increase the power output capability of the motor, but that would also require a higher RPM range and the appropriate cam to do it. Heavier springs, other heavier duty parts, Wilson manifolds said they could mod my aluminium Chrysler/Edelbrock 6bbl intake to match the larger ports,
BUT
especially if I go to a stroker motor, which I was "sure" I was going to do until I saw a bored stock stroke 440 get very close to 6XX HP and had a beautiful, long, flat torque curve, so now I'm not sure if it's worth the extra cost of a stroker kit, but if I go stroker the higher RPMs and the additional stresses of a stroker design along with the 270 heads just doesn't seem to fit my application, and the dual plane intake is not the best way to make the most of the larger ports either.
I want to keep the functionality of the N96 hood scoop (once I get all of the parts for it) so that also means keeping the current intake too. The dual plane intake and 3x2 carbs have held their own in similar builds compared to modern 4bbl carburetors and modern intakes, with an equal or superior torque band, and only giving up a few horsepower.
Naturally I defer to any of the more experienced guys here, but I absolutely am sticking with a 3x2 intake system, that works with the N96, even if it is the FiTech or F&B fuel injection system.

Sounds like you're on the right track. Personally i think 270 heads would be a waste with a 6 pack manifold. No where near the high rpm flow out of that intake that those heads are made for.

on the stroker front i cannot see any reason not to go that route? I mean it doesnt cost any more if you are buying a new rotating assembly. If you are sticking with what you have then yes i get saving the $$$

 

[wagonman]

7 steps forward 1 step back. Got all the pistons on the rods except 1 where I fubared a spiro lock. 1 out of 16 aint to bad I guess. Little bastards!! So the short block is on the back burner till I get a new one. So on to sorting out the new TF 240s. Got Source rockers with the junk heads so started putting them on the TFs. One issue is the hold down bolts. Source give you 6 short and 4 long for their setup. The TFs need all short. Also the head bolts wont work. Ordered a 5 pack of ARP bolts for the shafts and head bolts. Was able to get 1 head together as far as shimming the shafts and took a swipe pattern on the valve tip. Perfectly centered with no shims under the shaft. A good day so far time to crack a cold one. As soon as I get down off this hill to civilization will post some picks.

 

[wyrmrider]

Centered is not the goal- narrow pattern is- post some pics
are we having fun yet

 

[wagonman]

As they used to say, Learning is FUNdamental. I qualify for the mental part.

 

[mentor70]

thats crazy that we are all thinking alike!

i recently ditched my 440 source heads for the TF 270s....after i saw Andys article on them...and sold off my comp cam rockers for the Harland Sharp...damn these things are bad ***!

gonna break this in with my modified Mopar Perf dual plan before i switch over to either the Mod man 2x4 or the Mancini racing CNC max wedge piece...have decided which way to go on the intake yet.

bottom end is stock stroke 440 with Icon forged pistons and a Lunati hydraulic roller cam.

 

[wagonman]

Here you go Wrmryder. This is on the bench, checking the rockers centered on valve.