ALUMINUM HEADS GT40P TMH WHAT WORKS WHAT DONT

[nathanhoag]

MY GT40P HEADS CHOCKING OFF MY STROKER ENGINE LOOKING FOR IDEAS.

 

[Dono]

I used tw170's. They work with tmh headers. One plug is a bear to get to, but you can.

I didn't have to clearance each head where the header tubes hit the head, but nothing compromising performance. I now have a specific left, and right head. Lol. For whatever reason, Vroomzoomboom did not have to clearance his heads. Also, you will need different valve covers.

 

[nathanhoag]

can't use TW heads pistons wont allow it.

 

[Dono]

you sure about that? You using a high lift/high duration cam? High dome piston?
Mine is an interference motor, but the valves are fine as long as nothing bad happens (ask me how I know). My valves 'miss' the valve relief. I thought about modifying the eyebrow a bit, but its not an issue unless the valve train ends up moving at a different timing sequence than the pistons again.

Anyway...better get a second opinion.

 

[VR4]

I used tw170's. They work with tmh headers. One plug is a bear to get to, but you can.

I didn't have to clearance each head where the header tubes hit the head, but nothing compromising performance. I now have a specific left, and right head. Lol. For whatever reason, Vroomzoomboom did not have to clearance his heads. Also, you will need different valve covers.

Do you have the tmh gt40 or gt40p headers? I really want to put heads on mine but don't want to look for another set of headers

 

[Dono]

I had the gt40p heads, and the torque monster headers for a 2000 explorer (gt40p egr).

Now, TW170 heads with the same headers. As I said, I did actually have to grind a fair bit of head to allow the header flanges to sit tight against the exhaust port. Why @vroomzoomboom didn't, I have no idea.

 

[VR4]

I'm not worried about making things fit. I was concerned about spark plugs.

Thanks for clearing that up. I'll be looking into them again.

 

[Dono]

The only spark plug that's really difficult is the one drivers side at the fire wall. I modified a socket (Ground the end down) so I could slip it on. Even then, I can only get the plug most of the way out before I have to remove the socket and do the rest by hand.

 

[vroomzoomboom]

sorry dono, i did have to clearance mine.....twice. once while they were in the truck (didnt realize i had to until the motor was in and the header gasket lasted a old life of 5 mins) and i did it again after i had the motor out and saw they needed a bit more.

the first time i did it when it was in the truck (but this was taken when i had the motor out for the second time)

this was after i redid it

now what i want to know is why your pistons wont allow you to use tfs heads? they are 2.02 and unless your running a high lift cam, you should have clearance.
this is the cam i have in mine https://www.summitracing.com/int/parts/cca-35-556-8/overview/
its by all means no monster of a cam, but its also no baby either, and i didnt even bother looking for piston to valve clearance

 

[VR4]

The valve positions and angles are changed.

 

[vroomzoomboom]

has the engine builder verified they wont work? or doest the kit say it wont work? i would have the think the majority of strokers are set up for alum heads, and not cast heads

 

[VR4]

has the engine builder verified they wont work? or doest the kit say it wont work? i would have the think the majority of strokers are set up for alum heads, and not cast heads

I'm not saying they can't be used. Obviously they can. I'm just stating why it's claimed they won't work. As always clearances should be checked before final assembly

 

[nathanhoag]

art Number: 867-271097

PRO SERIES 331 SBFFlat TopBore: 4.030"Stroke: 3.250"Rod Length: 5.400"Compression Distance: 1.165"Dome Volume: -5ccGram Weight: 407Compression Ratio: 58cc 10.4, 64cc 9.7, 70cc 9.1
Short block builder said stay inline valve heads I'm running a small cam 35-349-8 xe264hr

 

[nathanhoag]

for whats its worth I got ahold of Bob Pasquale tmh I asked him what heads I could use having the tmh. #9601-50-ex-1
gt40x heads from ford racing any other head the headers will hang down an 1/8" into the port.
also asked if he was ever going to start production. waiting on reply