I guess it depends on what you consider overpriced? Plenty of used examples out there. I paid $600 fresh out of the machine shop for my set. Good for 60hp over stock and knocking 50lbs off the front end of your car. The TFS and AFR's will admittedly make slightly more horsepower out of the box, but the difference isn't vast.Under drive pulleys are pointless they weaken the charging and cooling system. for what 3hp.....
Gt40x heads are IMHO overpriced for what you get. better to get gt40p heads and headers. oh and a new cam.
What gain difference would it be between gt40x and tfs 170s? Would the tfs out of box be that much better then the x heads?
So the TFS 170's bested the GT40X's by 18hp/11tq on an engine dyno, through a big breathing carb/intake and an open exhaust.
YESResale value too. Some people like to stick to Ford parts too so there's that. TFS is very popular with 5.0's and AFR too. It's up to you.
@karthief Nawz! Is that better?
I agree with you, considering future mod, bigger, better, faster, more money!So the TFS 170's bested the GT40X's by 18hp/11tq on an engine dyno, through a big breathing carb/intake and an open exhaust.
Now, switch that intake out for a more restrictive Cobra EFI upper and lower and add a full exhaust to the mix (not simply open header like the comparison above) then convert those numbers to SAE net and those differences are cut by about half.
Like I said, the TFS heads are better, but not by a huge margin.
Not sure if it would be a big enough margin for me to justify the cost of new valve train components to go along with it? But that's just me.
At entry level like this, one is really as good as the other. Some perform a little better than others, but their cost reflects that. Some are built to a higher standard than others and their cost reflects that too. Pick the one with the cost vs quality vs performance balance you can live with and buy it. If going from a straight performance stipulation, the AFR's and Trick Flow heads only really start proving their worth at a street car level in the 190-225cc ranges IMO.Resale value too. Some people like to stick to Ford parts too so there's that. TFS is very popular with 5.0's and AFR too. It's up to you.
@karthief Nawz! Is that better?
So the TFS 170's bested the GT40X's by 18hp/11tq on an engine dyno, through a big breathing carb/intake and an open exhaust.
Now, switch that intake out for a more restrictive Cobra EFI upper and lower and add a full exhaust to the mix (not simply open header like the comparison above) then convert those numbers to SAE net and those differences are cut by about half.
Like I said, the TFS heads are better, but not by a huge margin.
Not sure if it would be a big enough margin for me to justify the cost of new valve train components to go along with it? But that's just me.
I agree, just consider the cost of extras, are they not all pretty much bolt ons with the exception of rocker arms? None requires dedicated headers? Just wunder'n.I was just providing a somewhat baseline for comparison. Never said either was better. Personally any of those heads will get the job done. Just shop around
I agree, just consider the cost of extras, are they not all pretty much bolt ons with the exception of rocker arms? None requires dedicated headers? Just wunder'n.
What is meant by 'sloppy 300hp car'?Honestly if the op really wants to stick to his around $1000 budget, he already has pedestal mount rocker, I would stick with the ps and any money saved I would throw at the suspension, better yet throw the money right at it. I would rather drive a solid 215 hp car that puts the power to the ground than a sloppy 300 hp car.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?