Are GT40 heads good?

Continued Popularity of GT40 Heads When GT40s were easy to find in junkyards, they were a great inexpensive upgrade. And to this day, if you can get a set of GT40s inexpensively, they are absolutely better than your stock heads.

How much HP does GT40 heads add?

While we’ve seen engine dyno tests performed with GT-40P heads replacing factory E7TE castings and resulting in a boost of more than 25 hp, we have reluctantly set our horsepower gain goal at 25 ponies, as well.

How much are GT40 heads worth?

You can pickup a used set of gt40 iron heads on ebay for $300-$350, you can also pickup a set of new alum. gt40s for about $700-$800.

How much horsepower can you get out of GT40 heads?

RE: WHATS THE HP GAIN STOCK TO GT40 HEADS Those heads can give you a decent 50 HP with a mild cam.

Can you put GT40 heads on 351W?

I had those heads on my car with standard length roller cam pushrods and I never had a problem… And they will work on the 351W also.. Just make sure you use ’78 and newer 351W pushrods to use with the GT-40 heads…

Can you put 351c heads on a 302?

You can not fit 351c heads on the 302, entirely different block. Before the wide selection of aftermarket heads was available like they are today, people use to machine 351w heads for application to 302s.

How can I get more horsepower out of my 302?

How to Get the Most Horsepower Out of a Ford 302

  1. Install a performance aftermarket cold air intake to replace the Ford 302 factory air intake.
  2. Install a performance aftermarket exhaust system to replace the Ford 302 factory exhaust system.
  3. Install a forced induction — supercharger or turbocharger — kit.

What heads are better GT40 or GT40P?

GT40 vs GT40P, which are better? Really, when you get down to it, neither head is any measurable difference better than the other. The GT40P does have a slight edge over the GT40 cylinder head because of its smaller chamber volume. The smaller combustion chamber can net a bit more compression, but only marginally.

Can I put 302 heads on a 351W?

For the most part 302 heads and 351W heads are the same. Different years can have different combustion chamber sizes but ffor the most part there will be no performance increases by going with 302 heads. Plus you will need to drill all the head bolt holes out as the 351W uses larger head bolts.

What kind of head does a GT40 have?

What Are GT40 Heads? The Ford GT40 heads are a factory small block ford head found on certain vehicles, most notably, the Ford Mustang. They were most famous for their debut on the 1993 Cobra and were also found on the 1993-95 Ford SVT Lightning truck.

When did the GT40P come out on the Mustang?

They were most famous for their debut on the 1993 Cobra. GT40/GT40P heads were a more free flowing cylinder head that outperformed the factory E7 heads that were found on most 5.0 Fox Body Mustangs.

Are there GT 40 intake heads for Fox Mustangs?

Following up on the GT-40 intake article, this is all about the infamous GT-40 cylinder heads. Yes, some fox body owners out there are still “striking gold” in salvage yards when they find the good ol’ GT-40 heads, and they are still good value-for-money and will help you build a cheap 300HP 5.0L but do you know the history of these things?

What kind of airflow does a GT40 have?

The original GT40 race heads also flowed 195cfm on the intake side and 152cfm on the exhaust side at.500 inch lift. Ford hired Roush Industries to help out and rework the then-current 5.0 HO head casting to meet their airflow targets. It was a success because the modified HO head castings actually flowed better than the ’68 GT40 race heads!