Some engine part questions

JMGlasgow

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Feb 19, 2017
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#1
I recently acquired a set of Trick Flow TW heads and other parts from a friend who had them on his '82 Capri back in the late 90's. They have aluminum stud mount roller rocker arms that I can't seem to identify. They are black, and the only marking on them is F16. I also think the heads are 170cc, is that the intake size? They have had a minor port job done on the intake. The heads also have pushrod guide plates.

Other parts I got are a set of JBA shorty chrome headers, Ford Motorsport valve covers, and ARP bolts.

A few questions:
1. What brand are the rockers?
2. Are JBA headers any good?
3. Can I use the valve covers? And if so, will I need an intake spacer and will it fit under a stock hood? (Explorer GT40 intake with internal EGR)
4. Can I reuse the head bolts?
5. Should I use Trick Flow pistons?
6. What cc are the combustion chambers?

Here are some pictures I took of the parts and any numbers I found.
IMAG0593.jpg
IMAG0594.jpg
IMAG0595.jpg
IMAG0596.jpg
IMAG0599.jpg


If you want or need any more pictures I can get them, just let me know what you want to see.

I'm planning a new engine build with these parts for my 1993 GT. It will be a street car so driveability is important. I'm hoping for a little over 300hp at the wheels. I also plan on using a stock block and no power adder.
 
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Dan02gt

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Mar 2, 2003
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#3
JBA makes some of the best headers you can get. Definitely use them. You could make the valve covers work, but I wouldn't. They are carb covers and are never going to be "right" on a EFI motor. You can also reuse the head bolts.

No clue on the rockers or combustion chamber size. I guess you could cc them if you have the stuff.

I'm thinking you'll be close to your 300hp goal with that setup.
 
May 15, 2018
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#4
JBA makes some of the best headers you can get. Definitely use them. You could make the valve covers work, but I wouldn't. They are carb covers and are never going to be "right" on a EFI motor. You can also reuse the head bolts.

No clue on the rockers or combustion chamber size. I guess you could cc them if you have the stuff.

I'm thinking you'll be close to your 300hp goal with that setup.
I agree with this besides using the head bolts, if they’re torque to yield bolts that is. I wouldn’t reuse them. It only takes one time for a head bolt to snap or go soft while you’re torquing it to screw up your day. Ask me how I know lol.

If they’re arp bolts or studs then I’d say go for it.
 

Steel1

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Aug 18, 2017
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#5
I agree with this besides using the head bolts, if they’re torque to yield bolts that is. I wouldn’t reuse them. It only takes one time for a head bolt to snap or go soft while you’re torquing it to screw up your day. Ask me how I know lol.

If they’re arp bolts or studs then I’d say go for it.
Agreed, Head bolts I would not reuse, studs yes.
 

JMGlasgow

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Feb 19, 2017
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#7
So valve covers are not going to work, no big deal. Will I be able to use the stock covers then?
 

CarMichael Angelo

I don't like your attitude, let me fix that.
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Nov 29, 1999
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#9
I don't think 5.0's have tty head bolts.
4.6's use them.

While replacing any bolt that has been torqued to a point of stretching is a good practice, Reusing head bolts has been done without incident since the dawn of the internal combustion engine. Unless the bolt is listed as a tty type..it can, and has been reused.
 

JMGlasgow

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Feb 19, 2017
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#10
Is there any difference with these heads from the 90's and today's TW fast as cast heads? Does anyone have any idea who made the rocker arms?
 

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