TRW 12:1 390 +.030 piston 2292F

[1968galaxie]

Anyone have an old TRW catalog?
Looking for the weight (with pin) of the TRW pop up pistons for the 390.
2292F 0.030"

I believe the TRW 2291F 0.030" was 802 gm with pin.

Hopefully someone has an old catalog - or a piston to weigh.

Looking at putting an FE back in the Galaxie.

Cheers!!

[Falcon67]

I have a 1979 catalog at the house, both the regular and the performance info  If nobody else posts, I'll try to remember to do a lookup when I get home later this evening. 

[Tommy-T]

According to my 1983 TRW catalog the L2292+.030 piston weighs 645 grams and the pin weighs 150 grams.

When I was in my late teens I bought a set of standard bore L2292's that were knurled. Got 'em for next to nothing or cheaper. Pulled the heads 'n pan off of my '67 Mustang and put 'em in. No balancing, just pulled the snap rings and swapped 'em on the rods. Bought a pair of C3AE-D Low Riser heads and F427 intake from the Recycler throw-away paper and put an Owen-Orbit regrind solid cam in it.
Man, that thing would run hard. Ran 13 flat at Terminal Island on Caldwell recap soft rubber tires.
Fun old days!

[1968galaxie]

Thank you guys!

I knew someone would know.
Bought these pistons in the early 80's.
Also bought from Ford parts counter a set of lemans rods (should have kept those)

Cheers

Perry

[Rory428]

I also have a 1983 TRW Performance Components catalog, I have the same numbers as Tommy, 645 grams for the bare piston (+or- 4 grams), 150 grams for the pin, (+or-3 grams). Interesting, that to keep the piston at 12.0-1 compression, regardless of bore size, w 69.6 cc combustion chambers, they reduced the dome volume, the STD piston has a .225" tall dome, the .030 piston has a .215" dome, and the 060 piston has a 195" dome. Also interesting, is the weights of the 3 pistons, the STD piston is 640 grams, the .030 is 645 grams, but the .060 piston is only 625 grams.

[1968galaxie]

Slowly putting together a 390 + 0.030" 3.78" stroke street/strip build.
The 502 BBF (385 series) is honestly too crazy for street driving - even with large drag radials and only 3.91 locker rear.

Probably go with a flat tappet solid lifter grind. The old Crane 290 (256@0.050") 0.601" cam worked very well in my brothers 390.
I suspect a little extra exhaust duration split would pick up some power too.
Cylinder heads C1AE-A with 2.09/1.65 valves. Likely will go to a 2.15" intake - 1.65" exhaust is plenty for the 4.08" bore.
Will develop the heads using Allan Kulwicki's Superflow 600 bench.
Intake? Not sure. Have an F427 and a Blue Thunder dual plane. Perhaps look for a port-o-sonic (and do some porting)? Not sure just yet. The Victor I think is too big for a 6500 rpm 390. The TFS single plane intake? Not sure if that one is any better at low end than the Victor.

[frnkeore]

I consulted with Blair, last year on intakes. At that time, he told me that the TFS & Victor were equal, even though he used the TFS on his EMC engine. He said that he would also recommend the Holley Dominator, after that and I would infer that the Street Master would be next inline.

In Jays intake book, on a 600 hp, 427 (TR), there was only 25 hp difference from the Victor, to the port matched,  Dominator and on a 425 hp, 428, the Dominator GAINED 5 hp over the Victor.

[1968galaxie]

I will have to start looking around for a Holley Street Dominator or Offy Port-O-Sonic or just use the Blue Thunder intake.
Probably sell the 428CJ manifold I have on the shelf.

[frnkeore]

That was from memory, I went back and looked at the book again and the Dom was only 18.4 hp down But, it had a higher hp average hp, 3k - 7k. Dom, 481.2 Tq x 566.3 hp vs Vic, 471.8 Tq x 451.4 hp. Max torque was the for both @ 517.

Same with the 428, 2.5k - 5.3k, Dom average Tq was 441.4, hp 330.5. Vic, Tq 430.8 x hp 323. Max torque was up 13 on the Dom and hp, up 5. But, the Street Master edges out the Dom, on average HP/Tq on the 428 so, it might be a better choice on a 390.