Forging a 2V

[Dr.Jay]

Hey guys, I'm planning on forging my 99 2v. It currently has a V1 S-trim with supporting mods. It's pushes around 405-420rwhp. Engine block wise I believe it is stock, as well as stock heads and stock cam. My question is, what would be an optimal compression to run if I plan pushing #15-16 out of my blower (not now though, it'll have to stay at 10psi for a while)? Here are my 3 options, what do u recommended?


#1 KB FORGED Dished Pistons FLAT TOP 3.572" bore
this auction is for .020" over ONLY
please email for other sizes What other sizes would be good for a stock block?
also available in .020" over with 10cc dish and 17cc dish
2618 Forged Aluminum. Fully CNC Machined
Tool Steel Pins
double spiro locks for full floating
Flat top design
3.572" -.020" over bore
good for 750+horsepower
12.1:1 compression with 46cc heads
13:1 with 42cc
11.1:1 with 52cc
10.7:1 with 54cc

#2 KB FORGED Dished Pistons 10cc 3.572" bore
this auction is for .020" over
please email for other sizes
also available in .020" over with 17cc dish and flat top
2618 Forged Aluminum. Fully CNC Machined
Tool Steel Pins
double spiro locks for full floating
10cc spherical dish
3.572" -.020" over bore
good for 750+horsepower
10.3:1 compression with 46cc heads
11.0:1 with 42cc
9.5:1 with 52cc
9.3:1 with 56cc


#3 KB FORGED Dished Pistons 17cc 3.572" bore
this auction is for .020" over ONLY
please email for other sizes
also available in .020" over with 10cc dish and flat top
2618 Forged Aluminum. Fully CNC Machined
Tool Steel Pins
double spiro locks for full floating
17cc spherical dish
3.572" -.020" over bore
good for 750+horsepower
9.4:1 compression with 46cc heads
10.0:1 with 42cc
8.7:1 with 52cc
8.5:1 with 54cc


What combo would be good? Would it be good if I got .020 over? What's 42cc, 52cc,54cc etc heads mean? I really wanna do things right on the first try.... thanks in advance!

 

[99MustangGTman]

#3 would be your winner, i dont know how you expect your car to last with the compression ratios of the other ones

 

[76mmsaleen]

if you have the funds i would do the 4v conv.....or just buy a 03-04 cobra block, of the whole motor...might be a tade cheaper. just my 2cents

 

[Dr.Jay]

What does this mean? also available in .020" over with 10cc dish and flat top
What would be better for my application?

What cc's are my heads (they are stock)

:beer:

 

[y2k2gt]

These are the stock specs. You need 17-19cc pistons. I use Diamond 19cc .020 pistons.

Cylinder heads: cast No. RFXL3-CZOD
Combustion chambers: 42.40cc
Valves: 1.752/1.417 inches
Rockers: roller type, w/1.80:1 ratio
Camshaft lift: .505/.534-inch lift Duration (I/E) @ .050" 186/194
Compression ratio: 9.30:1
Pistons: hypereutectic w/.188-inch dish

 

[01yellercobra]

What does this mean? also available in .020" over with 10cc dish and flat top

The .020" means that you can get the pistons .020" bigger then stock. Which is the normal overbore for the 4.6. I think it's a good idea to go with the bigger piston so that you can have the block bored to make sure the cylinders are truly cylindrical.

 

[Dr.Jay]

Come think of it, I think none of these suit my needs... 17cc apparently gives me more compression than I'm comfortable with, and that .020 overbore means I'd have to take the block to a shop... more excuses for the shop to rip me off :bash::cryying:

 

[LS1PUSSOUT]

if you have the funds i would do the 4v conv.....or just buy a 03-04 cobra block, of the whole motor...might be a tade cheaper. just my 2cents

Hes going with a kenne bell. The 2v heads work extremely well with positive displacement blowers. The 4v conversion isnt needed....

 

[Dr.Jay]

Any modifications if I were to use a 99 SC Vortech system on a 2002 GT engine?

:banana::dancenana:

 

[99MustangGTman]

u need a different bracket