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Something happened to my picture hosting, I'll have to fix it.

I used the Mahle 11.2 piston, I wanted a 4032 piston and didn't want to go with a custom piece.

That's exactly what I've done, once work slows down a little I finish the write-up. I hope that I'll have it running this Saturday, but we'll see if the fuel pump arrives in time.

I'm going to update tomorrow or the next day, but the short story is that I've been waiting for a crank scraper for two months--I'm starting to become a little frustrated.

The boss engine uses a forged piston. Sent from my VS995 using the svtperformance.com mobile app

This is what I just did, but a built motor is still costly. By the time you put OPG, crank sprocket, block, pistons, rods and all the other stuff in you're still out an easy $4500 bucks. I went the extreme and added ported heads, crank scrapers, windage control and cams. I'm scared to know what...

Skip the Cobra Jet oil pump and go with the billet OPGs, then take that extra money saved and put a windage tray and screen in the car--see the link. I haven't heard of anyone using the CJ OP pump, but there are oiling issues with the coyote, especially when the boss and CJ manifolds are used at...

They come ready to build with one exception, it needed deburring. But everthing else was machined and ready for parts. I choose to opened up the piston skirt to wall clearance .001 bigger then factory because I run nitrous. Sent from my VS995 using the svtperformance.com mobile app

Header picks up the midrange a lot on these cars. Plus the American sound that comes out of the tailpipes is amazing!!!

A little update, I ordered custom crank scraper and windage tray. Another picture assembling the heads and a picture with the cyl. heads installed. I might go to a stand alone PCM next year to turn more RPMS. Hence the need for better oil control. The coyotes tend to starve oil from the rods...

Don't, E85 collects water

Solid numbers!! Now you need some ported heads!!

Thanks, Sniper Here are a couple pics of the chambers and of some misc parts that go back on the cyl. heads. I'm going to have to open up the ports on the CJ to match the ports on the cyl. heads.

Which is is the GT and which is the Gt350

Update, my ported cyl. heads showed up today. I can't wait to get them on. Unfortunately, my engines compression will be lower than anticipated and calculated to 10.76 to 1.

I'm curious the whipples dyno at too.

I can't give you a canned answer because the spring's effective rate will decrease with more boost. If I were you, I would look at spring rates when you buy and talk to a respected engine builder. Boss Spring apply 300 N closed and 700 N opened GT springs apply 265 N closed and 650 N opened

To hold more power, the old motor is still fine.

The Boss mustang valve springs are super cheap,.

Here is the sheet I use.

How much did the machinist remove from the deck of the block?

I love my CJ intake. I'm about to have a new motor with the baby CJ exh. cams and the new L&M intake cams.

Send me your info and I'll plug it in my homemade calculator or I can email you my calulator.

I measured it on my motor from the top of the deck, and it checks out with my math. I can calculate block deck surface to top piston if you give me the compression height of your pistons. I'll need to know if you have had the surface of your block decked and if you're running a standard crank...

I'm sure not too sure I'd want to extend my runners. It looks like a nice piece, but I'd rather have it plumbed directly to the manifold.