[drazga97]

now i know my internals will only hold to about 450rwhp but ive decided i want a kenne bell then eventually put in a t56. what if i were to get forged internals for my stock block and then put a kenne bell on it? what would the block be safe up to? i want about 500 at the wheels for everyday and maybe some more on race gas with a different tune and more boost. would it hold or should i start saving for a new block too?

[yojoe600]

i think our blocks are good to 500... so you may want to get a cobra block first

[DiZzyBonne]

If I'm not mistaken, our block itself is good for like 1,000 RWHP. It's made of iron, correct? You're better off purchasing a pre-built shortblock, such as this one.

[Drgnracin72]

Originally Posted by yojoe600 i think our blocks are good to 500... so you may want to get a cobra block first

dude, stop posting in here bc your way off and dont know. the block itself will handle over 1000 hp, its the internals that are weak

[AndrewA.]

Some really good info can be found in How to Build Max Performance 4.6L Ford Engines by Sean Hyland. I think it was like 20bucks at barnes and nobles. Great book that breaks down pretty much everything and tells you how much the stock block SOHC and DOHC can take and what is best to use. For 500rwhp you may not be needing to completely rip up your motor.

[jivepepper]

I wouldn't feel good running a stock short block over 500, and if you replace at least the rods and pistons you'll have to remove the motor.

[drazga97]

+1 to dizzybonne and drgnracin72.

thanks for the link i was looking for someone to point me in the right direction. i also expected the block to handle way more than 500hp. i can just swap my heads right onto that right? and drive that till i can afford to put a kenne bell on it?

[Exodus]

Tork Tech claims safe stock short block internals are good to 400. So in theory if you put heads cams, and exhaust you'll be in the 325-350ish hp. That would put a Kenn Bell even with low boost way over that 400 mark. Theres someone on here with that problem now, maybe he will chime in. I would either slap a blower on the stock motor OR biuld the whole motor, not just the heads then you can put what boost you would like to it and probably be just fine. I have seen advertisements with 2v s boasting over 900. And have heard rumors of over a 1000hp, so I know the block is strong, its the rotating mass that wont keep together. Theres someone on here with that problem now, maybe he will chime in.

[usafimj]

- 298 stroker New - Livernois Motorsports - 4.6L 2-Valve 298ci Stroker Rotating Assembly
- Heads of your choice New - Livernois Motorsports - Browsing Store
- Cam of your choice and you should be set for your KB

[06RedfireGT]

^yup

Stay away from MMR. They have turned to shit. Livernois makes good shit.

[drazga97]

usafimj. your saying keep my block, throw the stroker rotating assembly on there go with either the stage 2 or 3 heads from livernois then throw say a comp stage 2 cam in there and finish it off with the kenne bell and i should be fine? i really dont want to buy a block if i dont need to for my goals (500-600hp tops). thanks guys.

[2nsane]

i got a KB 1.7L@10psi on a stock motor pushing 450rwhp on a race tune. this winter i will put my 2.1 KB with forged internals, cams, ect and my goal is 600's on a the same block i have now.

[DiZzyBonne]

The thing is, unless you can install the rotating assembly yourself or know someone that can do it for dirt cheap, it might just cost you as much to buy the pre-built shortblock and install it yourself or have someone do it for you. Besides, with the pre-built shortblock you have less headaches of getting the rotating assembly installed correctly.

Also, Livernois Motorsports is pricey, and you're mainly paying for a name. Not saying they're bad, just pricey.

Originally Posted by 06RedfireGT ^yup Stay away from MMR. They have turned to shit. Livernois makes good shit.

Explain.

[RyanGT]

Yeah forge the internals. Do you really need 500hp? its only 50 hp more than not forging the block per say. If you go forged get the 2.6kb and do it right. Even if you dont go past 14-16 psi it will be much more efficent and not cause as much heat or stress. Not to mention the bypass issue. Im still trying to get tuned past that problem. Its been a year.

Also get heads done while everything is apart. I regret not doing it when i had it torn down. And dont want to pay for the labor again.

[ronster]

The test that was done on the Tork Tech supercharger on a Mustang dyno, took a couple of rods out at 437 rwhp. One of them came through the side of the block. The block was replaced as well as the rods and pistons of course, with Eagle H beams and Mahle forged slugs. Replaced with another stock block, it is now at 445 rwhp at about 10 pounds. No issues so far. A 99 Saleen in Jersey using a stock block with good internals and the Tork Tech kit is at 500 rwhp at 12 pounds. No issues there either.

The reason TTI quotes 400 rwhp is that they know this is absolutely SAFE and it will last a long time.

[ronster]

Power update...the guy a Jersey sent me a new dyno sheet. He kicked the Tork Tech up to 14 pounds. 520 rwhp and 549.50 rwt. Still a stock block with good internals. Must be Ford tough.

[jivepepper]

Originally Posted by ronster Power update...the guy a Jersey sent me a new dyno sheet. He kicked the Tork Tech up to 14 pounds. 520 rwhp and 549.50 rwt. Still a stock block with good internals. Must be Ford tough.

Good power. I made 516 with 12 psi and stock heads, intake and a small cam. Every one uses stock blocks. That's all there is to use. Right now I'm at 598 with 16.5 psi. We had to pull the timing out because I was low on fuel are it would have made over 600. The stock iron blocks are good for well over a 1000rwhp a couple at MMR have broke 2000.

Now go to the track and back up the dyno numbers. I know if it's set up correctly the Mustang dyno can show less hp. But it is also is the easiest to screw with to show inflated numbers.

I know cobras can't get 500+ out of 14psi when using an eaton, and that's on a dynojet, So it makes me skeptical of your numbers. Do have ported heads and cams?

[ronster]

The heads are ported and the cams are a Stage I Fox Lake cam from what I understand. Kenne Bell says on his web site that each pound of boost you ad, is a 10-13 HP gain, so he figures to go up to 18 pounds and maybe get to 560 max. and call it good.
I was also a little skeptical when I saw the sheet, but the shop he is using back east has a really good rep. and tuner, so I took the numbers he sent me.

[jivepepper]

A Kenne Bell is more efficent than an eaton