365/AFR 205/Fast 90/Tick Cam/478rwhp 470rwtq/Mustang Dyno
 

Well, this was a shocker for sure! After having a good customer of mine sell his motor, I thought I'd never get to see how the combination performed. I was in for a surprise today when he told me what it made for the person that bought the short block from him(cam was still in the short block).

I specified "Lawhead" on here a very nice race motor that consisted of a forged 365 cubic inch 6.0 iron block with hand ported 243 heads, 58cc chambers, Edelbrock Super Victor intake and a nice carb to go with it. The cam was designed around a single plane and the heads that Lawhead had on it.

The guy who purchased the motor ended up putting AFR 205cc cylinder heads on it with 58cc chambers and a Fast 90/90 with my camshaft I specified.

Here is a short run down of the set-up

-6.0 Iron block 365 cubic inches
-Forged pistons 4.005" bore
-Forged rods 6.125" length
-Stock crank
-AFR 205cc cylinder heads w/ 58cc chambers for 12.1:1 SCR and 8.98:1 DCR
-Fast 90mm intake manifold w/ 90mm throttle body
-Custom Tick Performance 242/250 .615"/.615" 108+2 camshaft
-Kooks 1x7/8" headers
-3" ORY
-3" Magnaflow cat-back exhaust
-T56 transmission

Here is the shot of the dyno graph I was sent. I'll have a full picture showing the power curve here later on today. This was on a Mustang Dyno.

http://i1105.photobucket.com/albums/...psc8d8c0e0.jpg

The reason the cam peaks at 4600 for torque and 5900 for horsepower is because of the 205cc intake runner. IMO it's a tad bit too small for a 370, but it makes a lot of torque that's for sure! I'd be willing to bet that when we see the entire power curve that it hangs onto that power for a while past 5900rpm!

Very interesting! Great numbers, and great torque especially

I was blown away by the torque figures, but looking at how small the runner is, how much compression it has, how much overlap the cam has, and mainly the EVO of the cam and how long the power stroke is...it's really a no brainer to me that it made so much torque.

Not really surprised, I have AFR 205s on a ERL 427.

Are the numbers in your signature for that combination?

BTW guys I was wrong about the size of this engine. It has only had a .005" hone and is actually a 4.005" bore motor. It's 365 cubic inches, not 370 c.i.

My mistake!

torque rules...

You're one to know!

Yes that's the numbers for that combo. The heads were built for my LS1 bottom that I had to replace. The only thing I did to reuse them with the ERL was to get a new cam from Ed Curtis. It peaks around 6100.

I have posted the full dyno graph guys.

I think it is safe to say that the dyno operator cut this set-up a little short on his pulls! I didn't realize that they didn't pull it past 5900rpm. I was assuming that it peaked at 5900rpm.

I would be willing to guarantee that if the tuner had pulled it to 7000-7200rpm like the set-up was designed for(we were actually planning for 7400-7600 with a single plane) this engine would of made 490-500rwhp.

On a Mustang Dyno that is stout!

Thats impressive on those cubes. Healthy motor!

Daym Ive seen nothing but good numbers from your cams. Im glad my buddy told me to go with your specs.

Thanks guys!

Nice numbers! Do you know a roundabout of what compression his motor is?

Thats a great setup. The combo of that small runner/compression/tight lobe centers sure make for a torquey motor.

Shhhhhhh........ :angel:

Well I popped in here to post my results but it looks like you eat me to the punch lol.


http://i1269.photobucket.com/albums/...psc4bf27e4.mp4

And to clarify they are 1 3/4" headers

Great numbers! If I need a cam spec'd they'll definitely be the ones doing it!

Awesome numbers. Hope mine puts down numbers like that.

12:1 static and 8.98:1 dynamic. The large cam allows the compression to be utilized as in the end all we're trying to do is fill the cylinder with as much pressure as the given octane will allow.
It's explosive. That much torque at that low of an rpm is ridiculous. I'd really like to see what it would do with even more intake lobe, but there's always another one that will come along.

I know Tony doesn't like tight intake and especially exhaust centerlines with his heads and how large the exhaust valves and ports are, but I've used tight I&E centerlines with 2-3 different AFR headed combinations now and made huge torque across the board in all of them. This one included. All of them had 1x3/4" headers too.

When that exhaust port and valve is that large, you don't need as large of a header primary to scavenge and evacuate the cylinder. I would like to see what a set of stepped headers would do on this set-up.
When I told you I was going to brag, I wasn't lying!
Even more incredible! If you put true duals on your car and a set of stepped 1x3/4" x 1x7/8" headers it'd be well over 500rwhp and possibly 480rwtq. For a 365 stock stroke 4.0" bore motor, that is incredible.
Awesome!
What is your set-up? Did I spec a cam for you?