Hello all,
Yes, I am retarded.

rebuilding the 400 a second time. First was only practice. This time Using DSS pistons. ( anyone want my Tmyers PM me)

anway,
Ford ;
comp cam 282S (236 @.050) it is smoot like stock, runs out ~5000 .
Trick flow 195
dual plane Weinand
195 cranking comp

In my 406 sbc;
294S (250 @ .050) and it is radical and spins to 6800 faster than i can shift.
airgap
AFR 195
210 cranking comp

I don't want to make the ford undrivable jumping 15 degrees but i would swear the 282 behaves more like stock. Is anyone running a longer duration? This is my only ford, both ~400 CU, does the fords firing order just behave different?

Chris

 

I have a Comp Cam 282 in my 302 Ford. I have been very happy with it. I would not change a thing.

 

Chris989,

Hopefully the new combo is what you're after. I don't know that it's ever going to rev as fast as the 400 Chevy because of the 1/4" longer stroke. Pretty sure you're looking at a solid 450+HP build there, but probably not much above 5,000 either.

 

I've used the TFS 195 runner on a 408 Cleveland with a hydraulic roller cam that has 218 @ .050 and it made 525 horsepower at about 6000rpm using a Performer RPM Air Gap intake and a 650 Holley. This was for a Pantera applications and running through Pantera exhausts. I can never remember but I think that for a given amount of CC's the intake port mean cross section is smaller on a Ford head vs one for a small block Chevrolet.

A solid lifter cam will behave somewhat smaller than a hydraulic cam will with the same amount of duration but both of your cams are much larger than what I used.

 

Nice work DaveMcClain! That's a lot of power with such a small cam. Do you recall any other specs?

 

I had to wait till I got to the shop this morning to get some more information on that build of which I've done several that were very similar for Pantera applications where maximum mid range torque was the main goal. Heads were the 195 AFR with no port work and the intake was an RPM Air gap. I can't remember if I welded up the divider or not but I have done that on some of those builds. Cam is a single pattern hydraulic roller 218@ .050 .325 lobe lift giving .562 lift with a 1.73 rocker. 107 lobe sep in on 105.

My HP quote was wrong. I just looked at my dyno figures and the engine made 485HP at 5900RPM and 485lbs/ft on the torque at 4000rpm. This was with the 650 and a 1/2 inch 4 hole spacer also running through the Pantera exhaust system which is a shorty style header, and a bent 2.5 inch pipe and a muffler. I didn't get to run the engine with a normal style 4 into 1 header with a normal collector but looking at the data from an iidentical build it sacrifices about 40 horsepower and about 50lbs/ft torque with the Pantera exhaust system but it is much quieter. I wasn't all the concerned about the numbers I was just getting a baseline for the EFI system that they ended up using which made power pretty close to the carburetor.

Timing was best at 28 degrees total.

The thing about discussing camshaft requirements between two engines that are the same size but one has a cylinder head that flows more air is that you tend to find that the engine with the better cylinder head requires less duration to make the power.

 

Dave,
Thanks for replying, I was thinking the other day, I am wondering if my valve train is the issue.. I have the correct springs but i had to add longer studs for proper sweep and thread engagement. They are 7/16 with TF aluminum rockers. Maybe they are getting out of shape?

Can not add a girder because my valve cover is already super close to the AC suitcase.

Chris, also, I love the sound of my 406 so i can't help myself

 

What sort of rocker arm sweep were you going for that it needed longer studs?

Here's what the Pantera engine sounded like through the Pantera exhaust system. These mufflers and pipes had been on the engine when it broke a skirt off of a TRW forged piston and cracked a cylinder which filled up the pipes with coolant. It took forever to get that all burned out of the left side pipe but it finally did after about a dozen pulls.

 

It seems to me you have an awful lot of compression and cam. I'd say it's probably undriveable now. No way it runs smooth with those numbers.Timing could be an issue.