[BatMobile]

Looks like I will be doing a D392 crate motor from Ford. Rated at a solid 430 HP.

I'll run that in the car as it is for a little while, until I get all the car sorted in the handling department. But I am curious as to what can be done to the block at a later date, in terms of heads and cams and what sort of power can be made from that engine and still be driveable and reliable?

Thanks!

Neill

[ April 23, 2002, 12:07 PM: Message edited by: BatMobile ]

 

[Tom Mauldin]

A set of AFR185 heads work wonders on that motor taking it over 500hp. You can also go up one step on the cam in the same Comp Cams Line and it gave it a little more. I would leave the same cam and replace the heads. Tom

 

[JAM1775]

The motor should make 450H despite advertised 430. The GT40X heads are probably the weakest part of that set up. If you do not someday
replace them a port job will increase power over 500. The AFR's advertise a 75HP increase over the GT40's.

 

[d boothe]

Tom, if I'm not mistaken, the comp cam XE282HR is the largest hydraulic roller they make...the same one that comes in the 392 crate motor. If I'm wrong please let me know as I'm about to build a stroker 408 or 427. dino

 

[grumpy]

Bat,
If you got the 4-bolt 351 FRPP block you can stroke her out to 454 cubic inches. If it's a two bolt then you can still go to about 430 cubic inches max. You also got those nice FRPP stepped 1/2" bolts for the heads a world apart from the 302 7/16" replaced head bolts. Did you get it set up for the serpentine belt system, check to see if your damper is a billet PN M-6316 or C351, This puppy makes heat in the way of steam, you'll probably need a different radiator, a stock stang would never work and don't think you'll be happy with the FFR supplied either. You're going to have to go with the solid type motor mounts from HP Motorsports to gain you the 1" drop for hood clearance. Tell Paul Brown over there Grumpy sent you. Like the guys above said the GT40/EXP heads are the weak link, but oooooohhhhh the many possibilities you just purchased.

Grumpy
PS: Deane, from what I understand the D motors are set up for roller/rocker cams but not the 2-bolt 351 blocks, they will not accept the roller/rocker cams only flat tappet making you go to a less agressive profile caused by the flat tappet ramp rate.

[ April 23, 2002, 03:09 PM: Message edited by: grumpy ]

 

[BatMobile]

The D392 is the serpentine...the A392 is the V-belt...

Sounds like the AFR heads are the way to go...

hrmmmm

Neill

 

[Tom Mauldin]

Deane,
Muscle Mustangs did a dyno test on a comp cams cam around 590 lift but I can't seem to find that issue. I think it was the same as when they swapped the AFR heads on and got over 500hp. I personally like the cam that it has in it already. If anything I might put a set of 1.7 rocker arms on it.
Grumpy,
The two bolt blocks like the A351 and the '94 and later 351 production blocks were set up for the hyd. roller. I have had 3 and all of them had the tall lifter bores and the attachment points for the spider to hold down the dog bones. Tom

 

[d boothe]

Tom..MM&FF just did a test on a bunch of Comp cams in the 392...but they were all solid rollers. In the article they stste that the XE282HR is the biggest hyraulic roller in their lineup..but hey, I could be wrong or they could have a misprint. On my desktop dyno, the Comp cam XE282HR just about blows everything else away...but then again, thats on the desktop dyno, and how accurate is that in reality?? Since I don't want to go with a solid roller...I would be very interested if they do make a bigger hydraulic roller...so please keep me informed. Thanks!!dino

 

[Trumbo]

Has anyone tried a different intake manifold on the FMS 392(like an Eldebrock air gap dual plane) instead of the Victor Jr. and with what results?

 

[Mike Braddock]

Dave,

A dual plane (even a big dual plane, like the Edelbrock RPM or Air Gap) will give you back ten to twenty ft-lbs of torque down low and trade off about as much hp at higher rpms. With your displacement the torque should pretty much take care of itself, especially if you do a head upgrade

. I think the extra torque will just result in traction problems. If we're talking about a 3400 # mustang in a car that rarely sees 5500+ rpm, then a dual plane would be better, at least in my opinion. If you Vic Jr. will fit under your hood, I'd stick with it and save your pennies...

And Dino, like you need a bigger bumpstick than the XE282HR . Then you'd be telling me how you 'need' that stroker crank to make better use of your cam and heads. Heheh...

Mike

 

[d boothe]

Hey Grasswacker...the checks in the mail......for the 351W roller block....already talked to the machine shop...$1600 for a 408 kit...forged everything with H beam rods!!! dino

 

[Trumbo]

Thanks for the info and opinion, Mike! I'll stick with the Victor Jr.