Reply to "UK GT5 Full engine rebuild - 351 Cleveland aiming for 400bhp"

> He has very kindly sourced me a thick walled Australian block.
> He is going to supply a replacement cylinder block, fit the existing four
> bolt caps, line bore, bore and hone cylinders to plus .020 " with torque
> plates fitted and machine the deck surfaces.

If the Australian block has 2 bolt mains, it is not a thick wall block.
Only the XE race blocks had thicker walls. I've owned both and the 2 bolt
main Australian blocks have walls that are no thicker than U.S. 2 bolt main
blocks. That's not a problem as long as the core shift is minimal. Have
the block sonic tested if you can.

> We are going to convert the cylinder heads to unleaded spec. with hardened
> exhaust sets, bronze guides, repair damaged exhaust mountings, rebuild with
> new Ferrea stainless valves, new Comp Cam springs, retainers and locks.
> Convert cylinder heads to "Boss" spec adjustable valve train with screw in
> 7/16 rocker studs, pushrod guide plates and full roller aluminum rockers
> plus the extra machining to cylinder heads.

Before you do all that, get a quote for the total cost. Labor rates vary
widely but with the exchange rate the way it is, you may find purchasing a
set of TFS PowerPort 190 aluminum cylinder heads to be no more expensive.
Mike Drew can keep the shipping cost to a minimum with his pilot discount
and you can sell your existing heads.

> The existing Holley carburetor as fitted is too small for 400 HP, We're
> going to fit a Holley "Street Avenger "

Wait before you order the carb to finalize everything else.

> We'll be fitting a new Scat steel crankshaft, Scat longer than stock con
> rods, Probe forged pistons, molly rings, heavy duty bearings, high perf.
> steel damper, a billet steel flywheel, Centerforce HD diaphragm clutch
> assembly. Dynamically balance complete assembly.

Check with Brent Lykins. He supplied the SCAT stroker kit for my recent
403C build. He also internally balanced for a very good price with
excellent service.

I'd recommend against the Centerforce. Check with Dennis at the Pantera
Performance Center for his Pantera specific Mcleod diaphragm clutch.

> There will be Lunati hydraulic camshaft / lifter kit, new cam bearings,
> hardened pushrods, replacement rockers. double roller timing set

For what you are doing, I'd recommend a custom cam. I can design one
suited to your particular collection of parts, then cross it against
any off-the-shelf cams to see if there is something close or have
a custom one made. Custom flat tappets are quite inexpensive.
Custom hydraulic rollers are more expensive ($299 to $399) but may be
worth the extra expense.

> High volume oil pump, heavy duty driveshaft. High volume water pump

You probably won't need a high volume pump. Better is a blueprinted
standard volume pump.

> He'll then be building the engine, mount it on the dynamometer, run in
> and tune and then re torque components.

I'm not sure if you saw the post I made on dynoing my 403C.

> To supply as 393 stroker spec ( 6.4 Ltr ) @ around 460 HP

Go for the 393C. Be aware that SCAT only lists a flat top piston
393C kit (unlike the 408C where they also have a dished piston
version) but Probe will dish the pistons for an additional cost.
The pistons you will need will depend upon the chamber volume of
your heads.

> Any input or comments that you have would be very much appreciated.

With the proper cam, you should be able to hit 500 HP and still
be easy to drive on the street.

> Canton extra capacity, winged and baffled oil pan and pick up

As far as I know, Canton does not make a Pantera pan. A winged
pan will also not within the Pantera frame rails. Armondo, Aviad
and I think Kevko make Pantera specific pans.

I just went through the costing exercise for a couple of Pantera
owners as well as for my own Pantera and can help source the
right parts.

Dan Jones