Cranks from the iron Torqueflite era should have a different flange
distance than later cranks.
Bill Huff
At 10/26/201008:00 PM, Matt Proske wrote:
413 and 440 heads have the same
bolt pattern (see INDY cylinder head)
All the thick walled blocks will support a 0.060" overbore.
However, not everything was so identical back then and you always need to
check.
The minimum supported wall thickness is 0.080" but thicker is better
and that figure also depends on the output. Also wether or not it will be
higher combustion temperature (turbo/super charged applications). Race
only engines can be bored larger if the water passages are filled with
cement - but obviously this is a race-only modification...Info found in
"Big Block Mopar performance" (by chuck senatore)
413/440 cranks are interchangable too.
Matt
--- On Mon, 10/25/10, William Huff <whuff@xxxxxxxxxx>
wrote:
- From: William Huff <whuff@xxxxxxxxxx>
- Subject: Re: [FWDLK] RB build question
- To: L-FORWARDLOOK@xxxxxxxxxxxxx
- Date: Monday, October 25, 2010, 11:08 PM
- Can always take it to a good shop and have the cylinder walls sonic
tested for thickness. I think I have read that .200" is a good
figure not to go below. Also may run into ring seal problems if the
walls are too thin.
- Bill Huff
- Homstad wrote:
- > Jim,
- >
- > My expectation is that as the factory bore was increased, the
water jackets were also moved to maintain a constant wall thickness after
factory machining. Thinner walls could mean increased heat tranfer to the
cooling system and less meat for future over bores.
- >
- > I like to stay conservative on the over bore for wall strength
and cooling system heat load. I would probably go to a 426, but if engine
machine specialists say your remaining wall at 440 is OK, then go for it.
Can 413 heads feed a 500 stroker?
- >
- > Dave Homstad
- > 56 Dodge D500
- >
- > ---- Jim Rawa
<
jrawa@xxxxxxx> wrote:
- > >
- > >
- > > msg prev rejected, sorry if this is a repeat:
- > >
- > >
- > > ok,
- > >
- > > i need input from someone versed in machine work and
experience with B/RB builds... i've done plenty of the typical +.030
builds on 440s, etc but havent ventured into the areas where some
builders are going now due to "core shortages"
- > >
- > > here's the scenario- a 413 has a 4.19 bore... i've done my
own rough investigations into the specimen block's wall thickness to
warrant a .060 overbore to std size 426 wedge pistons of 4.25....
- > > the real question is... the outer sand casts of the 413/426
wedge/440 are dimensionally identical [sans the 65/66 extra bosses above
the oil pump for c-body mounts]... is the inner sand cast of the same
mold? as in are 413's cast with thick enough walls to go the full route
to std bore 440 size of 4.32??? has anyone done this? it appears so as a
sample stroker has the extra bosses in a publication i recently saw,
which unless its a 66 440 block.. it must be a 413 pushed out to a 4.32
bore to attain the 492 ish displacement with the 4.125 stroker crank [all
numbers off the top of my head here- in case i need correcting]
- > >
- > > so the main item at question- given ideal core alignment
[minimal/no shift = concentric constance] will the 413 block handle the
full 440 punch out or only the 426?? or say 426 + .030..???
- > >
- > > i have plenty of 440s... for myself... i have a few
413s - 1 of which is destined for a freinds resto i have underway-
his plans are a future stroker- so if the block can take it- we may as
well build it as a 440 for now and do the rotating assy swap in the
future, keeping std 440 bore, making just shy of a 500 stroker.
- > >
- > > experienced input greatly appreciated.
- > > jim
- > >
- > >
- > >
- > >
- > >
- > >
- > >
- > > -----Original Message-----
- > > From: '57 Super D500
<
57SuperD500@xxxxxxxxxxxxxx>
- > > To:
L-FORWARDLOOK@xxxxxxxxxxxxx
- > > Sent: Mon, Oct 25, 2010 9:13 am
- > > Subject: [FWDLK] Power Car
- > >
- > >
- > >
- > > Hereâ??s something you will like, �¼ scale powpower
cars, including several Forward Look ones:
- > >
http://www.powercarcompany.com/Picture%20Gallery.htm
- > >
- > >
- > >
- > >
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- > >
- > >
- > >
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