The 18 - 20 CID difference would be of marginal consequence on Horsepower or
torque.....but it might make it easier to package since you have a block
already in the truck.
Either way...390 or 408, the 4" Stroke crank will increase the Torque (and
HP) due to the increase
in Rod Ratio and Rod Speed (I.E. More Leverage)
I'm not sure what the actual CID increase on the 318 would be, the 318
Stroker kits use a internally balanced 4" Stroke crank, custom piston design
and a stock type I-beam or optional H-beam Rod.....they advertise the kits
as "390" Strokers.
This package would be easier to install and use the stock block so it would
be virtually undetectable
by the Smog Inspectors and I'd think the low end torque would be almost as
good if not the same as the 408.
You could also use the stock Flywheel or Flexplate, Clutch or Torque
Converter, and it'll work with the original tranny too...
I do know this much......when the 318 in my 99' finally gives up it'll get a
390 Stroker kit....
Ron
01' Dakota Sport RC 3.9 ...
99' Dakota SLT CC 5.2...
From: "James Calder" <jCalder3@cfl.rr.com>
Reply-To: dakota-truck@dakota-truck.net
To: <dakota-truck@dakota-truck.net>
Subject: RE: DML: RE: Re: 408
Date: Sat, 2 Oct 2004 19:53:50 -0400
Thats a very good suggestion Ron. Which brings uo a couple questions:
Why can a 318 be bored and stroked to a 390 (72 additional cubes) and a 360
be bored and stroked to a 408 (only 48 additional cubes)?
Comparing 2 naturally aspired similarily built engins, one a 390 and one a
408, how much more HP/TQ can be gained from the 408?
Thanks for your help
James
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Ronald Taylor
Sent: Saturday, October 02, 2004 6:57 PM
To: dakota-truck@dakota-truck.net
Subject: RE: DML: RE: Re: 408
Jim.....
If I can make a suggestion........To build a 408, you'd need to use a 360
block and have it bored and machined.
Why Not use the original 318 block and install a 390 stroker kit in it?
You could purchase a quality kit for about what the ported R/T heads run and
get the Truck running then go back later and swap the heads out for the
ported R/T heads...
I'd be more apt to want a good shortblock in the truck that is built solid,
so I could build on top of that when funds permit.
Just my .02....
Ron
01' Dakota Sport RC 3.9 ...
99' Dakota SLT CC 5.2...
From: "James Calder" <jCalder3@cfl.rr.com>
Reply-To: dakota-truck@dakota-truck.net
To: <dakota-truck@dakota-truck.net>
Subject: DML: RE: Re: 408
Date: Sat, 2 Oct 2004 07:38:03 -0400
I'm in Palm Coast, FL. I need to keep this build inexpensive as possible so
I'll probably reuse the lifters, push rods and cam (if it suitable) since
they have only 5000 miles on them. Regarding the pistons, I would
defiantly be interested if they are the right ones to use with the build.
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Orange383
Sent: Friday, October 01, 2004 2:21 AM
To: dakota-truck@dakota-truck.net
Subject: DML: Re: 408
Where are you located? Just curious, may be interested in the 318 if it
stays mostly complete. Also, if you decide to use the MP pistons (.020
over) I have a brand new set I will probably be selling.
----- Original Message -----
From: "James Calder" <jCalder3@cfl.rr.com>
To: <dakota-truck@dakota-truck.net>
Sent: Thursday, September 30, 2004 4:37 PM
Subject: DML: 408
>
> I'm looking into swapping my 318 for a 408. On my current 318 I already
> have the following parts I will reuse:
> Jet Hot Coated Doug Thorley Headers, M1 Intake, MSD
ignition/wires/coil,
> MP PCM, Viper Fan, Underdrive Crank Pulley and accessories (water pump,
PS
> pump, etc.) > > Opinions on reusing the following:
> Ported Stock TB
> KRC Ported Stock Heads
> Competition Cams 604:lift .512 dur@.050 210, 220 / LSA 112 > FMS 19lb
injectors > > If I were to get an F&B or Fastman TB, what size should I go
for?
> If R/T Heads were used which ones?
> Is the MP stroker crank the best deal?
> Should I get a junkyard block or new? Any ideas on price of a new 360
>
block?
> What does it have to be bored out to?
>
> Things I know I would need to get (please add to the list):
> Stroker Crank
> 360 Block
> Connecting Rods
> Pistons
> Gasket/Bearing Rebuild Kit
>
> To help in the suggestions, I do a lot of stop and go driving, tow a 18'
bow
> rider (only a few times a year). I don't plan on racing but want to be
able > to kick but if I do. No blower, turbo or nitrous planned. How will
my > current cam perform? Can stock 360 rods be used with the right
pistons?
> How do I select the correct pistons?
>
> When this is all done, I'll have for sale, a 318 block .030over, crank,
> pistons, KRC ported heads (if I don't reuse them), comp cam 604 (if not
>
reused) all with about 6000 miles on them. I bought all the parts from >
Marty @ KRC a couple years ago.
>
> Here's my current setup:
> 93 CC, 5.2, Rebuilt engine 30 over, 604 Competition Cams:lift .512
dur@.050 > 210, 220 / LSA 112, Heads Ported/5 angle , 2bbl M1 Intake, Jet
Hot Coated > Thorley Headers, Ported TB, True Duals w/ FM 70's and Cuda
Tips, MP PCM, MP > Cast Valve Covers, MP Cast Air Cleaner, K&N Filter,MP
DRT Chain, MSD 8.5mm > wires, MSD 6T, Blaster coil, Underdrive Crank
Pulley, APS 46 RH Transmission > w/ All The Options, MP Torque Converter,
Viper Fan, Lowered 2-3. Energy > Suspension body mounts, A arm bushings &
sway bar bushings, 4.10's W/ Dana > Spicer Trac Loc, Road Master Active
Suspension, Doestech Shocks, Front and > Rear Anti Sway Bars, Cowl Hood,
Sir Michaels Roll Pan.
>
> Thanks for any hints, tips and suggestions.
>
> James
>
>
>
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This archive was generated by hypermail 2b29 : Mon Nov 01 2004 - 10:47:41 EST