Re: Power potential of 360? - long

From: Bob Tom (tigers@bserv.com)
Date: Tue Sep 28 1999 - 12:10:58 EDT


At 09:35 PM 9/26/99 -0400, you wrote:
> <snip>
>I'm just trying to figure out my options and plan for the future.
>My goals are a very, very fast Dak which is also streetable. A big
>goal is also to keep it as cheap as possible! Obviously, the 360ci
>Magnum engine is the easiest choice as it'll bolt right in and many
>parts from my current 318 will interchange.

I think that the 360s (pre-mags & mags) have different motor mounts
on the driver's side. Minor but an expense to factor in.

<snip>
>I think I'll need anywhere from 650-800hp to be where I want.
>(very low 11's, maybe even dipping into 10s).

OK ... 10s or lls for the 1/4. For the street?

<snip>
>Here are some ideas I've had <snip>

>Take a 380 crate motor or Kammer & Kammer/Hughes prepped 360, drop it
>into my Dak, install my MPI M1 manifold and F&B Stage II TB for now
>(or the MP 4bbl TB later), add some larger injectors, use an FP
>Performance SEFI8LO system to handle the fuel injection duties,
>either the Holley Annihilator or Pro Strip Annihilator w/ Holley's
>coil for spark (and useful rev limiters and switches), and add an NX
>wet plate system.

A '93 RC Dakota in Detroit has a modified 5.2L and added juice for
a 11.70 @ 116 run (Sep'99 Mopar Muscle). It doesn't say what it can
do without the juice but, factoring out the juice, it must be still
quick (low/high 13's ?). It has a .030 overbore, TRW forged pistons,
Viper Rods on a stock crank, heads with 2.02"/1.65" valves, Crower
1.7 rockers, stock tb on the M1 single plane, managed with a '93
360 Ram computer with a customed Superchip E-prom, 24 lb/hr injectors,
Paxton Kamikaze fuel pump, 1/2" fuel lines, Pro Finish hood, DT header
with a custom exhaust, single stage Nitrous Express system, 518 OD
fitted with a Fairbanks converter, custom shift kit, lowered 2/4,
4.10:1 gears in the 8 1/4 rear end.

Because you already have the engine, M1, ported tb, headers and exhaust,
plus other mods, I would guess that this alternative would be a few
thousand less than the setup that you have in mind with a 380 crate
or a prepped 360. I would think your current setup with a matched torque
converter and 4.10 gears would have you in the high 13s without juice.
All you would need is strengthen your valvetrain and drivetrain components
for durability.

One area that I would look into for more torque is to stroke the 318.
A 3.58" stroked 318 becomes a 343 cid. IMO, the 360's torque is mainly
from its longer stroke.

>A beefy rearend (8.75-9.75 with 4.10s or so) is probably going
>to be a nescessity. When I do the rearend, I've been thinking of
>moving the springs inboard to make way for some WIDE rear tires.
>If/when the NV3500 dies or I get sick of sluggish and slow shifts, a
>race prepped auto (you win, Bill) ;-) with a ratchet shifter and
>possibly a transbrake.

That plus drag radials or slicks will get the power to the ground.

I'm currently doing slow-pokey 15.2s (hoping for 15.1s at least with
cooler weather) but every time that I'm at the track, someone comes
around the pits and asks if it's a 360. Feels good when I tell them
it's a 318. One old man's opinion.

Bob, Burlington, Ontario
'97 FR CC Sport, 5.2L, 3.55 SG, auto., 15.268 @ 88.86



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