Roadkill Extra appears every single weekday at Motor Trend On Demand it's a
show that gives you question-and-answer sessions deeper looks into our project
vehicles behind-the-scenes stuff and here's a sample right now of one of the
shows that you missed last week on Motor Trend On Demand.com you can watch them
all with a 30-day free trial with thrashing this car kind of hard oh we're
just getting started are you kidding me last time you saw this thing on Roadkill
Extra it was not good we were taking the engine out of this thing because it's
all filled with gravel sand from our incident on Roadkill Garage where we
took it into the sandstorm but the question now is do we rebuild the 318 or
do we do something else ah you know I kind of want to rebuild
the 318 you're still stuck on it uh yeah you know I just feel sorry for the
little guy you know it could be a pretty good engine and we already have it when
we were taking it out that's extra when we were taking it out remember we were
talking about other 318 carried a stigma in the 80s yeah I know but this is 2017
I know so it doesn't have the stigma but my question is so you decided it needs
to be overboard right well look I mean the compression ratio was less than
seven to one so you want 6.9 so we're buying pistons anyway right well see
you're getting to my point if you're buying pistons anyway and it just says
spindly 273 typed rods in it you're buying rods anyway you're a 300 dollar
crankshaft away from building a stroker and then at that point why build a 318
stroker when all you need is a 360 block to build a 408 well yeah I know it dominoes
I know I know it I can concede your logic there but the 318 given our heads
will probably utilize that in a really nice rpm range up to 7000 rpm I think a
basically stock-based 331 stroke motor is a safe bet it's not going to blow up
put it in 331 that's the stroke 3.30 3.31 yeah stroke I thought it was a 4
inch crank in there and look at these little spindly main caps now you're
starting to really stress the bottom ad plus we've
already proven on engine masters that if you want to just run an out-of-the-box
cylinder head that doesn't require a special valve train pretty much the
ports are limited you know in air flow and so 408 just runs out of steam yeah
because we're putting aluminum heads on it and we're going to run Edelbrock's
which we already have right and their box bone-stock so you want a 400 inch
motor that runs out of steam at 55 or 5200 rpm or do you want to scream in
3:18 demon within Tunnel yeah I mean it would be ridiculous having that motor
with the tunnel around just revved to 5 grand and you shifted but it just seems
so ridiculous to buy rods and pistons for a 318 you don't want to at least get
a 360 block and do the same thing well this crank won't go on a 360 block of
the journal diameter No so you would have to find a complete core 3 6 I'll
tell you what we could do to really cut a lot to cost out of this whole
operations what is we can use takeoff rods out of a 360 which is a style of
rod that later 318 came with better be here they're totally beefy you can
remove them to 7 grand all day long that we took out of the 360 from the
vanishing paint challenger bowls which number throws anything away okay yeah so
I mean so we're going to go straw stock 360 rod new piston it's already got a
10-10 crank that looks really sweet as a matter of fact okay I think we got
severely criticized for no air cleaners and fan going through the motor and I
will have to fix that but you guys took this thing to the drag races of Michigan
the Roadkill night's event yeah that came straight on a trailer it got put in
a parking lot at the storage yard and got rained in yeah and I ran a hone down
one of the bores just to have a look oh yeah they're even these bores the sand
did almost no damage whatsoever I don't even see any scouring it's the rust it
was the rust from the water inside the bores that just really killing us water
in an engine it's just the worst yeah and I put a board gauge in it the pits
are about a towel and a half deep that means you're going to have to take three
thousandths out you can't home that much out of it so we're going to over bore it
it definitely needs over boring but really you're
at the cost of pistons and the board job if you really really in rings and
bearings well you're just normal you're going to need that anyway so you're
saying that's way cheaper than if we acquired a 360 and do the same thing
okay I guess I'm sold really yeah I can build 318
seriously yeah okay I'm really stoked about they're so excited about the
smaller displacement engine I know because I want I think to rev like just
the Banshee it's going to be awesome off sure okay
man I might even stock valve train oh no we can't we need adjustable oh maybe
we'll use a hydraulic what a mighty hydraulic to save money okay uh you just
watched it in real time that was legitimately the decisions Steve and I haveve
been talking on the phone for I don't know a couple weeks about what we're
really going to do it this thing because 318 just I don't know still wonder why
you build an engine that small but but we're gonna yeah and you know I've built
a few 400 horsepower three teams for the magazines like three different
combinations but I want to take this up to maybe just the next level maybe with
the tunnel ram of 450 horsepower 318 oh I know it'd be great yeah we have to
tell everybody the one last thing you found out what disassembling this I
don't even remember compression ratio oh yeah I think I mentioned it earlier in
our conversation but the pistons were a hundred and sixty thousand syn the hole
which means below the deck height so you have killing compression right yeah
that's a bunch of clearance volume plus it had open chamber heads and distance
yeah so what was the final number six point nine two one six point nine one no
wonder things let ask you thats a 318 with a cam and a tunnel ram c no wonder it was
a turd I've got a question for you legitimate question to it okay how much
power do you think this thing was putting out the way it was I've got a
number in mind 318 just stock heads six point nine to one a 224 cam tunnel ram stock
manifolds
140 so it's exactly what is it really yeah because it works because I was just
talking to Brad a little while ago our cameraman it uh-huh he's like well
that's 400 horsepower sounds pretty good but how much was the making before and
I'm like probably around 140 yeah I think that's about right though watch
coming up on Roadkill Garage we're going to triple the horsepower of this thing
right that would be great yeah pretty much that would be cool yeah
thanks for leaving we do the 318 okay do that I'm going to go wire the crusher
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