In '96 I decided I had had enough of the steady oil leak
of the solid 230 6 cylinder, so I started replacing it with a 327 small block V8
that I had bought in high school to use in my '66 Impala while I was rebuilding
its motor. I am writing this 5 years after the swap, so the costs are only
the big ticket items. Sorry about the picture, it includes the recent TPI
setup only. I took it recently, and I never got a picture of it with the
carb. I also don't have any before pictures.
The motor was out of a '65 Impala, and was bored 30 over
to clean it up. The rebuild included balancing to increase the longevity
of the motor. The cam was a stock GM 300hp cam (presumably for a vette)
that I had previously used in my brother's truck. I bought it because it
was the highest performance cam I could find for the 327, without sacrificing a
smooth idle. I used World Products heads, instead of the 461 castings that
were stock in order to have hardened seats for use with unleaded gas. I
could have added hardened seats to the 461 castings, but that would have cost
the same as the new World Products heads, and the new heads also reduced my
compression ratio to a reasonable ~9.5:1 (10.25:1 was stock). To top it
off, I added a Holley 600 vacuum secondary Carb, and I used the combo for a
year.
The swap was very simple. All components from the
flywheel back were the same for the V8 as well as the straight 6, so there were
no modifications necessary. Even the 6 Cylinder motor mounts bolted up to
the V8. Basically very little extra components for the swap were
necessary, and included only the exhaust system and a alternator bracket.
I also took the opportunity to install a crossflow radiator and recovery
reservoir at the same time. I went to a radiator shop and bought a recored
one they had sitting on the shelf, and I don't know what it came out of.
Below is a cost list as best as I can remember.
Item
Price Vendor
Engine
Motor: '65 Impala block, crank,
etc.
$150 Private
party
Heads: World
Products
$668 Summit
Distributor: GM HEI
$91 Junkyard
Fuel
System: Holley 650 w/
manifold
$150 Swap Meet
Machine Work: bore, balance,
etc.
$550 Machine
Shp
Wear Items
Clutch:
$100 NAPA
Motor
Mounts
$50 Al's Auto
Antifreeze, Oil,
etc
~$101 Al's Auto
Radiator
Hoses
$30 Al's
Auto
Radiator
(Crossflow)
$160 Rad Shop
Install
Exhaust
manifolds
$50 Swap Meet
Exhaust
System
$150 JC Whitney
Alternator
Bracket
NC
w/ manifolds
Total
$2250
Cam Specs: (Crane
PN 968711)
rated at 300hp (GM PN 3733431)
Duration: Intake 195 deg Exhaust 202 deg
Valve Lift: Intake 0.390" Exhaust 0.410"
Head Specs:
Straight Plug
Chamber Size 67cc
Valves: 2.02" Intake, 1.60" Exhaust