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Top > Circle Track Engines > Circle Track 355 HP |
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CIRCLE
TRACK 350/355
P/N 88958603
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Circle
Track 350/355 |
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www.CrateEngineDepot.com |
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Based
on our popular ZZ4 performance street engine design, this engine steps
up the game with higher compression, a forged steel crank, and aluminum
heads.
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• Hydraulic-roller,
steel camshaft
• High-velocity D-port head design
• All-new parts, fully assembled with sealing bolts |
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A Satisfied Sanctioning Body Commenting on our Circle Track Sealed Crate
Engine Program:
"Our series is powered by the GM Performance Parts Circle Track
Crate Engines. We like them because the engines are equal, so the raace
results are in the hands of the drivers and crew chiefs."
Stan Lester
President and CEO
FasTrak Champion Series
RACER'S NOTES
• We factory-seal the 350/355 Limited Late Model racing engine with
special GM-branded, round-head bolts at the intake manifold, cylinder
head, front cover, and oil pan.
• We achieved the 355-hp rating with a Holley 650-cfm
four-barrel carburetor, Holley P/N 0-80541-1; 32-inch-long by 1-5/8-inch-into-1-3/4-inch
stepped headers with 3-inch collectors; and 92-octane gasoline.
Order your GM Performance Circle Track Engine by clicking below:
88958602
350/350hp
88958603
350/355hp
88958604
350/400hp
19171821
CT525/525hp
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Circle
Track 350/355 |
GM
Part Number |
Details |
| Engine
type: |
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Chevy
small-block V8 |
| Horsepower: |
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355 @
5250 rpm |
| Torque: |
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405 lb-ft
@ 3500 rpm |
| Displacement,
(cu in) |
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350 |
| Bore
x stroke (in) |
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4.00
x 3.48 |
| Block |
P/N
10105123 |
cast
iron 4-bolt with 1-piece rear main seal |
| Crankshaft: |
P/N
12556307 |
forged
steel |
| Connecting
rods: |
P/N
10108688 |
powered-metal
steel |
| Compression
ratio: |
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10:1 |
| Pistons: |
P/N
10159436 |
high-silcone
cast aluminum with offset, pins |
| Piston
rings: |
P/N
12528817 |
moly-filled |
| Intake
manifold: |
P/N
10185063 |
aluminum
dual-plane high-rise |
| Camshaft
type: |
P/N
10185071 |
hydraulic-roller
lifters |
| Camshaft
lift (in): |
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.475
intake/.510 exhaust |
| Camshaft
duration(@ .050 in): |
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208°
intake/221° exhaust |
| Rocker
arm ratio: |
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1.5:1 |
| Rocker
arms: |
P/N
10089648 |
stamped-steel |
| Valve,
exhaust |
P/N
10168514 |
1.50" |
| Valve,
intake |
P/N
10168465 |
1.94" |
| Valve
lash: |
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zero |
| Timing
chain: |
P/N
14088783 |
single-roller |
| Valve
springs: |
P/N
12551483 |
LT4 chrome
silicone |
| Cylinder
heads: |
P/N
12556463 |
aluminum,
58cc combustion chambers |
| Distributor: |
P/N
1104067 |
HEI |
| Ignition
timing: |
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10°BTDC
@ 800 rpm: 32° total @ 4000 rpm with vacuum advance disconnected |
Spark
Plugs:
Option: |
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R44
LTS gap @ .045
MR43LTS |
| Rpm,
maximum recommended: |
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5800 |
Fuel,
minimum recommended
octane: |
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92 |
| NOTE: The distributor we recommend with the 350/355
engine has a melonized steel gear. This MUST be used with engines with
steel camshafts, or engine damage can occur. |
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| CrateEngineDepot.com
800-441-5150 |
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