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1969 Firebird "Little Big Chief" Chassis Dyno Test

Pin Guage Front View
With the secondary jets removed,... 
   
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Pin Guage Front View
With the secondary jets removed, a pin gauge was used to accurately determine the size. They were found to be 0.094 inch. Bob changed the jets to 0.098 inch.
Jet Change Front View
While Bob did the change jet... 
   
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Jet Change Front View
While Bob did the change jet change, Craig tweaked the floats to make both perfectly level. It was found that one was slightly higher than the other.
Carburetor Reinstalled Front View
With the carburetor reinstalled,... 
   
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Carburetor Reinstalled Front View
With the carburetor reinstalled, the tuning decisions produced a perfect mixture strength of 12.81:1 at full throttle (resulting in over 250 rwhp) and nearly 14.7:1 at cruise. The idle speed was readjusted, along with the mixture screws.
Smile Front View
Ann, Andrew and Jason are... 
   
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Smile Front View
Ann, Andrew and Jason are now all smiles with their beautiful and strong-running Pontiac!
1969 Firebird Side View
The Korb family's '69 Firebird... 
   
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1969 Firebird Side View
The Korb family's '69 Firebird features the 350 engine, a 2,200-rpm stall lock up converter, a 200-4R trans and 3.90 gears. It was built for cruising and spirited street performance and to go on Hot Rod's Power Tour.
Engine Build Up Worksheet
Displacement359 ci
Bore/Stroke3.905/3.750-in
Bore/Stroke Ratio1.041:1
Rod/Stroke Ratio1.77:1
Bottom End
BlockStock 350 Pontiac
Deck Height10.210-in
CrankshaftStock Pontiac 3.75-in stroke
BalancerStock Pontiac replacement
Connecting RodsPontiac cast 6.625-in
BearingsFederal Mogul 0.10 undersize
PistonsSterling cast flat-top with four valve reliefs
Piston PinsSterling, press-fit
Piston RingsSpeed-Pro moly faced
End Gap0.017-inch top, 0.015-inch second
Piston to Deck Height-0-
Rod BoltsARP
Oiling System
Oil PanMilodon wet-sump
Oil PumpMelling high-volume
Windage TrayPontiac
Heads
Casting No.17
Combustion Chamber Volume80 cc
Flow at 28 Inches of Depression224/196-cfm at 0.600 lift
Valves2.02/1.66-in Manley SS
Compression Ratio9.01:1
RetainersComp Cams chrome-moly
Rocker StudsARP
Rocker ArmsHarland Sharp 1.5:1 roller
Push RodsComp Cams 5/16 x 0.80-in wall
Push Rod Length9.130-in
Cam
BrandComp Cams flat-tappet hydraulic
Duration at 0.050-in218/224-deg
Lift0.462/0.470-in
Centerline106-deg
LSA110-deg
Installed Position106-deg
LiftersComp Cams
ValvespringsComp Cams dual design
Seat Pressure117 psi at 1.600 in
Open Pressure232 psi at 1.100 in
Timing ChainComp Cams roller
GasketsFel-Pro
Induction
CarburetorEdelbrock 650-cfm, No. 1806
IntakeEdelbrock Performer RPM, dual-plane
Fuel Line3/8-in
Ignition
DistributorMSD Pro Billet
PlugsAutolite No. 86
WiresMoroso
Exhaust
HeadersHedman 1.75-in primaries, 3-in collector
System2.5-in dual, Flowmaster mufflers

RaceKrafters Automotive Machine
1140 Dillerville Rd.
Lancaster
PA  17601
717/399-8780

www.racekrafters.com

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Pontiac Solstice Research
Pontiac Solstice Get updated on all your car buying needs from safety features, to specs, to crash test ratings and options. Get all the information you need if you are interested in buying a new car like the Pontiac Solstice. The L4 standard engine in the Solstice gives you 173 horsepower with an estimated 22 mpg. It has a comparable trade in value which should come in handy when you go to shop for your next car. The Pontiac Torrent and the Pontiac G6 are other vehicles that might interest you.

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