highest compression and still on pump gas?

Do you have any idea on the PT# for the pistons? Or the size of the valve reliefs, I can't crunch any numbers with out it.

Read up on the Engine Masters series that PHR does, those guys pull out all the tricks to run on pump gas. I think the last winner in the big block shootout ran 11.5:1 C/R. But they have to use 91 octane.

fiveoho said:

bud i sure dont.

not sure when i can find out. if i can, i will let u know.

can it still make good power if it was to turn out around 9.5:1?

Click to expand...

Sure my old 302 combo only had 8.8:1 after notching the pistons, made 340RWHP and went 11.7's @ 116.

vikingpower said:

Read up on the Engine Masters series that PHR does, those guys pull out all the tricks to run on pump gas. I think the last winner in the big block shootout ran 11.5:1 C/R. But they have to use 91 octane.

Click to expand...

I agree however that can get expensive...

SHORT BLOCK
-89 Block
-89 Stock crank, rods and piston (notched for clearance)
-AFM N-61 Cam
-FMS Steel Timing Chain
-Canton 7qt T-Style oil pan and pick-up
-Melling Standard Volume Oil Pump
-ARP Pump Shaft

TOP HALF
HOLLEY SYSTEMAX II KIT
-Holley Avenger Series Heads PT#300-575 2.02" x 1.60" valves port matched to 1262 gasket
-Holley SysteMAX II upper ported to 80mm
-Holley SysteMAX II lower port mathed to a 1262 gasket
-1" Phenolic Spacer
-75mm Accufab TB
-80mm EGR DELETE Plate (custom)
-76MM C&L KIT
-Fabbed Alum Valve covers with Stef's breather tank

COOLING SYSTEM
-Ron Davis Racing Radiator
-Stewart High Flow Water Pump
-180 Degree Thermo
-16" Perma Cool Electric Fan

FUEL SYSTEM
-Walbro 255lph HIGH PRESSURE pump
-30# Injectors
-Stock rails and lines
-Paxton AFR

EXHAUST
-1-5/8" Ceramic coated Mac long tubes
-2-1/2" MAC Flowpath Off Road H-Pipe
-2-1/2" MAC Flowpath Cat Back DUMPED

SUSPENSION
-70/30 Lakewood Struts
-50/50 Lakewood Shocks
-Eibach Drag launch kit
-Steeda Chrome-Moly Sub frames
-SSM lower GONE 11/1/2002
-Metco Aluminum lowers, anti squat plate not installed, Delrin bushings
-Stock Boxed Uppers GONE 11/1/2002
-JD's Performance Double Adjustable Uppers
-RNH PERFORMANCE Stainless Steel torque box re-enforcement kit (e-mail me for details rick91gt@suscom.net)
-JDM Caster/Camber Plates
-S&W 8pt FULL CUSTOM with X brace.

DRIVE TRAIN
-3:73 FMS gears
(SOON TO BE 4:30)
-STOCK AXLES! (SOON TO BE STRANGE SPOOL 33 SPLINE AXLES, C-CLIP ELIMINATORS)
-FMS Aluminum Drive Shaft
- Energy Suspension Tranny Mount and Frame Bushings
-Lakewood SFI Bell housing
-SPEC Stage III Clutch
-UPR triple hook Quadrant and Cable
-ROMAC SFI Balancer
-Mid South Eliminator Alum. Wing

ELECTRONICS
-MSD 6A
-MSD Blaster 3 Coil
-MSD Billet Dist.
-LIVE WIRES
-SPEEDBRAIN ECU
-Power Master 140amp Chrome Alternator

www.rnhperformance.net

Yes you should dyno over 300hp. But it doesn't matter what we say, if you really want to know get the car running and throw it on a dyno to tune it. That street heat manifold will be a restriction. I had it on my old 302 with a smaller cylinder head and it was a restriction. Your engine combo would like an rpm manifold with a ported lower

You can always swap to a track heat upper. Its a direct fit/swap.

Yep. Hence why its a direct fit/swap.

Also, what accessories are you running? I'm assuming all of them. If you delete your powersteering or a/c (both)...that will gain you some more power as well...but I figure if you want to daily drive the car I wouldn't...

Yep, the Street Heat will have good bottomend...