What type of gas & octane level for this SBC?
Thread Starter
Registered User
Joined: Sep 2013
Posts: 3
Likes: 0
What type of gas & octane level for this SBC? Hi, I just bought an old chevy hot rod truck and was hoping someone could tell me what type of gas & octane level is required for this vehicle? Also, any idea on what horsepower this motor/setup may produce and is there any unique things (i.e., precautions, must do's, etc.) I need to know about regarding this blower on a sbc?
Motor/truck specs: pro built 355, 4 bolt main block, Scat Steel Crank, Scat forged H-Beam rods, Comp Roller Cams, Crower Roller Lifter’s, 1.6 Chromolly steel Roller Rocker Arms, Magnum push rods, Air flow research 195 street/strip 74cc Aluminum heads with Stainless Steel valves, 7/16 Screw in studs. B & M 162 Super Charger 10PSI. Boost, Static Compression 12.5 to 1. Pro Built Turbo 350 transmission, Custom built shift kit with 2800 rpm stall torque converter. Three inch Mandrel bent exhaust into 3” super 40 Flow master mufflers. Narrowed Ford 9” rear end, limited slip, Currie Ent. 411 Third member, Hampton rear axles.
Thanks for sharing your expertise!
Motor/truck specs: pro built 355, 4 bolt main block, Scat Steel Crank, Scat forged H-Beam rods, Comp Roller Cams, Crower Roller Lifter’s, 1.6 Chromolly steel Roller Rocker Arms, Magnum push rods, Air flow research 195 street/strip 74cc Aluminum heads with Stainless Steel valves, 7/16 Screw in studs. B & M 162 Super Charger 10PSI. Boost, Static Compression 12.5 to 1. Pro Built Turbo 350 transmission, Custom built shift kit with 2800 rpm stall torque converter. Three inch Mandrel bent exhaust into 3” super 40 Flow master mufflers. Narrowed Ford 9” rear end, limited slip, Currie Ent. 411 Third member, Hampton rear axles.
Thanks for sharing your expertise!
You cant run a 12.5:1 NA (naturally aspirated) motor on pump gas. if it really does have that much compression i hope you like detonation.
Ask the previous owner for a build sheet of the motor or receipts. that will tell you what is really in your new motor.
Ask the previous owner for a build sheet of the motor or receipts. that will tell you what is really in your new motor.
Thread Starter
Registered User
Joined: Sep 2013
Posts: 3
Likes: 0
Thx for the feedback. I will check the build sheet and go through the large box of receipts to see exactly what is in the motor then will update this thread with specifics and solicit advice at that time. More to follow in a few days. Thank you gents!
Trending Topics
Staging Lane
Joined: Apr 2009
Posts: 65
Likes: 0
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo There are guys using it on 11.5:1 motors on 20+ psi of boost so 12.5:1 and 10 psi should put it in the same boat.
