![]() I'll bet you never get to 32* before you get detonation with a 8-71 and pump gas. Too much total timing and your run into detonation. You'll have to do alot of T&T on the combo to get it dailed in right, but start with low timing. you will need 1/2" pickup welded in your tank, and use 1/2" fuel lines. Effective Dome Volume: Use (-) for Dome and (+) for Dish. If you go lean with a blower kiss the engine goodbye. Compression Calculator Simply fill in the form below to calculate your compression ratio Bore: (diameter) in. You'll need atleast dual 600 cfm carbs, and you better get good at carb tuning to get them both dailed in right. higher flow aftermarket water pump, and an alum 2 1" row rad in the biggest size you can fit. Then enter the total weight of your vehicle, as raced, including the drivers weight. To use this horsepower calculator enter the mph trap speed at the 1/4 mile mark from one of your dragstrip ET slips. Displacement 0.785 x 4 x 4 x 3.622 45.49 ci per cylinder Combustion Chamber Volume 4.36. Engine Rear Wheel Horsepower Calculator Based on total vehicle weight and 1/4 mile MPH. 006' out of the hole and using factory gaskets, it looks like compression would be bumped up to around 11.3:1. For the same size engine, the older engine would have been more fuel. So, using this calculator: Engine Compression Ratio (CR) Calculator, you can figure out the compression. ItStillRuns compares it to the LS small-block V8 in terms of durability and. Stay up to Date with Current Events, New Releases and Special Offers. Believe it or not, high-compression engines of the late ’60s, with compression ratios up to 12.5:1, had higher thermal efficiencies than many of today’s engines. Automakers may be able to solve air pollution problems. Effective Compression Ratio Calculator (Considering Cam Timing and Rod Ratio) Compression Ratio: Stroke (inches) Rod Length (inches) Intake Closing Point (Degrees)ABDC 0.050 lift +15 degrees: COMPRESSION RATIO: Submit. The 8-71 is gonna build alot of heat so you will need a great cooling system. For example: Lets say we build a 6.0 LS truck engine for a 10:1 compression ratio with stock heads. Likewise a reduction in compression ratio from 11:1 to 7.0:1 should result in a 12.3-percent decrease in power. For a SBC street 8-71 blown engine look for 1-3/4 tube headers and 3" dual exhaust pipes with great flowing mufflers like dynomax bullets or ultra flos You'll also pretty much have to have aftermarket heads (alum. Pro LS 4340 Forged Steel H-Beam Connecting Rod, 6. You don't want a big cam cause it will "bleed off" your boost. Calculator Compression Ratio Calculator Race >Free Horsepower Calculator Compression Ratio Calculator Race. Building a boosted engine is very diff than N/A. Use forged pistons (not cheap junk) go with ross, JE, SRP, etc, Good forged rods with ARP cap screws, Forged aftermarket crank, Look into "blower cams" with a LSA of 114-116. Roots blowers can't get away with the compression and boost that a centrifugal superchargers (pro charger, paxton, vortech), and turbos can.įor a pump gas street type blown engine I would run 7.5:1 to 7.8:1 SCR. With an 8-71 you better have LOW compression and very good bottom end parts.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |