Cylinder Volume Calculation
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Joined: Feb 2005
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From: South Carolina
Car: 91 GTA - 94 TPI Suburban
Cylinder Volume Calculation
Someone running a 383 with $8D E-mailed me with some problems and I asked if I could help him out.
I identifed two problems, knowing he was running a stock AUJP bin:
1. Injector Constant - He has 24# injectors.
2. Cylinder Volume - Set to 713 cc/Cyl
I found this cool on-line calculator that converts cubic inches to milliliters: http://www.metric-conversions.org/vo...illiliters.htm
Well, 713 cc/Cyl is actually closer to 348 cubic inches; but I suppose is close enough to not make a difference on a 350.
A lot of people run a 30 over 350. So I was wondering would running a 355 ci be affected by not changing the constant? It calculates to 727 cc/Cyl. Or is it too small an amount to really matter?
I told him to set his Cylinder Volume constant to 785 ccc/Cyl for his 383 cubic inch engine and his injector constant to 24 and make sure the pressure was set correctly.
Any thoughts on the question above? Ed www.edgesz28.com
I identifed two problems, knowing he was running a stock AUJP bin:
1. Injector Constant - He has 24# injectors.
2. Cylinder Volume - Set to 713 cc/Cyl
I found this cool on-line calculator that converts cubic inches to milliliters: http://www.metric-conversions.org/vo...illiliters.htm
Well, 713 cc/Cyl is actually closer to 348 cubic inches; but I suppose is close enough to not make a difference on a 350.
A lot of people run a 30 over 350. So I was wondering would running a 355 ci be affected by not changing the constant? It calculates to 727 cc/Cyl. Or is it too small an amount to really matter?
I told him to set his Cylinder Volume constant to 785 ccc/Cyl for his 383 cubic inch engine and his injector constant to 24 and make sure the pressure was set correctly.
Any thoughts on the question above? Ed www.edgesz28.com
Last edited by EdgesZ28; Aug 29, 2005 at 08:03 PM.
Junior Member
Joined: Jan 2005
Posts: 28
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From: Memphis, TN / Macon, GA
Car: 1991 Formula
Engine: 355 with ported & polished vortech heads and a 269 cam.
Transmission: 700R4 (w/ shift kit) and 2000 stall TC
Im running a 727cc/cyl and 24lb injectors, my BLM & INTs work real well. seems to be happy with the adjustments. Before, it would act real screwy, under compensate, over compensate, etc. Having your constants correctly calabrated makes tuning easier.
Joined: Jan 2005
Posts: 10,450
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Originally posted by tail
Im running a 727cc/cyl and 24lb injectors, my BLM & INTs work real well. seems to be happy with the adjustments. Before, it would act real screwy, under compensate, over compensate, etc. Having your constants correctly calabrated makes tuning easier.
Im running a 727cc/cyl and 24lb injectors, my BLM & INTs work real well. seems to be happy with the adjustments. Before, it would act real screwy, under compensate, over compensate, etc. Having your constants correctly calabrated makes tuning easier.
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