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Send PMWaco, TX - USA
Joined: 1/22/2010
Posts: 11
Vette(s): 1965 Marina Blue Coupe -- 350/350, 4-sp
1966 Maroon Coupe -- 427/390, 4-sp
1978 NHRA B-Gas Coupe (Crew Member '70-'75)
1985 White Targa Top--Stock 350 TPI
1991 Polo Green Convertible -- ProCharged 383, 6-sp.
Hey Guys/Gals...
I'm building a mega-383 for my '91 6-speed convertible. It's going to be running a 58mm throttle body on a TPIS Mini-Ram intake along with totally reworked stock heads and a ProCharger D1 supercharger. The cam was custom ground for the engine but is basically a nitrous grind, which was recommended by several different cam manufacturers. My question is simple: what rating fuel injectors should I be installing on this engine. All the sizing worksheets I've found on the Internet suggest 48-50 lbs/hr. Does this sound right? I know absolutely *nothing* about sizing fuel injectors, so any help will be greatly appreciated! Also, how about a spark plug heat range recommendation.
Thanks a million!
Geof Schwer
I'm building a mega-383 for my '91 6-speed convertible. It's going to be running a 58mm throttle body on a TPIS Mini-Ram intake along with totally reworked stock heads and a ProCharger D1 supercharger. The cam was custom ground for the engine but is basically a nitrous grind, which was recommended by several different cam manufacturers. My question is simple: what rating fuel injectors should I be installing on this engine. All the sizing worksheets I've found on the Internet suggest 48-50 lbs/hr. Does this sound right? I know absolutely *nothing* about sizing fuel injectors, so any help will be greatly appreciated! Also, how about a spark plug heat range recommendation.
Thanks a million!
Geof Schwer
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22742
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
The rating you post sounds right to me. What about your fuel pump, tho? Are you planning on replacing it? You may need to in order to keep the supply of fuel going to the infectors at a safe volume. You certainly don't wanna lean the engine out on a hard run due to a weak, or under-capacity pump.
Joel Adams
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in Forum: C4 Engines, Driveline and Handling
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