what MAF should be used?

stanger8172 · 02-09-2001, 09:19 AM

My friend is getting a 70mm throttle body and he wants to know what size MAF he should use and if he has to calibrate it to his stock 19lb. injectors. Any ideas? Thanks
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he has: '86 LX 306, ported stock heads, 289 rods, high pressure oil pump, K&N, 70mm TB, Comp box upper, GT40 lower,stock 19lb. injectors and fuel pump, Holley AFPR, BBK 1 5/8 shorties, offroad H-pipe, Warlock mufflers w/dumps, 4.33'd, C-4 w/cheetah shift kit, B&M shifter, Flexalite electric fan, Summit battery in the trunk kit

Green92LX · 02-09-2001, 10:18 AM

If he is mostly stock, I suggest a 65mm Throttle body with a 75 MM mass air meter. You can get the mass air calibrated for any size injectors that you have.

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1992 5.0 LX, Edelbrock 6037 Heads, Cobra Intake,E-303, 1.6 Roller Rockers,65MM Holley TB, 75 MM Pro M Mass Air, 190 LPH FP w/ 24 lb injectors,BBK equal length shorties,offroad h-pipe,Mac Flowpath Mufflers, Pro 5.0, 3.73's,Motorsport "C" springs,welded subframe connectors, Ponies w/ 225/50 Nittos, 93 Cobra Spoiler

Daily driver: 89 Coupe with 205K plus, BBK shorties,offroad h-pipe,2-chamber flowmasters with dumps, cut and welded stock shifter...and it runs like a champ.

02-09-2001, 09:19 AM	#1
stanger8172 Registered Member Join Date: Nov 2000 Location: Milwaukee,Wisconsin Posts: 380	what MAF should be used? My friend is getting a 70mm throttle body and he wants to know what size MAF he should use and if he has to calibrate it to his stock 19lb. injectors. Any ideas? Thanks -------------------- he has: '86 LX 306, ported stock heads, 289 rods, high pressure oil pump, K&N, 70mm TB, Comp box upper, GT40 lower,stock 19lb. injectors and fuel pump, Holley AFPR, BBK 1 5/8 shorties, offroad H-pipe, Warlock mufflers w/dumps, 4.33'd, C-4 w/cheetah shift kit, B&M shifter, Flexalite electric fan, Summit battery in the trunk kit

02-09-2001, 10:18 AM	#2
Green92LX Registered Member Join Date: Jun 1999 Location: North Haven,CT Posts: 336	If he is mostly stock, I suggest a 65mm Throttle body with a 75 MM mass air meter. You can get the mass air calibrated for any size injectors that you have. ------------------ 1992 5.0 LX, Edelbrock 6037 Heads, Cobra Intake,E-303, 1.6 Roller Rockers,65MM Holley TB, 75 MM Pro M Mass Air, 190 LPH FP w/ 24 lb injectors,BBK equal length shorties,offroad h-pipe,Mac Flowpath Mufflers, Pro 5.0, 3.73's,Motorsport "C" springs,welded subframe connectors, Ponies w/ 225/50 Nittos, 93 Cobra Spoiler Daily driver: 89 Coupe with 205K plus, BBK shorties,offroad h-pipe,2-chamber flowmasters with dumps, cut and welded stock shifter...and it runs like a champ.