Technical > Spud Miller's Cave

New to MFI

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jlesliel:
Hi Spud and thanks again for all your input. When I bought the car it came with a box of stuff AN fittings, leakdown tester, odds and ends. At the bottom was a spare chute, didn't go any further. Finally took the chute out and found the pump tag underneath it reads 2.82 gm @1800rpm. Now I have a little something to go on.

George:
We ran a Hilborn stack injected ,methanol, 355 CID SBC in a FED for a few years. Almost all 1/8 mile. I wouldn't be concerned with a high speed by-pass until you are happy with every other aspect of tuning. We ran a best of 5.07 @138 . Combo weight was #1460.

jlesliel:
Cool! nice pass. I'm not really concerned about high speed bypass just wasn't sure about my findings on the gage. thank you also for your input.

dreracecar:
Would you even get into the HS on an 1/8m pass that it would make any difference?

jlesliel:
I've been waiting for others input but I'll reply. I see no need for a high speed for instance, in my car it's geared 4.30 so i'm crossing the 1/8 @130 so rpm is low, It's still torquing it's way down the track. IMO

I do have another question though. I always raced @ 3600 elevation unless I went to Dallas or OKC. Home tracks gave me a density altitude of say 7000 ft. in the heat. Here in dallas area DA is say 3700 ft. I was carbureted on gas and had to jet up when going to those tracks. With that being said, now that I have pump flow numbers and can use the FIE calculator, there is no input for density altitude. I know I'm old school so I'm asking, is DA no longer a factor?

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