What jet size for a 350 holley on 250 - Ford General Discussion & Technical Talk

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Fastlane » Ford Forums » Ford General Discussion & Technical Talk » What jet size for a 350 holley on 250

What jet size for a 350 holley on 250

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Guest		#1 Posted : Wednesday, 1 December 2004 6:50:08 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		Hi, can anyone tell me what jet size to use in a 350 holley on a XE 250 X-flow. Standard besides extractors, running on premium???? Also my engine is an EFI engine with a carby manifold. Is there any advantage over a carby engine in doing this. I.E. higher comp, bigger ports/valves, fuel pump?? THANKS

Guest		#2 Posted : Wednesday, 1 December 2004 10:02:53 PM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		Hi the compression ratio standard 4.1 = 9.35:1 4.1 EFI = 8.8:1 3.3 MC = 8.35:1 3.3 HC = 9.35:1 thats the specs of the XE six cylinder range

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Fastlane » Ford Forums » Ford General Discussion & Technical Talk » What jet size for a 350 holley on 250

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