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Old 06-24-2010, 06:04 PM
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turbo rat rod. need advice! carb 289 vs 5.0 efi

as the title suggests, I am building a rat rod with twin t3/t4 turbos. I have the option of running either a carb 289 from a first gen mustang, or a 5.0 efi from a late 80's/ early 90's cougar with either form of fuel managmentfor both. the trans will either be the 4spd auto from the cougar with the efi, or a c4 for the carb. i was considering a draw through set up for the carb (limited budget for blow through). I like the idea of efi, but I'm biased and need a second opinion, or two.

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Old 06-24-2010, 08:09 PM
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Why EFI on a 5.0? They, IMHO, very aren't nice to look at!! You open yourself up for lots of extra work and "claptrap" from finding a place for a computer module, a high pressure electric fuel pump, a return fuel line, O2 sensors and much extra wiring to name a few odds and ends. The way I define a 'rat rod' is simplicity. If you have a 5.0 EFI it's very easy to convert to carb and C4 tho one from a 289 wont work unless you change the bell housing and use the correct 50 in oz flex plate for the balance. My AVATAR car has a crate 5.0 (manufactured in 1999) with a carb, mechanical fuel pump and a C4. The unused OEM EFI stuff was easily sold, with a Performer RPM intake and carb, an MSD ignition and a new front timing cover to handle the Carter race fuel pump as well as a Stewart NASCAR water pump.

A 289 - why? There are too many 302/5.0 engines and there are way more after market parts available (tho a 289 can be a screamer)

Dave W
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