AbandonedBronco
Famous Member
Hi all,
I'm looking for ideas on how to convert my 300 to fuel injection.
The year before last, I built up a 300 and dropped it into my '81 Bronco. It currently has an Offenhauser intake with a 450cfm QuickFuel and EFI exhaust manifolds. Then, late last year, my '81 was rear ended and "totaled". I'm still driving it, but it'll never be what it once was. So, I purchased a nice '85 Eddie Bauer Bronco with a fuel injected 302 in it. I plan on dropping the 300 into the '85 and fuel injecting it.
Some quick overview specs of the engine:
19cc 351w pistons
Deck shaved to 0.005" in the hole
9.1:1 compression
Larger S.I. valves with a professionally P&P head to match. (Bench flow measured a 15% increase in CFM)
Erson 270321 Camshaft
- Lift: 0.504"
- Lobe Separation: 110°
- Int/Exh Duration: 284°
- Int/Exh Dur. @ 50: 220°
Plus some other goodies like roller rockers, screw in rocker studs, etc.
Either way, as far as I know, it's modified way too far beyond stock to use the stock EFI system.
My initial idea was to simply get one of the self learning TBI setups and bolt it on. However, I've been toying with the idea of MPFI and a controller of some sort (I'm assuming MegaSquirt).
I haven't done much with fuel injection, so I don't have ANY experience with setting it up. But, I've been working on engines for a good 10 years, and have been programming computers for almost twice as long and am a software engineer by trade, so I don't think I'll have too many issues with things.
Any advice on which route to go? What the pros and cons of each are? The price of the TBI units have come down so much that it almost seems like those would be considerably less expensive. But, I'm liking the idea of the MPFI the more I think about it.
This is a daily driver 365 days of the year and I take it out camping in the middle of nowhere, so reliability is a big concern. And getting the most out of my built engine would be fun too.
Thoughts?
I'm looking for ideas on how to convert my 300 to fuel injection.
The year before last, I built up a 300 and dropped it into my '81 Bronco. It currently has an Offenhauser intake with a 450cfm QuickFuel and EFI exhaust manifolds. Then, late last year, my '81 was rear ended and "totaled". I'm still driving it, but it'll never be what it once was. So, I purchased a nice '85 Eddie Bauer Bronco with a fuel injected 302 in it. I plan on dropping the 300 into the '85 and fuel injecting it.
Some quick overview specs of the engine:
19cc 351w pistons
Deck shaved to 0.005" in the hole
9.1:1 compression
Larger S.I. valves with a professionally P&P head to match. (Bench flow measured a 15% increase in CFM)
Erson 270321 Camshaft
- Lift: 0.504"
- Lobe Separation: 110°
- Int/Exh Duration: 284°
- Int/Exh Dur. @ 50: 220°
Plus some other goodies like roller rockers, screw in rocker studs, etc.
Either way, as far as I know, it's modified way too far beyond stock to use the stock EFI system.
My initial idea was to simply get one of the self learning TBI setups and bolt it on. However, I've been toying with the idea of MPFI and a controller of some sort (I'm assuming MegaSquirt).
I haven't done much with fuel injection, so I don't have ANY experience with setting it up. But, I've been working on engines for a good 10 years, and have been programming computers for almost twice as long and am a software engineer by trade, so I don't think I'll have too many issues with things.
Any advice on which route to go? What the pros and cons of each are? The price of the TBI units have come down so much that it almost seems like those would be considerably less expensive. But, I'm liking the idea of the MPFI the more I think about it.
This is a daily driver 365 days of the year and I take it out camping in the middle of nowhere, so reliability is a big concern. And getting the most out of my built engine would be fun too.
Thoughts?