So, Over the years of looking through performance catalogs and online stuff, I have come to notice something. Most (if not all) Big Block Engines come carburated rather than being Fuel Injected. Is there a reason for this? I just don't get why big blocks cant/arent fuel injected? :dunno2: or if there is a FI Big Block, why they seem to be so hard to find? (and no im not looking to GET one i just was wondering) :hmm:
Most big blocks were obsolete before fuel injection became the norm. I did a 605 hemi with a FAST system a few yrs ago. Sweet deal after all the tuning tables are sorted out.
due to not needing an onboard computer to handle everything? I guess its easier too no? So i guess i am still wondering why you wouldnt/couldnt have a FI Big block? I know displacement isnt the ONLY thing that makes power but it would seem to me that if you had lots and lots of it....it would help make some serious power no?
The only real difference, and this is back in the old days, between a big block and a small block is the cast the manufacturers used to actually make the block. They typically had 2, small and big. It really doesn't mean much b/c there are small block engines that have more cubic inches than some big block engines. The biggest difference is weight.
you have a point there...maybe i should rephrase my question as my terminology is wrong.... instead of "Big Block" maybe i should have simply said "Large Displacement"... So same question....only Sub in "Larger Displacement" for "Big Block"
Well, there is the old saying: "There is no replacement for displacement." Not sure that I necessarily agree with that. My guess would be efficiency. There really aren't that many Large displacement (from the Manufacturer) engines that come stock in cars nowadays. As we all know, there are a few, but not like it was back in the '60s and '70s. Most people using larger displacement now are strictly quarter mile cars. From what I know - some from experience, some from the Speed channel - FI cars are typically more efficient. I have seen shows on TV where they would take one engine with FI, dyno it, then switch over to a Carb and dyno it again. The Carb engines always made more power over FI, with everything else being equal of course. Plus tuning with a Carb has to be a helluva lot easier than FI.
arent Carb'ed engines a PITA to keep running correctly (keep in mind my age)...i have never driven a non FI car hahahaha
Carburated cars do take more maintenance and would be more of a PITA in getting them to pass emissions regulations regularly when compared to computer driven FI vehicles. No real reason for Big blocks anymore (for the street) when you can get big power going to a more efficient FI system. I suspect with the fuel pricing crisis, we'll be seeing a lot more turbocharged cars with smallish displacement.
We at B&G Have done a Big Block 1970 440 fuel injection set up using a Jtec PCM Modified Intake with Ford 24 Ib injectors and a MP 4BBL throttle body.. It worked great..FYI
So finish this statement hahaha The reason you don't see any 502 chevys, 514 fords or 605 hemi's with Fuel Injection is....
I think it's mostly a generation thing. My Dad for one,,, has no interest in fuel injection. He's a carb guy. I grew up with both. Most older cars are emission exempt and are driven very seldom. Less then 10 mpg are common with a hopped up 500+ ci engine. What makes more power??? I think you can make more power with fuel injection, or the control you get from it. Vs a standard setup. The 605 I mentioned for example. On the dyno (first session) we ran it with a 1200 cfm dom. It made 805hp 796tq. I went back a week latter with the FAST setup and in 10 pulls it made 801hp 792tq. Ok not bad for a morning session. Latter on the chassis dyno I found 25whp peak improvement. I'm in the process of seting up a 572 ci hemi FAST setup for a pro touring car. I don't think he understands how much power that is on the street. LOL
