At 01:39 PM 6/10/06 -0400, Peg wrote:
>> My kid just bought a Scion that makes 160 hp on a 4 cyl motor and goes
>> like stink. Technology has come a long way, and displacement isn't king
>> any more.
>>
>>> Granted, it took them using SEFI to do it, but it shows it can be done.
>
>Yeah, while I've always loved the phrase "There's no replacement for
>displacement," it's hard to defend when you're eating dust most of the
>time.
>
>Should I even consider EFI?
Only if you *want* to. If you're looking to make power in a hurry, I'd go
with the 403. If you're looking to drop in an engine *tomorrow*, well,
there's your 307.
However, with either one of those, you could convert over to EFI. Since
these engines didn't ever come with EFI (exception: Olds 350 in Seville
with the analog EFI system), it's going to be notably a home-brew system.
I imagine that whatever effort it takes to covert a 307 to EFI would pretty
much be exactly the effort to do it on a 403.
But I look at EFI on a car that never came with it as an option only when
I'm in one of those "Yeah, I think it'd be really cool if I could do that"
sort of thing.
Digressing from that question a bit, I can't remember if your 307 was a
roller or not. If it is, I could've sworn I read somewhere that the tiny
intake runners of a 260's intake will match (or nearly so) a roller-307's
intake ports. Don't remember where I read that or how accurate it is.
Also, does anyone know, given how restrictive the heads are on a
roller-307, does it ever use the secondaries? Would it suffer any loss at
all if stuck with a 260's carb and intake? Just sort of wondering...
- Joe Vahabzadeh
