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The knock off in my case is better quality than the Edebrock one. Both use the same dumb Ford 4 bolt throttle body flange pattern Edelbrock stupidly uses rather than a GM 4-bolt LS pattern. Edelbrock screwed up on the Proflow manifolds on both the LS and SBC stuff using that stupid bolt pattern rather than the LS 4-bolt. The manifold would be a lot more commonly used if it had a LS 4-bolt flange for a 92mm TB rather than the Ford 4-bolt 90.
The knock off in my case is better quality than the Edebrock one. Both use the same dumb Ford 4 bolt throttle body flange pattern Edelbrock stupidly uses rather than a GM 4-bolt LS pattern. Edelbrock screwed up on the Proflow manifolds on both the LS and SBC stuff using that stupid bolt pattern rather than the LS 4-bolt. The manifold would be a lot more commonly used if it had a LS 4-bolt flange for a 92mm TB rather than the Ford 4-bolt 90.
Is it a big deal to drill and tap the LS pattern? The bolt holes are not anywhere near where they are on the ford, they are closer inboard so I would think they wouldn't interfere.
I wouldn't think it'd matter too much which TB you'd use? The Ford one...the LS one...they're both ugly but functional.
My only ford is old, but the throttle body doesn't have an IAC. There is a fast idle valve that mounts directly to the intake manifold. Do newer ford throttle bodies (such as the one that works with this intake) have an IAC?
I felt like Ford went from fast idle valve to drive by wire and skipped IAC.
I recall '80's V8 having a spacer plate between the TB and the plenum flanges...that spacer plate had the mounting and port/channels for the IAC device.
I recall '80's V8 having a spacer plate between the TB and the plenum flanges...that spacer plate had the mounting and port/channels for the IAC device.
Hmm. I'm not that familiar with most Ford applications, my sister has a danger ranger and I know that it doesn't have that because I recently had to take the throttle body off to change the coolant temperature sensor. I honestly forget how the mustangs are set up it's been years since I've touched one.
The irony though is a lot of cheap ECUs like the micro squirt don'
t have iac drivers but do have an idle valve output.
this is the way the throttles are on the pro flo. It looks like a weird ls/ford hybrid. I've been really happy w it but IDK what I could replace it with if necessary.
my holley elbow is drilled for both patterns i believe.... might be enough material there to drill the other pattern on it?
I do not think so. The bolt holes overlap. My approach was to grind the throttle body mounting holes on the TB itself oval and use washers. Then I ground out some material to make the TB hole 92mm and aligned with the 92mm TB.
I do not think so. The bolt holes overlap. My approach was to grind the throttle body mounting holes on the TB itself oval and use washers. Then I ground out some material to make the TB hole 92mm and aligned with the 92mm TB.
Is the bore centered ?
This is the adapter, and they seem to be far enough apart:
Are there any dyno or flow bench results or feedback on use of these manifolds? Do they flow as well as XT? Was thinking of getting on but don’t want to end up with a paper weight. 🤣🤣
Are there any dyno or flow bench results or feedback on use of these manifolds? Do they flow as well as XT? Was thinking of getting on but don’t want to end up with a paper weight. 🤣🤣
All of these manifolds should be sized to whatever heads you are running.
