460 Ford Forum banner
1 - 4 of 4 Posts

·
Premium Member
Joined
·
9,984 Posts
Discussion Starter · #1 · (Edited)
We did some dyno testing of an 87 octane 545 EFI engine with budget ported F3 heads for a local client.
Power was as expected for 8.9 to 1 static c/r.

Out put was 625 / 465+ hp. 480 HP with the spacer. Throttle response was still sharp.

The premium fuel version is 500 hp and 650 torque.

We purchased 3 industrial EFI intakes and spacers and wanted to test the 4.75" tall adapter from the EFI intake to the propane mixer which is 4150 flange. This particular intake does not have the injector bosses drilled nor the WP bypass.

In the end the spacer is worth about 15 hp but more importantly it stretches out and flattens the HP peak.
The intake as we port it bolted on to the budget ported F3's flows about 260 CFM on a 295 CFM intake port. As we've found the OEM intake is good for about 500 hp.

The spacer is a good addition on the larger engine and with a carb is as tall as the OEM snake and TB.

We are working with Mike the owner of Tweecer to create calibrations for all of our crate engine combinations as well as a stockish engine with Banks kit and adjustable FPR. Adding 5* base timing and bumping fuel pressure works for the 400 / 425 and 450 hp 502" engines but there is definitely something left on the table.

I have an OEM timing table and it is a hot mess compared to a plotted performance curved duraspark load vs. RPM.

We are also quantum fuel system approved to supply their 255 lph and 340 lph drop in pump assemblies.

In the end this spacer would be suited for a combo running a carburetor OR a Holley sniper style system.



Link to build for those interested:

[0]=AZXjPlXtpR7QHONiGHgogkLY8xZQsfMf55gcMqflrKb9fzGQWe9mph1n2d-Jy9s-sD0r_NpKtiFzyNb1kCDJINVFDVw6ax_tI5WwOpaknbgyaGRUqIjzzauCoi3tSpaY-rXYMVy4MQFSdYaeXPzMdQoDfiib6I0U1Ewhgod4zXnx-1QCDhAy9fi3Iq3E4OG7PxA&__tn=-R


Link to dyno video for those interested:





Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine





Motor vehicle Plant Engineering Gas Machine
Motor vehicle Engineering Gas Auto part Machine
Motor vehicle Hood Gas Engineering Technology
 

·
Premium Member
Joined
·
9,984 Posts
Discussion Starter · #3 · (Edited)
That is really interesting! Open hole, just adding plenum volume… makes me wonder if a taller dual plane or even an open plane would do the same.

Given the modest proportions of the OEM intake yes.

I've flowed the ported EFI intake and a performer on the EFI heads and they are with in a few numbers.

An Eddy RPM is better suited to this displacement but requires mods or an adapter from PMS.

That is why I ran the spacer to address plenum volume questions.

On any combo where throttled torque is important a dual plane is best even with an open spacer vs. say a T2.

The HP peak is only 4600 to 4800. Roughly equivalent to a 5,400 rpm peak at 466 inches.





Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
 

·
Registered
Joined
·
25 Posts
Interesting! It’s one thing to assume if X works then Y will be even better, but to comprehend the data and understand exactly why something works with dyno data to confirm it is actual “engine building”.
Very impressed with not just your knowledge but the fact it is all based on sound critical thinking and backed with dyno proof.
 
1 - 4 of 4 Posts
Top