Hi everyone,

I was wondering if anyone has any experience with the 351 cleveland Trickflow efi manifold? Pros and cons? Is it worth the efi change? I want my truck as a daily driver so the thought of an efi swap has been on my mind.

Thanks

Aaron

 

I guess you have to be more specific in regards to what do you consider a daily driver?

That intake has a power band range from 2500-7500rpm. If your building a horse power engine then go for it but if your building a daily street driver and need more bottom end then upper end performance than the engine might not be as responsive off the line etc....

What gears are you running?

You changing camshafts etc...?

Later, Shortbox4x4

 

Paying $800 for just the intake doesn't seem like a good idea considering that you still need fuel rail, 8 injectors, wiring harness, regulator, ECM, and so on. If it were me, I would just get the Fi Tech 400 system and maybe their command center.
https://www.summitracing.com/parts/fif-30003
https://www.summitracing.com/parts/fif-40003
With just a little plumbing, you will be good to go.

 

The ad says it's for Clevors (an SBF with 335 heads) and 351 Clevelands, BUT, a 351C manifold won't just bolt onto a 302 with 335 series heads as far as I know. I don't think the Clevelamd manifold works on a 351W with 335 series heads either.
I wonder if they sell adaptors to fit that lower intake onto the narrower engines.

But I am glad to see that manifold kit. I would've never guessed they'd make EFI manifolds for 335 series engines.

 

Thanks for that lads. At the moment shortbox4x4 i have almost everything ready for the engine build. Crane roller rockers, hypatech pistons (the short compression height ones with the 6 inch 302 rods), mild crow cam plus a few other little odds and ends.... I have a zf 5 speed sitting in the shed waiting to be dropped in. Diff currently has 3.00 gears. I will also get some mild head work done too. My brother is a mechanic so i am only paying for parts luckily. To my shame though he isnt a ford man

Hahaha everything cost a ridiculous amount here in Australia SlikWillie. Alot of the time i can get parts shipped from America and delivered to my doorstep cheaper than i can buy local here. Its terrible! In anycase I will definitely check out the Fi tech 400 system. I am always open to advice and peoples experience. I am not sure if you had the 5.0 AU falcon over there but in Australia its fuel injected and all those parts you mentioned are interchangable to the 351cleveland. They are everywhere at the wreckers so that wouldnt be a problem. Have you used the Fi tech 400 system?

Cheers,

Aaron

 

Hi meangreen92

From what i have read up about them the bolt right on to the 351 C. I think that it is a generalised picture and that they have manifolds to suit each application. Lol hopefully. Otherwise i have no idea how they would do it https://www.trickflow.com/parts/tfs-51611114. Maybe the trickflow site itself gives a bit more info.

 

Ah, Australia. So is your 302 a Cleveland then? We only had SBF 302s. For 335 series we had the 351C, 351M, and 400.
No Falcons sold here since 1971(?). Your AU Falcon was a GT40 5.0 SBF? We got good GT40 5.0 SBFs in the '93-'95 Cobra and '97-'99 Explorer SUVs. We also got a GT40 351W in the '93-'96 F150 Lightning.

 

Nah matey mine is a 351 cleveland. The Au falcon is a 302 windsor efi. I think the AU series 3 had the gt40 heads in them. They are rather sort sfter here

 

I am currently saving up to get a FiTech system. It was a toss up this last summer to either go EFI or paint the truck. I chose paint.

 

351 Cleveland EFI Conversion - Innovation or Insanity - FordMuscle

Here is another idea. Adapt a 5.8L EFI truck manifold.

 

The answer is always: "It depends"...
EFI Pros:
* Handles altitude changes better
* Handles temperature changes better (winter / summer)
* Simpler than carbs (systemically, each component does just one thing)
* Tune with a laptop instead of a kit of springs and bits.

EFI Cons:
* Cost
* Messing around with a laptop and installing and using software.
* None of these kits will sound like multiple venturis sucking air at WOT.

Trickflow Pros over other EFI:
* Nice long 13.3" runners for a torque peak at lower RPM
* Runners are all equal length
* Ability to build a kit to your particular requirements

Trickflow Cons over other EFI:
* Even more cost
* Have to assemble a solution from lots of separate bits.
* More variables to worry about when tuning
* FiTech or Holley will be quicker to setup and get on the road

If reliability is your major concern on a fairly mild engine, I'd just grab an aluminium 4-bbl intake, and slap a FiTech or Holley EFI on top of it. Quick, fairly easy, reliable and lots of support.

A properly setup TrickFlow will be a better performer, but with a lot more messing around. How much better the TrickFlow performs will depend on the final kit you assemble, how good a tuner you are (or find), and what work you've done to the engine. If you size something wrong, or mess up the tune, then the TrickFlow will perform worse than the 4-bbl EFI bolt-ons.

What heads do you have? You mention the 302C rods, is this a stroked 302C with 302C cast-iron heads?

I hope some of the above is helpful.

 

Cheers for that 54hydro i will check it out

 

Cheers F100Rabbit and yes it is helpful. �� its a 351 Cleveland with cast iron heads. An engine builder here said that i cant use what you call the aussie heads as the octane rating in Australian fuel is rather poor and will cause all sorts of trouble. He put me on to hypatec pistons. I believe they have a shorter skirt and work in conjunction with the shorter 302 cleveland rods. He said it will bump up the compression a bit. I will think a bit about the fiTech. I have a new manifold already. The edelbrock airgap so co sidering its rather new it would be a shame to swap it out already.

Cheers again matey

 

Just a bit of info on what I think is weird about that Trick Flow Cleveland intake, I don't see how in the world it could be for a "Clevor" conversion. Cleveland's or Modified motors (both the 335 series) don't have the water running through the intakes. All Windsor based motors do have the water running through the intakes. That "conversion" intake does not have ports for water therefore I don't see how it could work on a Windsor based motor for a "Clevor" conversion. I guess the only exception is heavy modifications being made to the Windsor style cooling system to not run water through the intake.

 

Yes they do...