347 SBF-BOOST vs BOLT ONS vs BOTH

FULL DYNO RESULTS. MILD 347, THEN BOOST, THEN MOD, THEN BOOST. WHAT HAPPENS WHEN YOU ADD BOOST TO A MILD 347 STROKER EQUIPPED WITH STOCK 5.0L HEADS AND CAM AND GT-40 INTAKE? THEN WHAT HAPPENS WHEN YOU UPGRADE THE HEADS, CAM AND INTAKE? THEN WHAT HAPPENS WHEN YOU ADD BOOST AGAIN TO THE MODIFIED MOTOR?

[robertwest]

I've always wondered what a 347 with stock heads and cam would do. Keep the Windsor stuff coming!

[aaronliddell]

Thank you for remembering us ‘old skool’ sbf guys Dr Holdener. 👍

[RandomLifeTimothy]

Am I the only one that can’t read the power numbers on the left?

It’s been the last few videos.

[slvrz]

Richard, on the last couple of videos I can't see the y axis on the dyno chart.

[Dr_Xyzt]

That addition of heads, cam, and intake was wicked. Totally transformative. Holy crap.

[matthewstillings]

340 am can't sleep just watched the mishaps with the 292 points and saw a few other videos and now I'm watching this Richard you are awesome

[SARJENT.]

I'd like to see a stock 2v Cleveland with a turbo(s). Then the usual heads, cam, intake, etc. Thanks for another kule vid.

[jaydub]

I’d like to see that same test with a 331 stroker SBF and compare it to the 347.

[vernondavis]

Great vid!!! This was pretty much the progress of my current combo, minus the stock block and lack of meth..

[HoosierDaddy_]

Still waiting on the early model 429 Ford you showed a couple of weeks ago. Lovin' all the testing!

[rchoper]

Sounds like my motor. CHP stroker kit, eagle5.4 rods, CHP LW140 pistons, offset ground 3.4 Cleveland, first gen ported twist wedge, custom Isky. 550 226/230 duration 114 lobe smog cam, vortec V 1 s trim meant to pass cali smog. Hoping for 600 hp.

[waynereid]

I think a similar test with a 393 or a 408 would be awesome

[philballphotography]

3:22 looks like a mouse chewed on your impeller blades! I hope your test wasnt done with that busted unit?

[modmotorheadful]

Can’t wait for the junkyard 351w again love the videos 💪💪💪

[russellhess]

Can you do a junk yard (or aftermarket) 351w 427 stroker or a 408 stroker? With the same mods ie boost / cam /heads

[Boostedjasper]

Hell yeah man, stroker sbf+booost+dyno #’s Thanks for the tests richard! 👊

[shanemacnally]

Thanks guys, great comparison between the two. This will help me with my 347ci build.

[matthewdupuis]

Hey Richard!

So back in the day I built my first (and so far only) V8 for myself. It was a 306, Eagle rods, KB pistons, your favourite cam (TFS stage 2 224/232), Powerheads CNC ported E7TE heads, an Explorer intake, and long tubes flowing through a 2.5" Magnaflow exhaust. I never really developed it beyond the initial stage, it made 252/280 at the wheels, and since then I've wondered if I'd made a couple wrong choices that limited me.

The TB was a 60mm and "I read" that a larger TB would only be worth a couple. The headers were 1.5" as I wanted to keep a bunch of torque, but maybe larger wouldn't have hurt. I also wondered how those heads were doing, if they were really capable of more or if I would have been better with some Edelbrocks (let alone the AFR 165).

At the same time my buddy built his own 306 with the same cam but with bigger everything - ported Edelbrock heads, 1.625 LTs, a single plane and a 650 - and he made the same power as me but way less torque (no kidding) on the same dyno day. That made me think I was on the right track with mine...

Whadda ya think?

[frankx]

"We weren't spinning it fast" Shows a vortech with 2 cracked impeller blades...that was funny.
In the end, so a 347 has power adder potential of 700+HP. when done right. In such a simple and light package.

[jeffschwartz]

Have you, or have you ever thought to teach Mechanics in College ? I think you would be a great instructor, (because you're not boring) like other instructors. And I love the Ford stuff !