Author Topic: 397ci Tunnel Port Dyno Mule Build  (Read 6827 times)

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KMcCullah

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #15 on: July 08, 2022, 01:42:06 PM »
This is gonna be a neat FE. I don't see where the coaches "talk" is necessary.  ;D  But ya, I'm sick to death of the long lead times too. The intake looks amazing after vapor blasting btw.

What kind of rocker gear are you pondering, Brent?
Kevin McCullah


MeanGene

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #16 on: July 08, 2022, 01:56:10 PM »
Here's the old style "396" pistons, trim to fit the chambers


frnkeore

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #17 on: July 08, 2022, 02:48:21 PM »
Here's the old style "396" pistons, trim to fit the chambers
That looks like it would be more at home, in a MEL chamber.
Frank

70tp

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #18 on: July 08, 2022, 06:56:24 PM »
I can’t give enough thumbs up for this build.  Thanks Brent.   

StarlinerRon

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #19 on: July 08, 2022, 08:25:23 PM »
How does one vapor blast?

Chrisss31

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #20 on: July 08, 2022, 08:38:05 PM »
The process uses high pressure water and abrasive media instead of compressed air and media.  It's has a lot of benefits, primarily no dust.

blykins

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #21 on: July 09, 2022, 06:31:08 AM »
I could probably be talked into a 361 crank, but that's a big chunk of change in machine work to make one fit and they are much heavier than a cast crank.  I think a properly prepped cast crank will do just fine for the horsepower that it will make.

Kevin, I'll be using some custom steel T&D stuff with some special prep to the cylinder heads.
Brent Lykins
Lykins Motorsports
Custom FE Street, Drag Race, Road Race, and Pulling Truck Engines
Custom Roller & Flat Tappet Camshafts
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fryedaddy

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #22 on: July 09, 2022, 01:07:44 PM »
thank you Brent for sticking your neck out and experimenting with this FE stuff.it takes someone with a big set to do these experimental engines openly in front of a big audience.i dont see how you get anything done hauling that big set around all day in a wheelbarrow.
1966 comet caliente 428 4 speed owned since 1983                                                 1973 f250 ranger xlt 360 4 speed papaw bought new

4twennyAint

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #23 on: July 10, 2022, 08:08:14 AM »
Brent - sorry if I missed it - what will you do on the 352 crankshaft journal sizes? 
1969 Torino Cobra, SCJ 4.30, 4spd under restoration
1964 Fairlane, 428, 4spd, 4.10, 11.63@119 race trim
1966 Fairlane GTA, 482, C6, 3.50, 11.66@117 street trim

Ghoughton

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #24 on: July 10, 2022, 08:36:24 AM »
I love this build. My first 427 was a Tunnel Port at age 18. I sand dragged it in a ‘70 F250 4x4.
It taught a lot of 460’s and BBC’s a lesson. Came on like a two stroke lol. Tunnel Ports will always be the coolest. Can’t wait to see how the build progresses

blykins

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #25 on: July 10, 2022, 11:59:31 AM »
Brent - sorry if I missed it - what will you do on the 352 crankshaft journal sizes?

They will stay stock dimension.
Brent Lykins
Lykins Motorsports
Custom FE Street, Drag Race, Road Race, and Pulling Truck Engines
Custom Roller & Flat Tappet Camshafts
www.lykinsmotorsports.com
brent@lykinsmotorsports.com
www.customfordcams.com
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6667fan

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #26 on: July 11, 2022, 07:12:28 AM »
Brent, what’s the pedigree on the service block? P block?

Cool build
JB


67 Fairlane 500
482 cid 636/619.
Tunnel Wedge, Survival EMC CNC heads, Lykins Custom Hydraulic Roller, Ram adjustable clutch, Jerico 4-spd, Strange third member with Detroit Locker, 35 spline axles, 4.86
10.68@125.71 1.56 60’

mbrunson427

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #27 on: July 11, 2022, 09:17:50 AM »
We have a 2x4 intake sitting on the bench waiting to be tested. It has 3D printed air foils that go around the tubes. Intake was ported to make up for the cross sectional area that was lost because of the air foils. I'm interested to see how much, if any, benefit there is. The idea is fairly "out there", but you never know if you never try.

Here's the only picture I can find of it. This is the initial rough-in of the foils, it's much more refined than this now. And no, we didn't chop up a perfectly good TP intake, this one was rough.


Mike Brunson
BrunsonPerformance.com

cammerfe

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #28 on: July 11, 2022, 10:12:40 PM »
My first involvement with the TP approach to FE engines was on a then almost new '67 Mustang. I won't go again through the entire story, but I managed to promote a 'back-door' deal to acquire an entire upper end that had been used in the LeMans project. I got the heads, the dual-plane dual quad manifold, and a pair of 652 centersquirters. The engine, including a parts-counter short block, was backed by a C6 we put together with help from contacts at T&C Livonia where both Brother Lon and I worked at the time.

The major purpose for the car was not only daily transportation, but the street wars taking place on Telegraph and Gratiot, and also the various expressways of Metro Detroit.

Later on the engine swallowed a valve and damaged both heads, a couple of pistons, and the block. We replaced it with a medium riser and it became more of a cruiser for a number of years.

We ultimately decided to return to the TP approach and had Jim Dove build a set of heads for us. During the discussion on details of design, I availed myself of contacts at EEE and got up to date, primarily from Mose Nowland, on all the engineering that FoMoCo had done on the TP and I specifically asked for input as to anything that had been found to generate additional flow in the area around the tubes in the intake runners. I was told, unequivocally, that there had been no worthwhile advances.

I'm, therefore, very interested in seeing the results you discover.

KS
« Last Edit: July 12, 2022, 10:23:28 PM by cammerfe »

blykins

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Re: 397ci Tunnel Port Dyno Mule Build
« Reply #29 on: July 12, 2022, 04:42:49 AM »
On aftermarket builds, I've had a lot of good luck out of 465ci combinations (4.310"/3.980").  It's one of those bore/stroke combos that seems to really perform well, kind of like the 4.125-4.150"/4" combo in SBF's. 

I've done quite a few of those 465ci combos, using both ported TP heads and TFS heads and the ported TP heads always make more horsepower given similar carburetor, compression, and camshaft specs.  These combos that I'm speaking of make about 670 hp with a 340cfm TFS head and about 700 hp with a 370-375cfm TP head.   Do I think the tubes in the intake hinder things?  Yeah.  Do I think that it's a major hurdle?  Nah...  The major hurdle is making the pushrods fit in the tubes with aftermarket valvetrain. 

With all of that being said, making more comparisons, I've had 500ci FE's with "Stage 3" Edelbrocks make about the same horsepower as the 465ci Tunnel Port engines. 
Brent Lykins
Lykins Motorsports
Custom FE Street, Drag Race, Road Race, and Pulling Truck Engines
Custom Roller & Flat Tappet Camshafts
www.lykinsmotorsports.com
brent@lykinsmotorsports.com
www.customfordcams.com
502-759-1431
Instagram:  brentlykinsmotorsports
YouTube:  Lykins Motorsports