After 3 years of thinking about it and wanting to do it, I made the decision to let Scott Johnston build me an engine.

I can tell you this: Scott is awesome to deal with! He took well over an hour to discuss details on the first call, and answered the 5,492 emails and texts I had about the whole build. Never once did he fail to be professional and prompt in responding. Scott is a class act who knows what he is doing.

Here are the build details:

9.2 to 1 504" BBF
Scat 9000 4.150" crank
Scat 6.8" H beam rods
Icon 857 28cc step dish pistons
Engine pro performance damper with timing marks to 40 degrees
hastings 1/16" 1/16" / 3/16" performance moly ring package
Clevite P series bearings
Dura bond FP 30 cam bearings
Melling M84D oil pump and new melling rear sump pick up
Melling brass plug kit

219/227 / 114 +4 custom ground cam for SD EFI DCR is 8 to 1.
Johnson Hylift notched lifters
Engine pro billet double roller 9 key timing set with torrington thrust bearing on cam gear.
Cam properly degreed in.

Ported F2 EFI intake

RHP New F3 EFI cylinder heads with Comp springs
Custom length smith brothers pushrod. 5/16" chrome moly .080" wall.

Felpro EFI gasket set which includes the high performance 1018 head gaskets and one piece oil pan gasket.

All engine accessory bolts except head bolts are stainless

Block thermally cleaned and steel shot peened.
Bored to size, deck plate plateau honed, 0 decked. Pistons .005" out.

Oil passage mods from pump flange to oil filter.

Built for pump gas to 89 octane.

Dyno will come week after Christmas, but Scott is projecting 420 HP and 570 TQ. Dyno will be carb, but the combo will be Speed Density EFI in the truck.


My truck is a 1997 on 47 inch Goodyear MVT radial military tires. 5.13 gears, ZF5 tranny, custom HD driveshafts, disc brakes in rear, hydraulic assist steering, the list goes on. While the stock 460 was adequate, I wanted a LOT more power than the factory powerplant.




Here is the redneck way to remove an engine.....




Cleaned up short block coming together.




Crank installed



Cam degreed in properly



I went with a black wrinkle paint on the oil pan and valve covers just to do something a little different.



How it looks on red block




BRAND NEW heads (since old ones had header bolts broken off and cracked ears). Comp springs and ported for higher flow by Scott.




Ferrea valves




Heads on, everything coming together.

 

A valley full of Smith Brothers pushrods




READY FOR DYNO week after Christmas!!!!




Another shot






Compression calculation

 

Nice work Is Scott building it or is he supplying you with the parts etc? Looking forward to seeing how it runs with SD setup, i might have to build something similar!

 

Scotty built the whole thing. I supplied a water pump, injectors and paint. Haha. Injectors are 30# and I have already installed a Holley auxiliary pump behind it to make sure I got plenty of pressure.

 

Looks impressive as hell, how long till you're driving that beast?

 

Dyno will be next week. Week to 10 days to get it shipped to Florida. Hoping to have it installed, running, and most of the tuning done in a weekend.

So I am hoping around 3rd week in January. But I have not driven it since last weekend in August when I pulled engine to send to Scott, so I am DYING to get back in it...

 

Merry Christmas to you!
Damn, that's sweet.


Questions,
Why are you staying with an SD cam? Weren't '97's MAF engines?
What are you using for spark?

Yeah, Scott is great to deal with from all I hear.
No BS because he has nothing to prove.
EngineMasters, etc... speak for themselves

 

MAF was only on California trucks. I can switch to MAF if I decide the SD isnt cutting it. Theres a couple places that sell MAF conversions, or I can find a 460 5 speed like mine and get the VIN and get the parts. But according to Scott, everything should work fine once the fuel pressure and timing are set properly.

For spark I have a full MSD ignition system.

 

I thought they were in New York and Massachusetts as well, due to the stringent emissions requirements.

No one knows better than him if his cam will work, and what it will produce.

You are going to have an ear to ear grin roasting those tires.

 

HAHA! Yep!

 

What kind of headers are you putting on it?

 

I've had Banks headers for several years. They have a 5/8 flange which is the thickest available, plus they are stainless. Have been very happy with them.

 

Scott had truck on dyno today and it pulled 411 HP / 565 TQ. This was with a pair of BBC headers (you can see the custom adapter plates) and with a card adapter that was a little too small and pulling 2 inches of vacuum.

After doing his figuring, he thinks the engine is actually a 425-430 HP / 570-575 TQ combo. Hey Jack, either way I am a happy camper.

The peak HP was almost flat between 4200-4800 RPM, and the TQ peaked at 3200.

Needless to say, lots of power down low to launch and plenty of power to go fast. This engine should be a dynamite combo in my truck. Will ship out in a week or so (meaning I won't be able to sleep a wink in anticipation).

 

The price motorsports carb adapter had 1 5/8" bores for a 600 holley.
I was not aware when I ordered that they come in 1 11/16" and 1 3/4" as well.

The engine was pulling near 2" of vacuum at WOT peak power and using only 602 cfm. I feel that with larger throttle holes the peak HP would have increased 10 to 18 HP.

87 octane regular fuel was used for all tests.


The BBC headers were largish at 2 1/8"

A GREAT BIG THANK YOU to Charlie Evans for his help in getting a rough adapter for the exhaust made. I hand shaped each port. The finished adapter will go back to Charlie to be digitized and made available for sale.

This makes testing our EFI crate engines much easier as our program ramps up.


NOTE* Relative humidity was 100%


https://www.facebook.com/SMJRHP

Dyno Vid on FB page.



S

 

Have you got the motor back yet or in the process of installing? Are you going to run efi or the carb on this truck?