Dual Sniper EFI + Porsche 914 = Match Made in Heaven

Posted by Chris Myer 08/5/20 0 Comment(s) Customer Rides,

Ever seen a Porsche with a small block Chevy and a Sniper 2x4 setup?
 

Now you can say that you have, thanks to our friend and Awesome Customer, Bob Cole. Below, Bob shares with us the backstory that lead to him putting a 383 SBC, 915 transaxle, and the Sniper 2x4 EFI system in his treasured Porsche 914.

 

As Bob tells it...

 

"In the early 80’s I bought an ex-race ‘68 Camaro RS/SS 396.  It came with a fiberglass tilt front end and 4.56 gears, but no motor or trans.  I built up a big port 427 and installed a Super T10 4sp.  It nipped into the 10’s at the Fremont dragstrip (now a mall).  My roommate at the time was a Porsche mechanic who had a 914 set up for autocross - flares, really sticky tires, and ALL the suspension work.  He was stunned at how fast my Camaro was, and I was shocked by how well his 914 handled.  I wanted both!  An evening with a tape measure showed that an SBC would just fit in a 914.  Then I had to sell my Camaro to pay for Engineering school.

 

"My first job out of college, in the late ’80s, I bought my 914.  I had it up and running with a 350 and good suspension in 1990.  I used a Kennedy adapter plate, flywheel, and clutch.  Everything else was DIY, no kit.

 

"Around 2002 I built up the 383 and 915 transaxle.

 

"I did the flares and 5 lug wheels after I retired in 2015.  The Tunnel Ram, Sniper 2x4 EFI system, and electric power steering were added in 2019."
 

Lake Havasu


"I brought it down to Lake Havasu last winter (‘19/20), and showed it off a bit.  (Havasu is one of the Hot Rod capitals of the world...)  It was fun watching people try to figure out what carbs I'm running!  A custom car painter made me a deal I couldn't refuse, so the car is blue now."

 

    

 

So how well does the 2x4 Sniper on the Tunnel Ram work? 


"In a word - Fantastic! 

 

"Initial start, it fired up on the first hit of the key.  It was pretty well-tuned from Holley, except for a lean area from 2000 to 3000 RPM under deep throttle.  This cleared itself up quickly.  

 

"It pulls nice and clean from 1200 RPM, even in the (very tall) 5th gear, and I can drive around town without ever going over 2000 RPM.  It has the driving manners of my Camry.   From 2200 to 3300 RPM, power really ramps up, and from 3500 to 6000 (red line), it absolutely rips.  It takes full throttle cleanly below 2000 RPM.  

 

"I recently leaned out the idle and cruise Fuel Target to clean up a bit of fuel smell.  I richened up the acceleration enrichment (accelerator pump) and now I can snap full throttle at 2000 RPM without any stumble.

 

"I think EFI on a Tunnel Ram, with a short duration cam and good heads, is a really good setup for street driving."

 

How does it handle? 


"Up in the hills the car barely wakes up at speeds too fast for any sane driving.  It easily catches well-ridden sportbikes on tight and medium roads, (I used to race sportbikes…). 

 

"The steering was a bit heavy below 35 mph and very heavy in parking lots. This was due to the wide tires, lots of caster, small steering wheel, and tight limited slip.  But with the electric power steering, (which tapers off over 35 mph), it steers great."

 

Enjoy this video of Bob ripping it through the desert compliments of his Sniper 2x4!

 

 

Future Plans? 


"I need to get a shift light, as it rips into the rev limiter too fast.  I need to implement the timing control in the Sniper EFI.  I will be upgrading to big Wilwood brakes.  The 915 transaxle strength is marginal (at best), so I’m saving up for a Mendeola SDR5 Transaxle.  These have a big 10” ring gear, and run a modern Corvette clutch."

 

Parts:

  • 383 Chevy
  • AFR Heads
  • 221 Intake, 224 Exh @.050, .560 Lift Roller Cam
  • 1.6/1.52 Roller Rockers
  • Corvette Headers
  • MDS 6AL & Distributor

 

  • Sniper 2x4
  • Edelbrock Street Tunel Ram
  • Camaro Hood Hinges on Trunk to clear Tunnel Ram

 

  • Porsche 915 (911) Transaxle
  • Porsche (ZF) Limited Slip set to 80% (very tight)
  • Velios Side Shifter Kit (re-machined)
  • 911 Short Shifter Kit
  • Sway Away Axles, 930 Inner CV’s, 911 Outer CV’s
  • Kennedy Flywheel, Clutch, Adapter Plate
  • Home Built Mounts, brackets, water pump housing,  Mopar 440 water pump
  • 68 Camaro Radiator

 

  • Koni Shocks
  • Weltmeister Springs & Torsion Bars
  • Poly Graphite Bushings
  • Weltmeister adjustable front Swaybar
  • Turbo Tie Rods
  • Bump Steer Kit
  • BMW Front Calipers

 

  • Bogart Wheels, 17x8.5 and 17x10
  • Bridgestone Potenza RE-71R Tires, 225 Front, 255 Rear
  • High-Performance House Flares
  • Under-Dash Electric Power Steering

 

    

   

 

 

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Rob Willis
Chris has forgotten more about EFI than most EFI technicians will ever know. His insights and guidance are spot on. When you ask him a question you KNOW you're getting the right answer. Today we passed a RIGOROUS emissions test with flying colors and my '79 CJ7 has never in its life ran as smoothly or with as much power as it does now.
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