Nabil Guffey - Karl Ellwein
1995 Caprice Road Racing/Drag Racing Project Car sponsored by: PCMforLESS  

PERFORMANCE HISTORY
7-01-05:  The car ran 12.14 @ 113.xx at MIR all natural with Thumper383
7-3-05:  Car runs 11.4x @122mph at MIR with 150hp jets nitrous
7-3-05: Then we pulled Thumper due to noise from flexplate.
Nab puts in his 350LT1 with stock heads and 845 cam.
7-12-05: Nab runs the GreyGhost at ISSCA Nats in Super Pro.
7-14-05: Karl runs it at the big NASCAR track
8-7-05: Thumper 383 returns after fresh bearing/ring/hone
Goes 11.90 @ 114.62 all natural at Island Dragway
8-09-05:  Thumper get's pulled after tuning mistake breaks 4 pistons
8-14-05: Changed engine to Samakow LT4 heads and Crane solid roller cam
ERE-383 forged bottom, 4400 stall, 4.10 gears and ATI TreeMaster MRT torque converter.

Ran 11.37 @ 120.56mph all motor with full exhaust 9-9-05
11.18 @ 121.37mph 9-30-05 with great weather
10.301 @ 132.39 10-30-05 with 150hp nitrous plate


Tim Rummell Photo:  July 14th, 2005, Pocono PA


The Mass State Trooper body gets sandblasted, primed and painted underside. 


Nab did all the body deconstruction.


Nab also did all the interior gutting.


Check out this right rear door.


We ran this rear at POCONO: DTS assembled with Eaton Posi, 3.73 gears, Moser axles, ARP cap studs.  Josh Korsower's original rear from BBHP#1 is now in the car, (4.10's and a worn out posi).


This frame came from a Virginia cop car.


After painting frame and body underside we were ready to lower the body.


And we took time to pose.


Nab sorted out and arranged the body bushings


Just another view.


Finally a car.


Accept here is an empty spot.


And my 383 stroker with street solid roller cam and Samakow LT4 heads.


I spent quite a bit of time making sure all was perfect with this flexplate, converter, tranny set up.  Easy to find and fix problems right here.


Nabil owns the tranny.  It's a TH400 reverse manual valve body built by IHRA World Champion Eddie Bolton of TranZaction.  The converter is a mild ATI 10"


Got it all sorted out and verified proper fit.


I wish it was this easy with my car.


Almost on the motor mounts.


Oil pan clearance is good.


Stock crossmember.  Drilled a new hole right between the 2 existing factory holes for this tranny mount. Measured for drive shift and it should be 50.5" U-joint to U-joint.


5-27-05:  More dash parts hit the dumpster.  Nab puts on a non airbag steering wheel. 


Front clip is on.  Paint will be stripped soon.


Nothing extra.  Just the bare essentials.


The engine bay is pretty sparce.


May 28th.  New LT4 Starter arrived.  I want to turn the key and start her up.  1st I had to repair-patch a fuel line, run the battery and ground cables, and install the tranny and engine oil coolers.  It's ready.


She cranked and started 1st try.  Bummer though.  There is a clanking noise.  I bet its a connecting rod bumping the cam.  I wondered about cam-rod clearance when the machine shop re-arranged my connecting rods, (numbered them different than how I've had them for years).  Now some had the shoulders ground for cam clearance and some didn't.  Now the rods are in different locations so maybe that's it?  We'll see soon.  I'm planning to pull the motor soon.  No biggie.


So the next day is sunny and 70F.  Perfect day to work outside on the project. 


Pulled the engine and need to bolt the work stand behind it.  I'm going to take the heads off and check the bottom end to see if I can find the reason for the clanking sound.


I ripped her apart and spent at least 2 hours looking.  I pulled rod-piston combos that looked like they might have interference with the cam or the crank. (none actually were hitting and no marks were found).  I even ground a bit for extra clearance and cleaned and re-installed.  The sound was still there when I turned the engine by hand.  I finally got to #4 rod-piston and all the sounds went away.  The rod bearing top shell was not installed.

Thankfully the engine was not damaged from running without that top rod bearing.  I re-installed the engine and we ran 11.90 at Island Dragway with the tight torque converter and 3.73 gears, that is until I made a tuning mistake and broke 6 of 8 pistons.  I put too much timing in it and rattled the engine to death.  Further down the page you'll see that I took the LT4 heads and Crane cam from Thumper and installed them on my new splayed cap 383 bottom end.
     


Because the car has be gutted we wanted to stiffen it up and make her safe.  Bryan Herter at PCMforLESS sponsored our strong and safe 10 point roll cage from Alston Chassisworks. Notice the lower bar called a "rocker bar". Notice the dash bar called a "dash bar" duh. 


Here we can see the 2 small struts at each side of the main hoop going inward to the body floor and the extra "X" struts that go to the rear frame crossmemeber and one of the long struts that goes to the trunk. 


Here you can see the "window bar" and most of the "dash bar" 


Nab wouldn't take a break for 2 days.  He's doing all the cutting, grinding, sanding, scraping, hammering, filling and painting. 


Even the roll cage has a little bit of paint-primer. 


Afterburner Headers on Thumper. 


Team Guff-Wein at the NASCAR garage. 


Is this 4-wide at Talladega? 


1st in line.  Waiting to attack that nasty turn 1 at POCONO. 


This is the splayed cap all forged ERE383 that came out of my car, "The Heavy Eliminator".  The Thumper 383 broke 6 pistons due to my tuning mistake, (too much timing).  The heads and cam from Thumper will go on this forged bottom end. 


The bottom end is inspected and it actually looks better than new.   


And why not add a Titan gerotor oil pump?  This thing is high volume and will not cavitate. 


Guff-Wein drivers area as of Sept 11th 2005.  We have tach-o, water temp, shift light, oil press.  The Cheetah shifter is the best on earth. 


I'm calling this engine Thumper+
It's a forged bottom 383 with splayed caps and same ol Samakow LT4 heads with Crane street solid roller cam. 


The interior again. 


9-22-05:  We've gone 11.32 @ 120 all natural and are working to remove all tuning bugs prior to activating nitrous.  Interim work: make fuel enrichment system 100% IHRA/NHRA/FIA legal.  Tell me what's not legal in this photo. 


How about here? What do you see that is installed against the general safety rules of IHRA/NHRA/FIA? 


Fuel systems: ...No part of fuel system may be mounted on the firewall or outside frame rails, (except on steel bodied cars, fuel press. reg. may be mounted on inner fenderwell only and at least 6" forward of the firewall).  ....rubber hose is limited to 12" max. (lines must be IHRA/NHRA/FIA accepted). 


So I spent $100+ on aeroquip fittings and steel braded line and moved the fuel tank to inside the frame rails just behind the bumper and on the radiator core support. 


I put the regulator on the intake and far away from the flexplate area. 


And the fuel lines run on the frame and are well protected from hazards such as shredding belts or God forbid kissing the wall. 


©www.Karl-Ellwein.org 2005, ©The Heavy Eliminator 2005, ©ECIRS 2005, email Karl Ellwein