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Archive for the ‘test results’ Category

Rick’s Sleeper 512 Mopar

Wednesday, December 25th, 2019

Long time customer and friend Rick, wanted something special for his Super Stock clone street car. This has been a great build, and has been the prototype builds for several customers since. The goal was a easily street driven pump gas combo with tire shredding power at any RPM. The 440 Block was bored to 4.375 bore, which is home to the custom Autotec pistons. Molnar 6.800 4340 H beam rods tie the slugs to the Molnar 4.250 Crank. Total Seal AP Steel rings seal the deal. The cylinder heads are CNC ported 440 Source units, with 2.140/1.81 valves, and Max wedge openings. This same CNC port is the one used in our 440 aluminum heads, as well as the Edelbrock RPM heads, so this performance is available to anyone with any of these style heads. The hardware in the heads is all matched to the custom hydraulic roller camshaft. Pac Springs, locks and retainers work great to keep control of the valves as the RPMs rise. The camshaft is only 243 @ .050 on the intake side, so this combo is pretty docile until the loud pedal is smashed. One particularly cool aspect of this build, is the dual plane Indy intake manifold with the Holley 950 Carb. The manifold is an absolutely huge dual plane that kind of looks like the old CH4B Edelbrock on steroids. Match this with a Max Wedge port window, and there is power available everywhere, as well as a subtle look. Rick’s is devoid of any logos, and is painted engine color for even further sneakiness. As far as power goes, this sneaky big block Made 682HP and 688lb/ft of torque on 91octane pump gas. According to Rick, the car is an absolute riot with it’s A833 4spd, Ram dual disk clutch and 3.73 gears.

Tony’s 512 Low Deck Engine on E85

Wednesday, December 9th, 2015

Tony’s 512 Wedge On the Dyno

Update on E85 powered 455 Buick with Ported Edelbrock heads

Monday, May 24th, 2010

We managed to get Brian’s 72 Buick GS to Norwalk for the Annual Buick Raceday and get some passes on it. On the dyno, it made 703 HP, full results here. We had a great first outing running three passes in the 10.60’s right out of the box. The engine has been dyno’d, but we hadn’t made any passes in the car, so we weren’t quite sure what to expect. We had some charging issues which plays hell with the MSD ignition boxes, and a big hesitation on launch, so overall we were very pleased with our first outing. I’m sure with some attention to detail, and getting issues straightened out, the car will run even better.

Overall, the Norwalk Buick Raceday is a great event, and it was nice to be able to put faces with all of the names of the Buick guys I have spoken to over the years. Roberta, Bill and crew do a great job putting this event on. If you have an opportunity, you should check it out. More info here: Buick Raceday: Facebook Page

Dyno Test: 464 CID Buick with Edelbrock heads on E85

Sunday, October 18th, 2009

The purpose behind this engine was to build a max effort street strip Buick 455 combo, using the new Edelbrock heads. The heads are fully ported and will be available from Competition Components. The car is regularly street driven, weighs 3900+ lbs and is cruised regularly, so race fuel was not an option.

Buildup:

  • Stock 455 Buick Block (+.038)
  • Finishline Halo Girdle
  • Stock 455 Buick Crank
  • 4340 Pontiac I Beam rods (modified to fit Buick journal)
  • Custom CP Pistons
  • ARP Main Studs
  • ARP Head Studs
  • Edelbrock 455 Performer Heads (Fully Ported)
  • Comp Pro Magnum Roller Rockers (1.6)
  • Custom Mechanical Cam (260 @ .050, .600 net lift)
  • Beehive Springs
  • Titanium Retainers
  • Cometic Head Gaskets
  • SCE gaskets for the rest
  • All Block Work by Finishline Motorsports   (Thanks Bobb and Geof!)
  • Romac Balancer
  • JW Flexplate
  • Proform 455 Buick Timing Cover
  • 4500 Carb (Modified for E85 use)
  • E85 purchased at local Meijer gas station for $2.22/gallon
 
Results:  703 HP at 6000 RPM – 653 @ 5200 RPM. 600+ lb/ft of torque from 4200-6000 RPM.
 
These heads are available through a group purchase in feb 2011. Details
  

 

We hope to have some track results soon!

Dyno Test – Mike’s Pump Gas 496 HEMI

Tuesday, May 5th, 2009

Basic Parts List: