Rod Shop

Paul Ceasrine · 03-31-2013, 11:57 AM

Dave Boertman

* 1971 Dodge Charger.......383/300 HP
* Class.....J/SA

For 1971, the 383 engine was re-rated by Chrysler from 335 HP,,,, down to 300 Horsepower.

Compression Ratio was dropped from {10.0} ,,,,,,, down to {8.6}

New #3462346 Cylinder Heads were utilized for 1971, but the 'Big Valve' (2.08" Intake / 1.78" Exhaust) were still retained.

Camshaft, was a 'Special High-Lift Bumpstick' with a --- .467" Intake / .483" Exhaust ~ 268* / 284* Duration, with 46* Overlap.

High-Load Rate Valve Springs w/Damper

The 'trick', a "Holley" Model #4165 Series - 650 CFM-rated (#R-6191) Carburetor, with a 1 9/16" Primary and Large 1 3/4" Secondary.
* (The 'first' version on the 'new' Holley Spread-Bore)

The result..........capable of {12.50's @ 110 MPH) on a 12.90 @ 106.56 MPH National Record.

Dave sent the other J/SA Racers (1969 Chevy II Nova, 350/255 HP cars) into another direction.

1971
* Winternationals...................Stock Eliminator Champion
* Gatornationals....................Stock Eliminator Champion
* Springnationals..................Stock Eliminator 'Runner-Up'
* Summernationals...............Stock Eliminator 'Runner-Up'
* Indy Nationals.....................J/SA Class Winner
* Fall Nationals......................J/SA Class Winner
* World Finals........................Stock Eliminator Champion
* National Record Holder.....J/SA

03-31-2013, 11:57 AM	#8
Paul Ceasrine VIP Member Join Date: Apr 2009 Posts: 2,546 Likes: 0 Liked 10 Times in 10 Posts	Re: Rod Shop Dave Boertman * 1971 Dodge Charger.......383/300 HP * Class.....J/SA For 1971, the 383 engine was re-rated by Chrysler from 335 HP,,,, down to 300 Horsepower. Compression Ratio was dropped from {10.0} ,,,,,,, down to {8.6} New #3462346 Cylinder Heads were utilized for 1971, but the 'Big Valve' (2.08" Intake / 1.78" Exhaust) were still retained. Camshaft, was a 'Special High-Lift Bumpstick' with a --- .467" Intake / .483" Exhaust ~ 268* / 284* Duration, with 46* Overlap. High-Load Rate Valve Springs w/Damper The 'trick', a "Holley" Model #4165 Series - 650 CFM-rated (#R-6191) Carburetor, with a 1 9/16" Primary and Large 1 3/4" Secondary. * (The 'first' version on the 'new' Holley Spread-Bore) The result..........capable of {12.50's @ 110 MPH) on a 12.90 @ 106.56 MPH National Record. Dave sent the other J/SA Racers (1969 Chevy II Nova, 350/255 HP cars) into another direction. 1971 * Winternationals...................Stock Eliminator Champion * Gatornationals....................Stock Eliminator Champion * Springnationals..................Stock Eliminator 'Runner-Up' * Summernationals...............Stock Eliminator 'Runner-Up' * Indy Nationals.....................J/SA Class Winner * Fall Nationals......................J/SA Class Winner * World Finals........................Stock Eliminator Champion * National Record Holder.....J/SA Last edited by Paul Ceasrine; 03-31-2013 at 12:59 PM.