|
Jerry Brock's 455
If you've ever met Jerry Brock you immediately know that he's not a newcomer
to drag racing or to Pontiac power. He knows everyone it seems. He's had
great fun and a lot of success the last few years campaigning his potent
1979 Pontiac wagon. In 1988 Jerry felt it was time to put a little muscle
between the fenders and installed a mild 400 engine. The new found torque
propelled the wagon to the mid to high 14s. Not bad for a fully equipped
4210 pound vehicle...but Jerry wasn't satisfied. In 1995 he installed a
455 engine that really made Jerry's "sleeper" a go-getter. The
silver and gray wagon has seen plenty of quarter mile asphalt. He estimates
the 455 has launched the wagon 600 times down the strip, and logged 17,000
street miles since 1995. To quote Jerry, "the car is driven far, and
often, to cruises, shows and club events." [When things get hot down
in the pits, or on the highway, Jerry simply cranks up his AC to stay cool.]
While the wagon has seen it's share of car shows, Jerry's
real passion is drag racing. He has proven time and again that that a consistent
13 second Pontiac can win often. For example, Jerry won the Royal Pontiac Club Drag Series points
championship in 1994, 1997 and 1998. (He was the runner-up in 1996.) In
addition, he piloted the wagon to the final round at Milan, Michigan 5
out of 7 times this year, winning twice. He was also the runner-up at the
Indianapolis All-Pontiac event in 1996, and runner up at Cordova, Illinois,
in 1996, at the POCI convention event. In 1997 and 1998, the wagon fought
its way to the quarter-final round in the "Footbrake Class" at
Jim Butler's event. Noteable accomplishments for this unpretentious wagon...wouldn't
you say? Updated tech info in red. Jerry's
email address is: wagonking@email.msn.com
Technical Data
Engine Block: |
1974 Pontiac 455 with 2 bolt mains |
Bore and Stroke: |
4.15" x 4.21"; + .030" over, 462 cubic inches |
Heads: |
Update: 6x-4 heads at 92cc; 2.11" and 1.77;
7/16" studs; "street ported" by KRE; 150@ .20, 198@ .30,
230@ .40, 238@ .45, 244@ .50, 252@ @ .55, 254@ .60 (intake); .133@ .20,
178@ .30, 203@ .40, 210@ .45, 215@ .50, 219@ .55, 219@ .60 (exhaust) (28"
H20); RA 4 length SS valves |
Deck Height: |
+.003 (yep, above the deck) |
Valve Springs: |
Comp Cams # 995-16 dual springs |
Rocker Arms: |
Comp Cams Magnum Roller Tips; 1.52 to 1 |
Retainers: |
Comp Cams Steel Super Locks 10 degree # 740-16 |
Keepers: |
Comp Cams # 613-16 |
Valve Seals: |
positive teflon intake and exhaust |
Lifters: |
Comp Cams 857-16 rollers lifters |
Push Rods: |
Crane 5/16" |
Crankshaft: |
Stock, journals polished, balanced |
Rods: |
stock untouched except for resizing big ends |
Rod Bolts: |
ARP |
Pistons: |
TRW L 2359F +.030 forged |
Rings: |
Speed Pro moly rings |
Bearings: |
All bearings are Clevite 77 |
Timing Gear/ Chain: |
Edelbock double roller, 3 key way |
Gaskets: |
Fel Pro full engine set, Felpro exhaust manifold
#1424; Perma Torque head gaskets |
Camshaft: |
Comp Cams roller camshaft: 230 intake/ 236 exhaust
@ .050" with 112 lobes separation angle degreed in at 108 degrees intake
centerline. |
Intake: |
Edelbrock Performer RPM |
Carburetion: |
750 cfm Quadrajet; .075" (#75) primary jets with .047" (#47)
primary metering rods; .018" secondary rods. |
Fuel Pump: |
Carter P4601hp 15 psi electric fuel pump; Holley regulator set for 6
psi fuel pressure running through stock 3/8" fuel line |
Exhaust: |
Ram Air Restorations reproduction with 2.5" outlet; all 2.5"
mandrel bent pipes feed to Dr. Gas X crossover into Walker 2.5" Race
Magnum mufflers exiting at rear bumper |
Ignition: |
HEI distributor using the pickup only; MSD 6A ignition with MSD Blaster
2 coil; Accell cap and rotor; Motorcraft plug wires; Autolite #84 plugs
set at .045"; initial timing set at 8 degrees,
22 additional centrifical advance in by 2600 for a total of 30
total mechanical advance. Vacuum advance is 14 degrees |
Oil Pump |
Melling High Pressure 60 pound; 30-40 at idle; 10w-30 Mobil 1 Synthetic;
Fram filter |
Transmission: |
TH 350 (built by Jim Buehler of Toledo, Ohio) with B&M Holeshot 2400
converter; shifts normally under street conditions, and shifted manually
at the strip. |
Rear End: |
1985 Buick Grand National 8.5" "ten bolt" limited slip
with 3.42 gear ratio |
Suspension / tires: |
Cooper Cobra P235/60R-14 mounted on 14 x7 Pontiac Rally II rims on front
and rear. M&H 265/55-15 Street Master DOT legal race tires on the rear
that are mounted on 15 x8 Corvette Rally rims. |
Vehicle Weight: |
Approximately 4210 pounds with half a tank of 94 octane pump gas, full
interior, spare, jack, and Jerry at the wheel |
Dyno Numbers
Dyno pulls by KRE
RPM |
Torque |
Horsepower |
3100 |
490.8 |
289.7 |
3600 |
521.6 |
357.5 |
4000 |
521.4 |
397.1 |
4400 |
519.4 |
435.1 |
4500 |
514.3 |
440.7 |
4800 |
503.2 |
459.9 |
5000 |
487.3 |
463.9 |
5200 |
470.1 |
465.4 |
5400 |
448.9 |
461.5 |
For more dyno numbers click here.
Performance: Best
ET to date was 12.609 @ 107 mph at Maple Grove, June 99; MPG=14.34 highway
driving with the AC on.
Back to Torque Power
(engines and featured cars)
|