Tony's 1976 455 T/A
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Ignition:
*H.E.I. custom curved by Performance Distributors to 22deg @ 3000RPM + 12deg
initial = 34deg total all in by 3000RPM.
*Jacobs Ultra Pro Street Pak, digital multi-spark unit with 65,000 volt external
coil and rev limiter.
Spark
plugs Champion RV15YC6 gapped to .060”
Induction;
*modified
shaker assy using electric solenoid actuated cool air door.
* K & N - 14 x 3" filter element and Extreme filter element lid.
* 1976 800cfm Q-jet modified By Cliff Ruggles,
Jet
#77
Primary
rod 52M
secondary
rods 0.044”
Electric
Mallory 140 pump and fuel tank sump with complete -8An fuel system regulated to
6PSI just before carb.
Intake:
1969
Cast 4-BBL Intake, port Matched and 4-hole plenum milled out to resemble
standard aftermarket dual plane and using ¼ ” 4-hole carb spacer,
intake flows well up to 5700 while maintaining good port velocity.
Cylinder
Heads:
*
6X heads Street Ported by Barney Moravets out of San Antonio TX with
center exhaust ports separated and heat crossover blocked, 2.11" 1.77"
Ferrea S/S valves, solid bronze guides and KRE Spring loaded positive stem seals
on IN and EX.
Short Block:
* 455ci bored .030"
* Forged flat top pistons #L2359F30.
* Total Seal Gapless second ring pack.
*
Stock rods with ARP rod bolts.
Reciprocating
assy balanced by Ted Eaton out of Lorena Tx.
Block
decked and squared to achieve deck height average of 0.003” using head
gasket with crush thickness of .039” for quench of .041
Static
Compression Ratio aprox 9.72:1.
Camshaft:
Custom
Grind solid lifter with 230/242 @ .050”, gross duration 280/288, L/S
110, cam ground 110+4=106 I/C, total lift .499.505”
installed on a 106 I/C Rocker arms: HS 1.65 IN and HS 1.51 EX.
Lash
0.026”cold, JPB 9.300” pushrods.
Tried
1.65 on IN and EX but idle vac was a low 11½ HG in gear and very choppy idle,
engine feels stronger and very throttle responsive with 1.51 on Exhaust only and
vacuum restored to 17 ½” HG @ 850 RPM idle in neutral and 14 ½’ HG @ 650
in gear.
Headers:Hedman
4-tube headers 1 ¾ " primaries into 3" collectors, great fit!
Exhaust
Pipes:
Dr
Gas 3” duals into 2 ½” behind X-pipe into
Walker Dynomax Super Turbo Hemi Mufflers and out with mandrel bent 2 1/2"
back pipes into chrome split tips. Excellent system! Works great for my
combo!
Drive
train:
*Continental 10” with 2800-3000 stall,
10 bolt posi with 3.55 gear, Moser axles, and rear disk brakes
Factory
driveshaft with high strength u-joints and driveshaft loop, polyurethane
bushings in leaf spring eyes, axle perch pads, and rear sway bar bushings. Nice
and tight, no squirm, no wheel hop.
RaceTires:
28X10X15
Goodyear Eagle 1 /Nascar Racing Slicks @ 12PSI,
Desktop
Dyno Calculations Predict;
463
HP @ 5000 RPM
533
LBS TQ @ 3500 RPM
12.9429
ET @ 105.12 MPH
I drive this T/A daily to commute and it has great throttle response, overall power, and decent fuel efficiency. Also can run 87 octane hard on street with initial timing 12 deg for a total of 34deg at 3000RPM.