440 Mopar - Results - Car Craft Magazine

	Test 1		Test 2		Diff
RPM	TQ	HP	TQ	HP	TQ	HP
3500	614	410	601	401	-13	9
3700	626	441	606	427	-20	-14
3900	639	474	620	460	-19	-14
4100	640	500	634	495	-6	-5
4300	631	517	637	522	+6	+5
4500	623	534	629	539	+6	+5
4700	609	545	622	557	+13	+12
4900	594	554	607	567	+13	+13
5100	577	560	593	576	+16	+16
5300	557	562	572	577	+15	+15
5500	533	558	550	577	+17	+19
5700	514	558	537	583	+23	+25
5900	484	545	512	575	+28	+30
Peak	640	562	634	583
Avg.	589	522	595	529

Torque Forever
Test 1 consisted of the 505 engine combination fitted with an Edelbrock Performer RPM intake manifold and Mighty Demon 850-cfm carburetor.

Test 2 was exactly the same as Test 1 with the exception of the change to an Edelbrock single-plane Victor Jr. intake manifold.manifold.

The Edelbrock Performer RPM heads come with 2.14/1.81-inch valves and either 84cc or 88cc chambers. We chose 84cc.
The Edelbrock Performer RPM heads come with 2.14/1.81-inch valves and either 84cc or 88cc
We initially built and tested the 505 with an Edelbrock Performer RPM dual-plane intake, which made gobs o' torque.
We initially built and tested the 505 with an Edelbrock Performer RPM dual-plane intake, w
This 505 is intended for a '63 Plymouth, so we also included the price of a set of Tube Technologies Inc. (TTI) 2-inch primary tube headers that fit a '62-'65 Mopar B-Body. TTI is acknowledged as offering some of the best Chrysler headers on the market.
This 505 is intended for a '63 Plymouth, so we also included the price of a set of Tube Te

After the first of tests where the dual-plane made so much torque it overpowered the dyno, Westech's ace parts swappers Ernie Mana Sr. and Jr. swapped on the Edelbrock Victor and picked up a worthwhile 30 hp at 5,900 rpm.
After the first of tests where the dual-plane made so much torque it overpowered the dyno,
To top off the motor, we bolted on a Mighty Demon 850-cfm carburetor to ensure we had sufficient airflow so that the big Mopar wouldn't be starving for air.
To top off the motor, we bolted on a Mighty Demon 850-cfm carburetor to ensure we had suff