PRNDL

New Viper engine is 500/500/500 500 cubic inches, 500 hp, 500 lb/ft torque, but that is NET. (also 10 cylinders). GM performance crate engine is 502 cubic inches (8 cylinders), rated at 510 hp and 550 lbs torque, but I believe those are gross #s. How would they compare on a dyno? (Side by side out of the car comparison). MJ

QuickVet

i think the viper motor is still gonna be better then the 502. ttt

Gordonm

Yes but the 502 will fit in a Vette. Try to fit the Viper motor in anything but a Viper or Ram truck.

Flareside

Gotta love those new Mopar engines! I want an old Plymouth just to have a reason to buy one of those Viper engines or the 528 Hemi :)

I don't see how the 502 could keep up with either Mopar offering. You'd have to go to the GM aftermarket to complete. I'd love to know what that new Viper has at the rear wheels. Anyone read a test yet?

tworottiedogs

isn't a 528 Hemi aftermarket??

Flareside

Nope, straight from Mopar (www.mopar.com). 10.25:1 compression, aluminum hemi heads, 610 hp! With those killer heads, they don't even need a real radical cam to get good power.

Too bad they don't sell the new 500hp Viper engine in a crate yet.

[B]

528 Hemi 610 Horsepower V8 Crate Motor

Bigger is truly better in high performance engines. Mopar Performance parts has developed a King-Kong size 528 Hemi Crate Motor which cranks out a whopping 610 horsepower and 650 ft.-lbs. of torque!

Features include:

· Heavy duty cast iron block with cross-bolted mains

· Aluminum heads

· Stainless steel 2.25" intake valves and 1.94" exhaust valves

· Heavy duty single valve springs

· Premium material umbrella-type valve stem seals

· 292 - .524"/.543" lift hydraulic cam

· Forged 10.25 : 1 compression ratio pistons - 4.500" bore

· Aluminum dual plane M1 4bbl intake manifold

· Forged steel crankshaft - 4.15" stroke

· Precision double roller timing chain and sprockets

· Spark plugs wires and breathers included

· Heavy-duty engine stand and shipping crate included

The 610 horsepower HEMI comes with Mopar Performance Parts cast aluminum valve covers and a chrome front cover, as well as Mopar's precise high performance electronic distributor. The motor comes with a basic 6-quart rear sump oil pan (1970-71 "E"- body style). Mopar Performance Parts recommends that for maximum performance, a 850/900 cfm Holley carburetor and 2 1/4" headers be used (not included).

P4786690 528 Hemi crate motor - 610 horsepower, 650 ft.-lbs. Torque
Note: 10.25:1 compression ratio with aluminum heads allows the use of current high octane (premium) pump gas and yet the total package makes more power than the original high ratio production version (as seen in Sept. 1997 issue of Car Crafe). Equipped with black finished cast aluminum valve covers.
Note: Hemi crate motors which change the emissions performance of the vehicle may not be legal for use on vehicles regulated for highway use in California and other states. Purchase must sign Purchage Agreement stating engines are for off-road vehicles only.






[Modified by Flareside, 8:59 AM 5/10/2002]

Flareside

Now you know why I'm building a 650+ hp 540 Chevy!! :lol:

It's either that or move over to the Dark Side!

MELVIN

Ok, now compare the price of that Hemi 528, to the 502. Try about an easy 5-7K difference

Flareside

Yep, you get what you pay for. The 505hp 500 ci wedge is similar in price and performance to the ZZ502. It's just that Mopar has more choices above and beyond this performance level. I love Chevy, but they're not the only game in town. I wish I could afford one of each!