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Sunnen Products and Jasper Engines and Transmissi...
The four-bolt main block Sunnen/Jasper Rev It Up ...
Jasper’s live testing ensures the engine is ready...
Students at University of Northwest Ohio trimmed ...
Jasper, Sunnen Give Away Street Performance Engine For Charity
In last month’s Coretalk section of Engine Builder magazine, we told you about the engine being raffled off during the International Motorsports Industry Show (IMIS) in Indianapolis December 8-10.
By Doug Kaufman
Sunnen Products and Jasper Engines and Transmissions have teamed up to produce a high performance engine that features a full complement of aftermarket parts.
According to Ron Williams, SMTSE, Southeastern Regional Mgr. for Sunnen, the proceeds from the raffle all go to charity. One hundred percent of the money raised from the Rev It Up Raffle will be donated to two well-deserving charities, the Tony Stewart Foundation and the Special Olympics of Indiana.
Sunnen has been participating in charity performance engine builds for the better part of two decades and some very exciting performance motors have been raffled off, according to Williams. Last year’s motor, a a 600 hp, 411 cid plant built for UMP Dirtcar Modified competition, built by Earnhardt Childress Racing, was won by Don Fultz, Fultz Racing, West Lafayette, IN, who, conveniently, had a UMP Modified Chassis in need of a stout powerplant.
According to Sunnen’s Williams, “The past few years we have had famous engine builders supply a basically de-tuned race engine for our Charity Raffle Engine. We are going back to our roots for the 2011 engine. This will be an engine that, if won, can be installed in the winner’s muscle car, street rod or truck.”
The “Rev It Up Raffle” will feature a Jasper Class II Performance engine, Chevy 350 cid, a great choice for performance-oriented cars and trucks, street rods and restored muscle cars. The Sunnen IMIS team will be adding other components such as the carb, intake manifold, water pump, distributor, harmonic balancer, etc., from a diverse group of well-known industry suppliers.
According to the results of our annual Machine Shop Market Profile, the Chevy 350 continues to be the most common engine rebuilt. It’s dominance has slipped somewhat over the years, but this year, the small-block Chevy was ranked as the number one engine rebuilt by 37 percent of shops.
The version produced by Jasper will produce approximately 350 hp at 5,500 rpm and 380 lbs. ft. torque at 4,200 rpm.
“The Class II Performanc engine is for the serious performance minded person who wants power for a specific application,” explains Darren Ragsdale from Jasper. “It’s perfect for performance oriented cars and trucks, street rods and restored muscle cars, small/medium size engines requiring good low speed torque or for OEM replacement.”
The machining steps conducted by Jasper include:
Square decking of the block
Main saddle align honing;
Torque plate honing;
Three-angle valve seat machining;
Precise surface finish measuring;
Electronically balanced engine assembly;
Precision crankshaft machining, oil hole chamfering and polishing; and
Ragsdale explains that, as delivered, the four-bolt main block engine has approximately 9:1 compression ratio and comes with an assortment of high performance parts including valves, coated Mahle hypereutectic flat top pistons, rings and gaskets, as well as a set of Dart Iron Eagle SS cylinder heads with stainless steel valves (2.02˝ intake/1.60˝ exhaust), performance valve springs and retainers and hydraulic camshaft with the following specifications:
.050˝ duration: 232° intake; 232° exhaust;
Advertised duration: 288° intake; 288° exhaust;
Cam lift: .320˝ intake; .320˝ exhaust;
Valve Lift: .480˝ intake; .480˝ exhaust;
Lobe Center: 106° Intake; 110° Exhaust.
Following the intial assembly and live testing at Jasper’s facility, the engine was delivered to the University of Northwest Ohio where Paul Higgins oversaw installation of an assortment of aftermaket performance parts.
Holley Performance will supply the new Ultra HP Street Avenger carburetor and fuel pump. Earl’s will supply all the plumbing with the Ano-Tuff line of hose and fittings. Up front will be a Fluidampr balancer along with a complete KRC Crate Engine Serpentine belt and pulley system. MSD will supply a Billet HEI distributor and Scott Performance Wires will finish off the ignition prior to installing the Flowtech Performance headers. Lokar Motorsports supplied one of its new NHRA-approved Anchor Tight locking dipsticks and throttle bracket kit. RPC provided valve covers and air cleaner, Wehrs Machine among others will supply all of the small items it takes to trim out the motor, Federal-Mogul supplied Champion spark plugs and ARP came on board with high quality stainless fasteners to button it all up. Endural provided a clamshell shipping container.
Electronically, a CVR Procucts’ Protorque starter and a Powermaster Products alternator was supplied,
This only covers the preliminary exhibitors who will be donating parts, with many more to come. A full listing will be on the board in Booth #2615 with the engine,” explains Williams.
“In addition, prior to delivery of the finished product to the IMIS Show, plans are for a detour to Lima, OH,” Williams says. “The team at the University of Northwestern Ohio will install the K & N Filters and add the Amsoil oil to break the cam in on their dyno. They will also be doing some tuning prior to making a few full pulls to provide horsepower and torque numbers.”
The winner will be announced in our news section of the website.