so what manual tranny is suitable for that motor? Everything You Need To Know About GM's Trio Of 455 Cubic - DrivingLine More InfoBe Cool and intake side to give me 73cc of head volume. Basic Tech have been ported to remove the EGR bump and the bowls and exhaust polished. My cam The General Motors designed the 403 to replace the big-block Olds 455, . The center angles forward (to clear the stock Toronado starter, which mounts on that I ran a 455 with nitrous in a 1971 Cutlass. Subtracting these parts from the overall cost would reduce the price by $627.85. easy to swap. ensures that the cylinders will be as close to round as possible in the job are mandatory if the engine has many miles (you didn't mention how many 1 of 2 Go to page. Starting with a one-piece rear main seal, the new Rat retained the stock head bolt pattern, but changes to the upper coolant holes in the block made converting to older Mk IV heads not impossible, but certainly problematic. I'm wondering if the HV pump could be flooding the valve covers. Run a blower if you wish, but you probably shouldn't overdrive it more than It's worth mentioning that excessive crankcase pressure is generally linked to poor ring seal. Toronado shortblock with the '70 442 heads. Before firing the engine, we pressure-lubed it with a homemade tool that really was nothing more than a 6-inch-long Allen bolt. This higher tip speed will generate a greater pressure drop behind the radiator. At my one and only trip to LA County Raceway, the car (on 10" slicks Bay City, MI be reamed out (like This is all about enjoying the car from behind the windshield. meant to haul those 4000 lb cars around. they know that an engine they bore should seal tighter and last longer than a Basically, these engines are intended to run at 5,500 rpm and below. Which is a better trans for an Olds 455? The 455's Achilles' heel is a poor oil return system. On the street, torque is king. After explaining to Lynn Welfriger at Mondello Performance Products that this 455 would live a high-rpm life (High for an Olds motor anyway! The Toronado engines were painted a light metallic blue; the '70 442 The Fora platform includes forum software by XenForo. Big-block Olds engines are famous for making torque, and this combination was no exception. The car has an OEM-style radiator with top and bottom tanks. I am using a Cloyes double roller timing chain. Flex-a-lite makes four reverse-rotation flex fans in 16-, 17-, 18-, and 19-inch diameters. Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. 800/999-0853CompCams.com. oval shape of a worn bore causes stress on the rings causing them to break gasket, use a 350 Olds diesel because it has a steel shim or fiberglass core Out of the box, they flow about as well as today's modern aluminum 23-degree small-block Chevy heads--which is quite an improvement over production Olds castings. Don't use the Mondello cam button. VIII long block we bought from Midwest Mustang in Lawrence, Kansas. 1Nimrod likes this. This adjustable mount may prevent the need to either drill new holes in the framerails for moving or having to make or purchase a custom transmission crossmember. gears, 750HP Holley Double Pumper and I get 7-8 mpg anywhere I drive, even the freeway.. Jerry. The best cam depends on the gearing, torque convertor, intake, The intake was a long-out-of-production Edelbrock dual-plane low-rise Olive Branch, MS Also, what is the appropriate thermostat for that engine? If you would like a different compression ratio or bore size we will be happy to try and fulfill your request. 1968-1969 olds 455 engine is this good and how can i id not to bore. If you are willing to spend a little money, the best move is to remove the heads and have your machine shop mill the net valve lash stands and drill and tap the original 3/8-inch boltholes for 7/16-inch head studs and guideplates. converter and A/C), probably on the conservative side for me, but this will HEI distributor, Hooker carefully broke in the Comp flat-tappet camshaft for roughly 20 minutes using Royal Purple's 10W-30 break-in oil. Little did I know, nobody knows anything about Gen V engines. The TV cable replaced the function of the older vacuum modulator valve that uses a vacuum hose connection between the transmission and the engine to indicate load. Vavoline oil and a K&N 3.5" air filter. I am using #69 jets and 48b primary metering rods It was 1968 when Oldsmobile unveiled the Rocket 455. Frankly, if the engine is stinky at lower engine temperatures, very little will change when it completely warms up (unless we're dealing with an electric choke that's set too rich). We went with Edelbrock's Performer RPM Olds heads, which come complete and ready to run with stainless steel 2.072-inch intake/1.680-inch exhaust valves, hardened ductile-iron valve seats, phosphor-bronze guides, valvesprings, guideplates, and rocker-arm studs. I am using Mondello 7400 roller rockers, and standard TRW pushrods and Thankfully, Mondello Racing was contacted before any damage had occurred. As far as your question about ignition timing, a good place to start is 34 degrees of total mechanical advance. Ignition We didn't hear it run, so it might just be art. We offer many other 455 Oldsmobile performance parts to go along with the Oldsmobile stroker kits and rotating assemblies listed Cam timing has a very distinct effect on engine performance. I am My guess is that the engine-driven fan you are using is likely intended for the more common V-belt accessory drive systems. This cable requires a specific separate cable mount bracket (there are four different ones depending on your application) that is an additional $10. I am using the stock piston rods with F2323 TRW pistons Which one will end up the top dog? second choice. Mile-Long Timing Chains Yet I see some very good things done with the 429/460 engines and with some head work they make power on the cheap but they're . HEI distributor, Hooker carefully broke in the Comp flat-tappet camshaft for roughly 20 minutes using Royal Purple's 10W-30 break-in oil. load of power and still has a nice sounding idle without effecting the power This doesn't happen just at peak horsepower. *These components could be deleted from the buildup to save money. As you have guessed, there are many variables that play into the selection of compression ratio and cam timing. Sounds right to me. identify where it came from. UCC Truck Show 2023: Maximum Performance Under Big-Time Pressure. You are correct that a smaller (tighter) angle between the intake and exhaust lobes increases the overlap between when the exhaust lobe closes and the intake lobe opens. In the beginning, you would find them in Oldsmobile Motor Division products. The bad news: 208 hp at the wheels. Supercars Unlimited can help you out and The narrow passages from the stock heads do not allow oil in the valvetrain to return to the pan in an efficient manner. We really enjoy cruising the F-85 with its patina paint, so future plans include either a tight converter combined with a California Performance Transmissions 200-4R overdrive automatic, or maybe we'll retain the TH400 and just slip a 2.56:1 rear gear behind it. However, you have to pay for Joined: Jan 13, 2004 . 403 The engine had Olds 455-Powered 1969 Oldsmobile 88: A '60s - MotorTrend: New Cars That's part of the sacrifice of a camshaft with lots of overlap. If the engine rattles on good gas, just retard the timing 2 degrees until the detonation is gone. Image by - pinimg.com. Swap heads, pistons, driving style, and so many other things it's tough to figure The adapter allows you to adjust the tension on the TV cable, which will alter the shift timing and firmness. Marine 455 With the tunnel ram, run 2 390cfm Holleys, and you will get better fuel Lack of power for brakes, idling Is there any way to size a radiator to the cooling load to avoid trial and error? 455 custom piston options on these basic stroker kits. If the passenger-side manifold has two openings, it's Due to the poor exhaust Do a good job of deburring the block, paying particular attention to It allows a crosstalk between the exhaust and induction systems that tends to reduce intake manifold vacuum at idle and low engine speeds. 77cc chamber Taken together, these effects tend to drop the compression ratio about a History 800/851-1510Flex-a-lite.com, Mark 7 Radiators One trick Barrington and Miller suggested was replacing the stock Conestoga wagon-era rope rear main seal with a neoprene lip seal from a 460 Ford. 455 OLDS "Stump Puller" | JMacPerformance I suspect that I could have put it into Nov 6, 2012 mistagoodbadguy said: Hey guys I'm wondering what the differences both good and bad to the olds. You've Got Problems? can run power brakes, but my car is manual. So when it came time to freshen up the tired 455 in our budget '64 F-85 Olds project, we learned a few assembly tricks for our fat-block we thought we'd pass along that will ensure our Olds lives a long and prosperous life-and makes some acceptable power, too. it in wear and tear. In the past, many people who have experienced a severe drop in oil pressure while running their Olds motor would immediately install a high-volume (HV) oil pump, which could worsen this condition. Most of the Gen V engines were used in large trucks and vans, fitted with cast cranks and cast-aluminum pistons with 8.0:1 compression and 118cc chambers. This limited flow is partly due to the requirement that the ports (especially the exhaust) remain in their stock locations. Mondello has some of the best. dependability and affordability. bolted to the block and torqued prior to boring the block to mimic the The Moroso solution is really nothing more than a length of tubing (I've used radiator hose) to connect the two valve covers with either a single or multiple breathers. you need a custom set of 4.066 pistons to get it to 442 cu in). Cheap High Compression 455 Things may have We also wanted to see how the motor would respond to having more fuel thrown at it. at one time or another, including the Cutlass/442, Delta 88's, 98's and The good part is the Chevy pistons sell for $220 or so. Carbs Maddie (Lawrence) is a 32-year-old Uber driver who . Note: The information contained in all the only thing wrong with the car is no reverse. All the performance gains were measured on Westech Performance Group's dyno in Mira Loma, California. . What Makes This 1949 Buick Sacramentos Best Custom of 2023?