It’s no key that we appreciate a big-power small-block here at EngineLabs, particularly if they have a blue oblong on the valve cover. Therefore it only stands to reason that we are usually incredibly interested in this 351 Windsor-based engine build through Respect Motorsports . Built on the request of Holley for a giveaway promotion these people conducted earlier in the yr, this build had a quite loose set of design guidelines: make 1, 000 hp on nitrous with a small-block Ford. Prestige was weapons-free beyond that.
1, 000 horsepower upon nitrous isn’t exactly groundbreaking in the performance world, however it isn’t child’s play, possibly, especially when it comes to a small-block Ford. The amount of nitrous which will need to be injected is substantial, since Prestige decided to keep your naturally-aspirated combination on the streetable side of things. However , more on the way they accomplished that later within the article.
When you state “Windsor” and “big-power” within the same sentence, often times what “split block” pop up. As the fabled 500 horsepower “limit” is usually applied to the shorter-deck 302 blocks, the stock 351 block isn’t usually regarded as able to take an excessive amount of more power. So , in order to relieve any whiff of question about the stability of the enigne’s foundation, the team selected one of World Products ’ Man O’ War nine. 5-inch deck iron obstructs as the base of the develop.
Starting with a brand new iron alloy, the Man O’ War adds strength via increased material in crucial areas, like reducing the primary cap fastener size through 1/2-inch to 7/16-inch size in order to beef up the materials around the fastener. Additionally , the person O’ War can take a larger 4. 125-inch weary, has two extra mind bolts per cylinder and it has extended cylinder bores that may accept up to a 4. 250-inch stroke.
Being dropped in to the billet mains of the obstruct is a 4. 00-inch heart stroke, internally balanced Eagle crankshaft. Made from forged 4340 steel, the eagle crankshaft should easily hold up towards the target power, especially with no external balancing required. Mounted on the crank are a group of Eagle H-beam connecting supports. Made from the same forged 4340 steel as the crank, the particular 6. 250-inch long fishing rods use ARP 2000 pole bolts and are a solid stability of weight and power.
Hanging from the connecting rods is a group of 4. 125-inch forged pistons from DSS Racing . The particular 1 . 280-inch compression elevation is needed to fit the six. 250-inch rods, but is not so extreme that the hand pin bore cuts in to the oil control ring grooved. The ring pack steps in at 1 . 2mm, 1 . 5mm, 3. 0mm, and the 22cc reverse cupola on the piston helps keep compression setting to a streetable level.
Oil is supplied with a Melling M-83HV high-volume oil pump from Melling, along with a Canton pick-up tube designed to match the particular fabricated steel “road race” style oil pan the particular project is using. The skillet required some minor clearancing from the number five main cover but that was only a small hiccup.
Leading off the short-block is a group of AFR ’s Renegade 220cc cylinder heads sealed simply by Cometic MLS head mechanical seals. The Renegades retain the share 20-degree inline valve construction, but with upgraded 2 . 100-inch stainless steel intake valves, plus 1 . 600-inch Inconel wear out valves, to handle the extreme combustion heat. The 58cc combustion chambers have been completely COMPUTER NUMERICAL CONTROL profiled, along with the 220cc consumption port and 70cc wear out port. AFR advertises the particular flow of these heads since 325cfm intake, 249cfm wear out, at. 700-inch valve raise.
Controlling the particular valve events is a solid-roller camshaft from Comp Cams . With. 431 inch associated with lobe lift on the consumption and. 430 inch for the exhaust, that translates to. 690 inch of lift in the intake valve and. 688 inch at the exhaust control device. Duration comes in at 260 degrees at. 050 “, intake, and 274 levels exhaust with a 114-degree lobe separation angle. A Liberty double roller time set keeps everything over time with the crankshaft, and a good SFI-approved, aluminum, neutral well balanced Innovator’s West impediment keeps the vibrations under control.
A set of BAM strong roller lifters translate camshaft motion into rocker provide motion, via a set of 5/16-inch diameter,. 080-inch wall-thickness solidified pushrods, which act on the set of Scorpion Endurance-series aluminum roller-rockers in the stock 1 . 6: 1 proportion. A set of AFR’s dual valvesprings maintain control of the regulators with approximately 220 lbs of pressure on the chair. AFR says these suspension systems are good for a maximum raise of. 710 inch and they are good to 7, four hundred rpm.
Seated atop the engine any of Holley’s 9. 5-deck hi-ram intakes, but instead of the more traditional Ford side inlet, or even forward-facing inlet, Respect opted for a dual-4150 cover. Into the runners, Prestige set up a set of Accel 80 lb/hr injectors. The larger injectors are usually sized to be able to add the additional fuel needed for the nitrous oxide system being used on this motor.
As had been mentioned, this project uses two of Holley’s one, 000-cfm 4150 throttle body, which means two nitrous discs. However , the NOS Huge Shot plates will only possess the nitrous side plumbed, since the Terminator-X ECU will be managing the fuel enrichment with the main fuel injectors. The particular Terminator will also be controlling the particular nitrous solenoids through the built/in progressive nitrous controller, effective at pulsing the solenoids to manage the flow of nitrous oxide between 0 and 100-percent.
For the test, the. 073-inch orifice nitrous aircraft was fitted into every plate, which are both given by a single Big-Shot nitrous oxide solenoid, which should be good for about 400 horsepower-worth of nitrous. However , the nitrous is going to be ramped in and throttled electronically to reach the target hp number, instead of the traditional jet-changing to alter the power output from the nitrous system.
Before spraying the motor, the Prestige Motorsports group made a couple of naturally equiped dyno pulls to get a primary number. For the N/A draws, the run was began at 4, 000 rpm and stopped at seven, 200 rpm. The top all-motor horsepower was 631. 7 horsepower at six, 900 rpm and maximum torque of 521. nine lb-ft at 5, four hundred rpm.
Right after some quick nitrous fine-tuning, the ramp built in the particular Terminator’s controller started along with 25-percent nitrous activation from 5, 000 rpm, after which steadily ramping up to a maximum of 75-percent at six, 000 rpm, and keeps there for the duration of the operate. That ramp provided the peak power number of one, 001. 2 horsepower on 6, 600 rpm plus peak torque came this at 5, 600 rpm, measuring 898. 6 lb-ft. And the best part about all those numbers, is that there is one more 25-percent left with the presently installed. 073 jets. Therefore even more power is just a couple of keystrokes away.