![]() What are your intentions with this combination? It sounds as if you're looking for more umph in addition to saving some money by switching to regular unleaded. the gph is spec by the rest of your build. the Holley needs 6.5 to 7 psi for proper operation. Your engine was optimized at the factory to operate with computer control and a TBFI system so I would surmise that their loss might have something to do with your situation. gearhead68 said: i have a built up 1974 351w, with a 750cfm holley carb, what should the fuel pressure be same as stock the local parts store has an option for electric fuel pumps of 2.5 to 4 psi or one with 5.5 to 9 psi. The stock crank, rods, and pistons were all still. I've always found that the total combination, regardless of the basis of the engine (in our case, the W), is what gets the car out of the hole or away from the stop light briskly. Starting at 7 psi, the turbo 351W produced 631 hp and 608 lb-ft of torque, while stepping up to 10.5 psi brought 719 hp and 687 lb-ft of torque. When the car launches, I get pressed back in the seat and stay there.having a good quality shifter became more important because my control became more difficult as the 60 second et's dropped.shifting into second barely past the 60 ft clocks was a major effort. The small-block Ford was produced in two foundries and engine plants during its long production life: Cleveland, Ohio, and Windsor, Ontario. psi 80 GHP JZ7.95 Si R8ce Produces 8 psi 80 GHP S2US ELECTRICAL Street. What made the small-block Ford innovative was its lightweight gray iron and thin-wall construction, which. Ford’s popular small-block V-8 engine began its production life at 221 ci with a 3.500-inch bore and 2.870-inch stroke topped by an Auto-lite 2100 2-barrel carburetor with automatic choke. It's a whole different feeling on the starting line with the W, even with a tight converter and mild camshaft. Ford Small-Block General Data and Specifications. It was running 9.5's in the 1/4 and could of taken it but that one run where things went wrong made it die. I split a stock 351w block down all the main bolt holes, that was a 410w with a 150 or 250 shot of juice I cant remember what I spraying. The 302 /5.0 L was to be phased out and the 255/4.2 L was to be an interim engine which would remain until the new V6 was in production the 255/4.2 L was a quick fix. Really depends what type of power adder you are wanting to run. The 255 is essentially a 302 cid with the cylinder bores reduced to 3.68 in (93.5 mm). ![]() They did make a 351w HO beacuse i have it in my 86 ford bronco. From 1980-1982 Ford used a 255 cid V8 instead of the 302. Personally, I've been pleasantly surprised with the torque, especially at low rpm's, of the W over the traditional 289/302 combinations I've run in the past. 180,000 PSI Rod Bolts (D1ZZ-A) Aluminum valve covers. ![]() Not bad for 3500 to 4000 RPM most of the time.Yes, the doggieness you feel could be a result of the combination of stock cam and low compression ratio.those late model stock W's weren't exactly performance combos.*G* As to fuel pressure set it to the specified range per the book of 39-41 psi. I was looking for a safe starting point for pressure untill I can get it dynoed and tuned. ![]() Before the engine was rebuilt in March, it averaged 13 MPG on a 400 mile round trip. The stock injectors were 19lb the 351w came out of a 1994 E250 with an EECIV computer and I am putting it into a 1997 F150. Although the 3:91 gears yield to very poor mileage, I drive my H.O. With the lower compression of the '72 model year, daily driving is much improved. While most enthusiasts gloat over the awesome 11.7 compression ratio of the '71, they forget it would be almost impossible to drive one of these cars daily on pump gas. ![]() Shot-peened & Magnafluxed forged 1041 steel Rods (D1ZX-AA) VIN stamped on back Drivers side of block Solid Lifter Cam (.490 lift/275 duration) (D2ZZ-A)įorged Pistons w/ one valve relief cut on top (D2ZX-AA) has all the required goodies to qualify for authentic Boss status. The 351 HO engine was not availabe in 1970. Fast Fox Here is a real link that refers to the 351HO engine. A-Premium Electric Fuel Pump Assembly w/Sending Unit Compatible with Ford F-150 F150 F-250 F250 1985-1986, V8 5.0L, Gas, Rear, Replace E5TZ9H307B E5TZ9H307BA. ![]()
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