These are performance numbers quite at home in the twenty-first century with its alloy heads and super fl ow numbers. Their Torker is a single plane designed for drag and road racing. I am doing this only because I had the engine out, it was a fairly inexpensive add on and if it does help its a additional beny. Organize your eBooks into a custom library and annotate pages. We also replaced the air-to-air intercooler with an air-to-water unit, though at this power level, they work equally well.
I only ask because I really know nothing and I want to make sure it ends up correct. I bought an untouched Weiand excelorator from a buddy and put it on. This might be out of the budget, but if you can swing it have the bowls in the heads ported, and the chambers polished. The cam you pick will dictate the springs you need. The Bronco is much too heavy to make use of these heads.
His price list doesn't include porting - I guess he did it himself or just left the ports alone. Words and Photos: Richard Holdener What can we say; we like junkyard motors, and so should you. Comp cams claims that these rocker arms can give your engine 15 to 30 additional horse power. For the 2V heads engine seeking more, consider the Aussie heads. To take advantage of this, a stroker of 377 to 408 is needed to provide enough volume and revs. In the late 1970s, American manufacturers began using metric designations for engine displacement. So what's the best way to raise your engine's compression? Now you can build one from the ground up.
The Aussie 351 heads uses the 4V wedge chambers with the smaller 2V ports to give us both excellent flow and burn characteristics more in keeping with the 351 cubic inches and bottom end construction so limited in most Fords with their oiling, rods and crank shortcomings. Had they forgotten everything they learned? None were ever produced in Windsor. Words And Photos: Richard Holdener Ford performance is all about the modular engine family now with its killer Coyote sporting dual overhead cams, variable cam timing and electronic fuel injection, but times were different back when Clevelands roamed the earth. The factory multi-groove valves were replaced with the more common, single-groove variety and treated to a multi-angle valve job. And when you allow a more aggressive ramp, you make more power.
The only problem I see with the aftermarket aluminum heads are the intake manifolds, otherwise they are a great alternative. In practice, Ford did use slightly different components in the 351M and 400 for different applications and for performance reasons, such as camshafts, timing sets, and valve springs, but functionally, the engines were identical except for crankshafts and pistons. It is also advisable to install a 100-psi pressure-relief spring if you're going racing. So, if your stock 400M has 8. The answer to that question was head flow.
©1999 Dave Resch All Rights Reserved. Trick Flow Specialties Trick Flow recognized the dilemma facing Ford buffs saddled with rather pathetic factory iron heads in North America. Additional upgrades to the 351C heads included new stainless steel intake and exhaust valves from Streetmaster. Wanting to establish a baseline in stock trim before any rebuild , we simply disassembled, cleaned, and painted the short block, forgoing any machine work save for a quick ball hone. I would like to go with a roller cam. The 335 Series Engines The were two engine types in the Ford engine design family known as the 335 series, the 351 Cleveland and the M-block.
Ultimately, Ford presented hot rodders with the Boss 351C engine with a hot mechanical cam, adjustable rocker arms, screw-in studs, guide plates, and one heck of a middle-block powerhouse. If you have a 351, you have either a Windsor or a Cleveland. A compression check shows an average of 170 psi. A quality cylinder head rebuild will include a procedure where a small amount of material around 0. Fortunately, the compression height distance from wrist pin centerline to piston top of 351C pistons is compatible with 400 pistons. Poor valvetrain geometry had damaged fresh Comp Cams Magnum roller rockers. Where else can you find complete, running motors so cheap? The 351M was a simple, de-stroked adaptation of the 400.
Use push rod guide plates and screw-in adjustable studs to steady your valve train regardless of heads. I guess it adds a lot of horsepower but requires custom headers. It started in the fall of 1969 ending in 1974 model year. Disappointing numbers with a carb swap and the same 30. Shaving milling or decking the heads Cylinder heads tend to warp slightly over time. There is no warranty on disassembled parts or engines. The second, is a Chevy racing trick used on their oil starved V6s.
After performing the normally aspirated upgrades, we decided it was time for some boost. Valve timing events and degreeing a new cam are everything to power. Remember, the 351M uses the same rod as the 400 with 0. The aftermarket promptly went after performance buffs, setting them up with single- and dual-plane high-rise manifolds, tunnel rams, ignitions, hot cams, carburetors, and more. What any stock Cleveland needed was the right intake and camshaft to go with the head flow. This Tech Tip is From the Full Book,.
This is especially important in open chambers notorious for detonation issues. Cooling passages have been plugged and modified for the Cleveland. I'd like to have a comparison between buying some used cast iron heads versus aftermarket offerings. I used the Comp Cams 1. Remember, though, that the Boss 351 crank is a specially selected one at the Ford plant and is a bit stronger stock. With the 400, Tim has an opportunity to get 1 hp per cubic inch or roughly 400 hp from a 400 along with approximately 450 ft-lbs of torque.