Head fitment
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Cross-Country
Joined: Jul 2019
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Head fitment
Will the FLOTEK 180cc Small Block Ford Cylinder Heads 203-505 work with the comp cams 35-320-8 cam and have enough clearance between the stock pistons and the valves? It's a 96 351W. Not really looking to build a racing motor, just an all around good truck motor. And those heads are in a good price range.
Lead Driver
Joined: Jan 2019
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From: N.W. Alabama
I would check PTV, because you have no idea what any PO, had done to truck, and Speedway motors has them $60 cheaper than anyone else. That cam and those heads should liven things up in it, my Pro Comps woke up mine, a lot, even with stock cam.
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Cross-Country
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Well I've had it since 60k miles, and the previous owner was my friend and he never did anything with the engine. So it's all stock. And hopefully a new cam and heads will liven it up alot. I'm also going to get some 24lbs injectors and calibrated MAF to go with it so it should have plenty of fuel. I'm not expecting it to go over 360hp which is the max for 24lbs injectors.
Cargo Master
Joined: Nov 2009
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I have no idea. And anybody that says they does, are probably full of it, unless maybe they've done this exact job with these part numbers. This is the sort of thing that you really need to check yourself. Which yes, does suck, since it can't be done without buying parts first.
At .544 lift, I would make an edumacated guesstimate that you're going to be fine, but I absolutely won't say I guarantee that.
At .544 lift, I would make an edumacated guesstimate that you're going to be fine, but I absolutely won't say I guarantee that.
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
That cam only produces 0.512" lift with 1.6 rockers. I have used the sister cam to this one in a rebuilt 5.0 with no issues, but add larger valves with stock pistons and who knows... better to measure than gamble. The first point of contact is usually between the intake valve and the rim of the piston dish.
Cargo Master
Joined: Nov 2009
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That cam only produces 0.512" lift with 1.6 rockers. I have used the sister cam to this one in a rebuilt 5.0 with no issues, but add larger valves with stock pistons and who knows... better to measure than gamble. The first point of contact is usually between the intake valve and the rim of the piston dish.
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Lead Driver
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Fleet Mechanic
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From: MD
I ran TFS TW 190R heads and this cam: https://www.summitracing.com/parts/tfs-51403002
Stock 95 351w shortbock.
Stock 95 351w shortbock.
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
Look at the actual cam specs, the cam lobe lift multiplied by the rocker ratio equals valve lift.
Cargo Master
Joined: Nov 2009
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Yeah, I missed that. I'm aware of how cam lobe lift and rocker arm ratio works.
The point still stands regardless, whether the cam and rockers are providing .512" or .544" of lift. I don't know for a fact that .512" will definitely clear, and that .544" wouldn't, without checking. I suspect they would both clear but that's not something I would stake any kind of reputation on.
The point still stands regardless, whether the cam and rockers are providing .512" or .544" of lift. I don't know for a fact that .512" will definitely clear, and that .544" wouldn't, without checking. I suspect they would both clear but that's not something I would stake any kind of reputation on.
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