Cam & Mass Air Sensor?
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Joined: Apr 2007
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From: Cheyenne, Wyoming
Cam & Mass Air Sensor?
I'm looking to get started on "enhancing" my '97 F-350 - 460 EFI, 'cause I know it's capable of way more than it's doing now. I've been looking at a Comp Cam in the 268H or 272H range because I was so pleased with past installs in 390's and 400's (Carbed). But, I'm wondering about what I may need to do about the Mass Air Sensor on this '97 EFI 460? I've seen several options for cams, but there's always a reference to changing the Mass Air sensor with no additional information as to who, or what.
I also plan on flat top pistons (~9.35:1?) and some porting and polishing. Can the present setup learn and adapt to what I'm planning, or do I need to do some air and other "exterior" intake or air/fuel mixture work? I really don't want to have to resort to a carb again.
I'm running 32" almost stock tires, Stock 4:11 gears on a 5-Speed manual, Tach's 2500 at 75MPH. Stock exhaust manifolds into a 3.5" Diesel exhaust welded on where the Y comes together at 3.5" diameter, No Cat.
Can you guys get me started in the right direction?
Thanks in Advance!
Chuck
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'97 F-350. Hauls home my other "projects".
I also plan on flat top pistons (~9.35:1?) and some porting and polishing. Can the present setup learn and adapt to what I'm planning, or do I need to do some air and other "exterior" intake or air/fuel mixture work? I really don't want to have to resort to a carb again.
I'm running 32" almost stock tires, Stock 4:11 gears on a 5-Speed manual, Tach's 2500 at 75MPH. Stock exhaust manifolds into a 3.5" Diesel exhaust welded on where the Y comes together at 3.5" diameter, No Cat.
Can you guys get me started in the right direction?
Thanks in Advance!
Chuck
_________________________________
'97 F-350. Hauls home my other "projects".
Thread Starter
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New User
Joined: Apr 2007
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From: Cheyenne, Wyoming
Well, I think it's the stock air velocity sensor that somebody's lopped off the venturi part to get more flow, which I think isn't the thing to do on a velocity sensor. I have seen a couple after-market mass air sensors, but not for the 460. From what I can see, air-velocity sensors and mass-air sensors don't mix and match, right?
I should have clarified that on my first post. Sorry. What do you think?
Thanks
Chuck
I should have clarified that on my first post. Sorry. What do you think?
Thanks
Chuck
Junior User
Joined: Mar 2007
Posts: 78
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From: Pinedale Wyoming
as far as i know your engine dose not have a maf, unless it is different from a 95. if this is the case then a cam change is a no no. it will not idle good and fuel mileage suffers. ive already tried it. the flat top pistons are good and maybe some L@L headers if you want to stick with f.i. I would bet on premium fuel though with that little stock cam even in cheyenne
Last edited by Troy Bredthauer; Apr 12, 2007 at 10:12 PM.
More Turbo
Joined: Mar 2007
Posts: 707
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From: Buffalo, Wyoming
yah sry this is way off topic but i live in buffalo wyoming and where is pinedale at here is the square state, wow its kinda weird that 3 people from a state of 500k ppl all happen to be in this part of this forum
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From: Cheyenne, Wyoming
Yeah, Raider, 500K people during tourist season, huh?Back to matters at hand, forum-wise...
Hey Troy! I lived in Jackson 10 years, used to run sleds with Bucky's bunch out of Pinedale. I really don't mind a lopey idle, which I had with the 268 & 272 Comp Cams. Mileage isn't a real consideration, either, as most people don't buy a truck like this or fix it up to run with fuel economy in mind. What I want is a puller. Something I can drop a 9K pound trailer on and pass them stock pickups going up the summit.
If I could do a cam, pistons and a little head work, and get the proper air sensor setup and have it adapt to what I've done, that would be great. If not I'll have to go a different direction. (Like saving up for a SC setup!)
If somebody's got a setup like this that they're satisfied with, I'd sure like to hear about it.
Thanks
Chuck
Hey Troy! I lived in Jackson 10 years, used to run sleds with Bucky's bunch out of Pinedale. I really don't mind a lopey idle, which I had with the 268 & 272 Comp Cams. Mileage isn't a real consideration, either, as most people don't buy a truck like this or fix it up to run with fuel economy in mind. What I want is a puller. Something I can drop a 9K pound trailer on and pass them stock pickups going up the summit.
If I could do a cam, pistons and a little head work, and get the proper air sensor setup and have it adapt to what I've done, that would be great. If not I'll have to go a different direction. (Like saving up for a SC setup!)
If somebody's got a setup like this that they're satisfied with, I'd sure like to hear about it.
Thanks
Chuck
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Joined: Mar 2006
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From: fargo, nd
id be saving for the supercharger 
or swapping to a carb top end. a bigger cam wont help you for towing because the bigger cam raises your rpm ranges and cuts low end power (which is what you need for towing)
or swapping to a carb top end. a bigger cam wont help you for towing because the bigger cam raises your rpm ranges and cuts low end power (which is what you need for towing)
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Joined: Apr 2007
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From: Cheyenne, Wyoming
That's understandable. Changing all this stuff would warrant changes to the "brains" of the whole sheebang, which is what I'm looking for. I know all the internal pieces parts to make it a puller, but trying to "outsmart" or tune-in the electronics that control the whole mess is where I need some direction. The cam, pistons and induction tweaking are the easy part. Making it run right is the fun part. Caving in to a carburetor would be admitting defeat...
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Modify, Tweak, Run, Repeat
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Modify, Tweak, Run, Repeat
Post Fiend
Joined: Oct 2003
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From: New Jersey
all if the 97 F150, F250, F350, and F450 (if gas, not diesel) had MAF, i.e. mass air.
On the 7.5L/460cid F-series of that vintage the MAF was sized whereas you could flow about 25% more into the engine and still be within the sensor range. So enjoy a "fun" cam it should work without having to monkey with the electronics.
Though, you can use software to adjust the parameters to get things "tuned" just right.
On the 7.5L/460cid F-series of that vintage the MAF was sized whereas you could flow about 25% more into the engine and still be within the sensor range. So enjoy a "fun" cam it should work without having to monkey with the electronics.
Though, you can use software to adjust the parameters to get things "tuned" just right.
A call to Comp Cams is now in order!