do i need mass air?
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do i need mass air?
i'm gonna start building a new motor for my truck probably next week. i'm gonna bump up the power with a new, slightly bigger cam, gt-40 heads, and an edelbrock intake. my question is will i need to use a mass air conversion to support my mods? i might even bump up the compression a little but not enough to keep from running 87 octane gas and i don't know the compression my factory motor has. its a '93 351.
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From: REARDAN WA
Look into MEGA SQUIRT before you make alll the desitions on the motor. It works with speed density and for the price its cheaper than converting to mass air. Its capable of 1000hp with speed density and its arround 200 bucks. I just finished my motor. 9.5:1 ,,, world product heads X303 cam ... once I converted to mass air I thought it would work but was wrong. It worked beter than SD but there were still issuess. Like an adjustable fuel regulator to drop the pressure on the injectors when I switched to 24#. Mega Squirt would have been a much cheaper way to go and the posibilities and mods are way more extreame. Make sure your lobe seperation on that cam is 114 and under .220 @ .050 ,,,,.500 lift. everything else should be ok
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From: Calhoun GA
Originally Posted by 4x4 ext.
I just finished my motor. 9.5:1 ,,, world product heads X303 cam ... once I converted to mass air I thought it would work but was wrong. It worked beter than SD but there were still issuess. Like an adjustable fuel regulator to drop the pressure on the injectors when I switched to 24#. Mega Squirt would have been a much cheaper way to go and the posibilities and mods are way more extreame. Make sure your lobe seperation on that cam is 114 and under .220 @ .050 ,,,,.500 lift. everything else should be ok
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Originally Posted by 4x4 ext.
Look into MEGA SQUIRT before you make alll the desitions on the motor. It works with speed density and for the price its cheaper than converting to mass air. Its capable of 1000hp with speed density and its arround 200 bucks. I just finished my motor. 9.5:1 ,,, world product heads X303 cam ... once I converted to mass air I thought it would work but was wrong. It worked beter than SD but there were still issuess. Like an adjustable fuel regulator to drop the pressure on the injectors when I switched to 24#. Mega Squirt would have been a much cheaper way to go and the posibilities and mods are way more extreame. Make sure your lobe seperation on that cam is 114 and under .220 @ .050 ,,,,.500 lift. everything else should be ok
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Originally Posted by RollinHi95
where can i get the mega squirt?
MegaSquirt EFI forums
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From: REARDAN WA
My truck runs nice without a chip only had to do the regulator. I want to chip it but not sure who to contact on a custom chip
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From: Calhoun GA
Originally Posted by 4x4 ext.
My truck runs nice without a chip only had to do the regulator. I want to chip it but not sure who to contact on a custom chip
An SCT dealer can tune almost all EEC controled Ford vehicles on the road today.
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i found this cam on comp cams website. would that work pretty good.
http://www.compcams.com/Technical/Search/CamDetails.asp?PartNumber=35-255-5
Ford 351W Computer Controlled XE254H Cam
DESCRIPTION:
HYDRAULIC-E.F.I. Speed Density, works with stock computer. Very strong torque, Excellent mileage, good idle quality.
would that work pretty good.
http://www.compcams.com/Technical/Search/CamDetails.asp?PartNumber=35-255-5
Ford 351W Computer Controlled XE254H Cam
DESCRIPTION:
HYDRAULIC-E.F.I. Speed Density, works with stock computer. Very strong torque, Excellent mileage, good idle quality.
would that work pretty good.
Cargo Master
Joined: Jan 2004
Posts: 2,512
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From: Cook Forest and Irwin PA
From Charles Probst:
You need a mass air conversion to be able to run any major engine mods.
that said,
yes, you need mass air. No longer in production, NOS is selling for $630 right now. I did mine last summer as prep for my 347 (which I just got back from being balanced)
If you are running under .500, the GT40 heads are not much better than the E7TE's. Either prop up the cam some more (you dont have to go '303' - ie. roller) or run GT40P heads (which add the fun of locating headers)
the problem with running a chip, which I DO NOT recommend is that the fixed fuel map is just that - fixed for popular combinations, unless you are sitting there with a power programmer whilst on the dyno, it will work worse than it will work better.
You need a mass air conversion to be able to run any major engine mods.
that said,
yes, you need mass air. No longer in production, NOS is selling for $630 right now. I did mine last summer as prep for my 347 (which I just got back from being balanced)
If you are running under .500, the GT40 heads are not much better than the E7TE's. Either prop up the cam some more (you dont have to go '303' - ie. roller) or run GT40P heads (which add the fun of locating headers)
the problem with running a chip, which I DO NOT recommend is that the fixed fuel map is just that - fixed for popular combinations, unless you are sitting there with a power programmer whilst on the dyno, it will work worse than it will work better.
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From: Calhoun GA
Originally Posted by RollinHi95
i found this cam on comp cams website. would that work pretty good.
http://www.compcams.com/Technical/Search/CamDetails.asp?PartNumber=35-255-5
Ford 351W Computer Controlled XE254H Cam
DESCRIPTION:
HYDRAULIC-E.F.I. Speed Density, works with stock computer. Very strong torque, Excellent mileage, good idle quality.
would that work pretty good.
http://www.compcams.com/Technical/Search/CamDetails.asp?PartNumber=35-255-5
Ford 351W Computer Controlled XE254H Cam
DESCRIPTION:
HYDRAULIC-E.F.I. Speed Density, works with stock computer. Very strong torque, Excellent mileage, good idle quality.
would that work pretty good.
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Joined: Jun 2003
Posts: 3,547
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From: Calhoun GA
Originally Posted by quaddriver
From Charles Probst:
You need a mass air conversion to be able to run any major engine mods...
...the problem with running a chip, which I DO NOT recommend is that the fixed fuel map is just that - fixed for popular combinations, unless you are sitting there with a power programmer whilst on the dyno, it will work worse than it will work better.
You need a mass air conversion to be able to run any major engine mods...
...the problem with running a chip, which I DO NOT recommend is that the fixed fuel map is just that - fixed for popular combinations, unless you are sitting there with a power programmer whilst on the dyno, it will work worse than it will work better.
The cam selection will be limited, but that isn't anything a custom grind can't take care of, and it's still cheaper than a MA conversion, that will still need aftermarket tuning to dial it in with aftermarket parts.
Cargo Master
Joined: Jan 2004
Posts: 2,512
Likes: 8
From: Cook Forest and Irwin PA
Originally Posted by Blurry94
Speed density CAN be tuned to work with many bolt-ons: heads, cam, RR's, and dare I say it nitrous and/or a blower.
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