302 vs 351 build
Logistics Pro
Joined: Jul 2009
Posts: 3,635
Likes: 3
From: Lansdale, PA
I know diehard ford people who can't tell the difference, and there are a lot of people on this forum that need help.
The intake is only a little wider. The height difference isn't much. The actual height of the engine from frame rails to top of intake, is actually the same. Ford made the lower intake with no rise, so that the efi 351 and 302 required the same height, so the 351 fits in the van just as easily as the 302.
If the upper intake didn't say 5.8 on it, I'd bet that the inspector wouldn't notice. Mostly because all the front accessories cover the telltale block differences, and all the smog and solenoids and coil are in exact same locations. Same looking fuel rail, sensors, and intake.
All the smog inspectors I've dealt with, are only looking for aftermarket stuff. I've had to produce many CARB stickers to prove an item is ok to have. Never was questioned about if engine was original to the vehicle.
The intake is only a little wider. The height difference isn't much. The actual height of the engine from frame rails to top of intake, is actually the same. Ford made the lower intake with no rise, so that the efi 351 and 302 required the same height, so the 351 fits in the van just as easily as the 302.
If the upper intake didn't say 5.8 on it, I'd bet that the inspector wouldn't notice. Mostly because all the front accessories cover the telltale block differences, and all the smog and solenoids and coil are in exact same locations. Same looking fuel rail, sensors, and intake.
All the smog inspectors I've dealt with, are only looking for aftermarket stuff. I've had to produce many CARB stickers to prove an item is ok to have. Never was questioned about if engine was original to the vehicle.
Fleet Owner
Joined: Mar 2003
Posts: 24,724
Likes: 74
From: Blue Hill Township
I know diehard ford people who can't tell the difference, and there are a lot of people on this forum that need help.
The intake is only a little wider. The height difference isn't much. The actual height of the engine from frame rails to top of intake, is actually the same. Ford made the lower intake with no rise, so that the efi 351 and 302 required the same height, so the 351 fits in the van just as easily as the 302.
If the upper intake didn't say 5.8 on it, I'd bet that the inspector wouldn't notice. Mostly because all the front accessories cover the telltale block differences, and all the smog and solenoids and coil are in exact same locations. Same looking fuel rail, sensors, and intake.
All the smog inspectors I've dealt with, are only looking for aftermarket stuff. I've had to produce many CARB stickers to prove an item is ok to have. Never was questioned about if engine was original to the vehicle.
The intake is only a little wider. The height difference isn't much. The actual height of the engine from frame rails to top of intake, is actually the same. Ford made the lower intake with no rise, so that the efi 351 and 302 required the same height, so the 351 fits in the van just as easily as the 302.
If the upper intake didn't say 5.8 on it, I'd bet that the inspector wouldn't notice. Mostly because all the front accessories cover the telltale block differences, and all the smog and solenoids and coil are in exact same locations. Same looking fuel rail, sensors, and intake.
All the smog inspectors I've dealt with, are only looking for aftermarket stuff. I've had to produce many CARB stickers to prove an item is ok to have. Never was questioned about if engine was original to the vehicle.
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Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
Thread Starter
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More Turbo
Joined: Sep 2013
Posts: 687
Likes: 6
From: Chesapeake, Virginia
Anybody know any good literature for building/rebuilding these engines? Something that has torque specs for internals, talks about cams and heads, valve sizes and porting; something kinda in depth.
Fleet Mechanic
Joined: Sep 2013
Posts: 1,504
Likes: 8
From: Indian Falls, New York
There are Haynes/Chilton manuals dedicate to these engines.
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Logistics Pro
Joined: Jul 2009
Posts: 3,635
Likes: 3
From: Lansdale, PA
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
There are many books, but keep in mind they're all chock full of mistakes as far as specific parts and their numbers go. Misplaced pictures too. Best thing to do is get em all and read them all to weed out what info is incorrect. The most "correct" book on the late model SBF is Ford's own "Mustang 5.0" tech reference manual and handbook. It's not complete, but the info has been edited so you won't find the mistakes the others have. SA's books are the ones **** full of mistakes, yet they are handy to have as a reference. Haynes and Chilton ? They're good for the torque specs, the old "Motor Repair Manuals" are even better, lots of more detailed specs in them. The most useful I've found is the 1964-1970 manual, you can still find it on BN.com or ebay.
Thread Starter
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More Turbo
Joined: Sep 2013
Posts: 687
Likes: 6
From: Chesapeake, Virginia
Is $300 a fair price for a '94 roller block with crank, pistons, no heads or intake, and no pan?
And for the 351 swap, it's just the ECM that needs to be replaced to get full potential from it, right?
And for the 351 swap, it's just the ECM that needs to be replaced to get full potential from it, right?
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
Might be where you are. I paid $325 for a fairly complete 97 roller 351 and the 2WD ZF 5 speed it was bolted to, two years ago at a local pick-n-pull. Course, I had to pull the engine out too.