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Not exactly, the 2V C heads bolt up the same as the M heads, the 4V heads are different but I don't know if a different intake is required, I would imagine so.
I thought that if you used a Cleveland head you had to also use a Cleveland intake with the spacers....
Originally Posted by Matts72
Not exactly, the 2V C heads bolt up the same as the M heads, the 4V heads are different but I don't know if a different intake is required, I would imagine so.
The 302C/351C/351M/400 heads are all 335-Series small port heads and will interchange. There are only minor differences between heads except for the 302C which had closed chambers. The 351C 4V heads will bolt onto any 335-Series block. With the low deck (9.2" DH) 302C and 351C blocks you can use any 351C 4V intake that is designed for 4V head use. The problem comes up when you bolt 4V heads onto a tall deck 351M/400 (10.297-10.302" DH). The heads fit just fine but there are no off the shelf intakes for the large port 4V heads, main reason is that Ford never built a 4V headed tall deck 335-Series engine. The 351M/400 2V head intakes will physically fit with the 4V heads but you will have huge port mis-match issues. The only resolution is to use a 351C 4V intake with intake spacers.
Dont ask where I am going with this-----, but has anyone see the PME AP03C adapters (351C to 351W heads) ? Also are the Yates heads (AP30Y) basically a C head clone?
If the PME AP03C adapters are available for W heads, then that means lots of possibilities. PME already has a thermostat housing for the reverse, C heads on a W block (cleavor). With W heads and a 302W intake, no adapter needed, except to plate over the C thermostat opening.
Anyway, just a thought for possibilities if anyone has used the AP03C adapters! TMI (if he does the injector holes in an adapter plate) injector plates used with single plane carb'ed intakes for the 400 could be put together kinda easily------maybe-- Hope this isnt too confusing!
http://www.flatlanderracing.com/pmespacers-17b.html theres the 400 to 351w adapters. I was going to go that route for efi but i got a single plane off ebay instead with the running of a 351w edelbrock perf. intake upper and lower looking at $800. But having to make a plate for my 4.6 elbow and injector bung install I have seen the single plane efi set ups they work well.
Its not that hard to get a 351W harness and computer and weld some injector bungs onto a 400 manifold... sure a lot cheaper than buying $800 in manifolds and spacers....
Its not that hard to get a 351W harness and computer and weld some injector bungs onto a 400 manifold... sure a lot cheaper than buying $800 in manifolds and spacers....
Got to agree with you there. Since the manifold is only moving air and not air/fuel, you are not as worried about manifold design on a low buck street motor. You can pick up cheap Holley Street Dommies and Performers for the 351M/400 and easily mod those. Use an aftermarket 5.0 TB elbow and you're god to go.
Still interested to see if anyone has any experience with the AP03C. Cleveland style block with Windsor style heads. PMI may be willing/able to make one a little thicker. Could use a 351W intake either carbed or FI. No more outrageous that Cleveland heads on a windsor block
My set up OBD-II computer(351w e4od all the tranny stuff will be shut off and tuned), with the street dominator intake from holley($400 to install injector bungs) 4.6L intake elbow to the intake with a adapter and use the 351w rail(space it due to windsor is narrower).
OBD-II has so many parameters to have inputs for... you can get a tuned EEC-IV and harness for under $500 from Summit, and it gives you the ability to tune it with your laptop. I'm sure there are other sources but since this thread has already been hi-jacked...
I'm running the Weiand Action Plus on a mud competition truck, so it works fine for me, I know I'm doing a lot more than 99.99% of people ever dreamed with a 400/434, it works for me, but there is no reason you can't use the stock manifold, because with the EFI, you are only using it to distribute air.
Well the obd-ii can be tuned just like eec-iv already talked to the tuner im going through. The 96 f150 351w obd-ii uses 64wires and has one more sensor basically a map sensor glorified no thermactor crap its pretty straight forward like eev-iv just more powers and ground the processors are much faster and just all around better. Heck they make a kit to convert eec-iv 351 e4od to eec-veec-iv to eec-v .
hi matts 72, paul here,
i think i know what happened here. nick made a mistake on the rpm part, he was referring to the strait edebrock 400 performer manifold. which he owns. you are mechanically correct and i realize that. no harm done as see it on your end . it is about being correct. he was trying to help, but he does need to be correct. we should have stayed out of this one until we are ready for intake adaptors and/or spacers. carry on boss and thanks for the correction.. i hopr the new poster gets this part. dont want to mess him up. later paul kiernan md.