Read a post that the 4.6 cam is about the same as a crower 230 I believe. Anybody done this in a 4.0? I am about ready to replace mine in "96 D1 w/165k. A 4.6 would be cheaper, would it be any easier/simpler too? I am assuming I will need new lifters and pushrods, and crank/cam chain and wheels also. So tell me why/why not.
4.6 cam in 4.0 engine
- Thread starter RWF
- Start date
Works good.
New lifters are a must.
Timing set if it needs it.
Push rods are cheap and yours are probably bent anyway.
New lifters are a must.
Timing set if it needs it.
Push rods are cheap and yours are probably bent anyway.
Yes, timing set is chain and cogs.
I don't know what lifters cost...$100 a set??
$8ea sounds right on push rods.
I don't know what lifters cost...$100 a set??
$8ea sounds right on push rods.
Probably is, but I'd call Tillery to get a quote. He can typically get better quality stuff at cheaper prices.
Be careful with the AllMakes Timing set. I got a few of the large sprocket that were cast incorrectly. The notch for the woodruff key was too tight. A couple different suppliers had these bunk sprockets in stock and not all were aware there was a problem. A dremel with a small bit and steady hand would probably have taken care of it, but that's bullshit in my opinion.
Otherwise AllMakes is usually fine. But like Dan said, check with Will. Might as well try to get the best stuff for the least amount if money.
Otherwise AllMakes is usually fine. But like Dan said, check with Will. Might as well try to get the best stuff for the least amount if money.
Will just said 4.6 a bad idea,,,was not real clear on why but some guys are stuck on stock usually for good reasons,,naturally he said he would sell me the cam but thought there would be issues. My '96 has enough issues already, don't need more. Why would they not have put them in the first place, 4.0 not designed for it was his point. Back to what now. May stick w/4.0,, this is an oldish car anyway.
ptschram
Well-known member
I've sold many of the 4.6 cams for use in a 4.0, don't see a reason not to use it. It's not like it wasn't stock in the same engine with similar cylinder heads, there isn't enough lift to interfere with the pistons.
W/R/T the cam gear, if you buy one from me, it's already been checked to make sure it fits.
The AllMakes lifters are made in America.
Pushrods-unles you've bent them, I don't suggest replacement.
W/R/T the cam gear, if you buy one from me, it's already been checked to make sure it fits.
The AllMakes lifters are made in America.
Pushrods-unles you've bent them, I don't suggest replacement.
ptschram said:
You're a hack.
Like the lifters, the pushrods wear. If you replace lifters, you replace pushrods. That's pretty standard.
Besides, without even looking at his truck, I bet 8 out of the 16 are bent.
Not sure why Tillery said not to use a 4.6 cam. I'm sure he has his reasons and I trust him. But I've seen this set-up done a lot.
I'm running 4.6 cam in my 4.0 D2. Only because at the time the allmakes 4.0 cam was on back-order. It is so much faster...................
Not really can't tell any difference. Maybe not as smooth at idle as the 4.0 but since my old cam only pushed 6 cylinders hard to say.
Not really can't tell any difference. Maybe not as smooth at idle as the 4.0 but since my old cam only pushed 6 cylinders hard to say.
i dont know anyone around here that replaces pushrods. just make sure you reinstall the old ones in the same direction you took them out. match up the wear pattern on the pushrod to that of the rocker arm.
I just put a 4.6 cam in a 4.0 a few weeks ago with no problems and i have a 4.6 spec cam in my 3.9. I believe it provides more low end torque, but i'm sure its at the cost of a little fuel economy.
I just put a 4.6 cam in a 4.0 a few weeks ago with no problems and i have a 4.6 spec cam in my 3.9. I believe it provides more low end torque, but i'm sure its at the cost of a little fuel economy.
there is nothing wrong with reusing pushrods if valve spring seat pressure remains the same.
230 is a split duration profile, 4.6 camshaft is not. Lift is .446 vs .416 @ 1.6 and the lobe seperation angle is very different too, though crower is doing something odd with the way they calculate LSA
230 is a split duration profile, 4.6 camshaft is not. Lift is .446 vs .416 @ 1.6 and the lobe seperation angle is very different too, though crower is doing something odd with the way they calculate LSA
D&D sells a complete kit for the 4.6's with a Crower 229 and i bet a similar kit for the 4.0. It consisted of the cam, lifters, timing cog and chain i believe along with some gaskets and other stuff, i kinda dased off into space while he was talking and all for less than 600. Sounds a little high at first but after you add up all the costs its not bad and you get a performance cam in the deal.
robertf said:
the odd in the numbers might be that the lobes are cut at a slight taper to prevent walking