which cam for a 3.9-4.6 swap for low end torque...

T

tradin1

Well-known member
Oct 17, 2004
88
0
lookin for part #'s and brands please. i assume that you can get them from summit. also what lifters to get.

i am going from a 3.9 to a 4.6 in a disco that will be used to tow atv's in the mts in cali and NM, so low end torque is a priority as is a smooth idle.

thx
 
S

ShaunP

Guest
I know its here in Australia but Tighe cams in Brisbane have some good ones. Dean would send you one or at least you could get the timing of one of his and get something similar. All the details are under range rover on his web site.
You want his 300at or 310 grind.
www.tighecams.com.au
 
D

D Chapman

Guest
tradin1 said:
lookin for part #'s and brands please. i assume that you can get them from summit. also what lifters to get.

i am going from a 3.9 to a 4.6 in a disco that will be used to tow atv's in the mts in cali and NM, so low end torque is a priority as is a smooth idle.

thx
Click to expand...
Don't waste your time with Summit. Call Mark at D&D fab. He knows his shit, and knows what works. 810-798-2491 www.aluminumv8.com

A rover cam is NOT cheap. Be prepared to drop 450.00 bucks on everything, cam, lifters, timing chain set......Mark deals in Crower cams. I just got the 260*, should be good for low torque from about 1200 to about 3500. It's not a hot rod cam, but should be good for a Daily Driver.

New push rods are 4.00 each

Be sure to have your heads gone over too.
 
ptschram

ptschram

Well-known member
Sep 27, 2004
21,955
50
In the shop doing the Lord's work one broken Rover
www.ptschram.com
D Chapman said:
Don't waste your time with Summit. Call Mark at D&D fab. He knows his shit, and knows what works. 810-798-2491 www.aluminumv8.com

A rover cam is NOT cheap. Be prepared to drop 450.00 bucks on everything, cam, lifters, timing chain set......Mark deals in Crower cams. I just got the 260*, should be good for low torque from about 1200 to about 3500. It's not a hot rod cam, but should be good for a Daily Driver.

New push rods are 4.00 each

Be sure to have your heads gone over too.
Click to expand...

If you think $450 is expensive, price an OEM Rover cam, drive, lifters. For that matter, price just about any other high performance cam.
 
D

D Chapman

Guest
ptschram said:
If you think $450 is expensive, price an OEM Rover cam, drive, lifters. For that matter, price just about any other high performance cam.
Click to expand...
Maybe I should read word it....

Compaired to a Small Block Chevy, the Rover cams are very expensive. 450.00 was on the low end. Some cams were as much as 800.00 for the cam only.
 
P

peter sherman

Well-known member
May 10, 2004
3,072
0
Fake Forest, IL
The folowing is avalible from Summit. Cheaper than D&D. I am installing the following in my 110. I am porting the heads now & expect to have it running in 2 weeks.

Cloyes Original True Roller Timing Sets
Timing Chain, Original True Roller, Steel/ Iron Sprockets, Buick V6/ V8, Set
$93.39
CLO-9-3146A


CRO-50227 $140.99
Estimated Ship Date: 5/4/05
OverviewBrand: Crower

CAMSHAFT


RHL-RL-8468 $159.99
Estimated Ship Date: 5/7/05
OverviewBrand: Rhoads Lifters

RHODES LIFTERS
 
T

tradin1

Well-known member
Oct 17, 2004
88
0
will this timing chain work under a 3.9 cover on a 4.6 block? are the cam and lifters specified suited for the 4.6?



peter sherman said:
The folowing is avalible from Summit. Cheaper than D&D. I am installing the following in my 110. I am porting the heads now & expect to have it running in 2 weeks.

Cloyes Original True Roller Timing Sets
Timing Chain, Original True Roller, Steel/ Iron Sprockets, Buick V6/ V8, Set
$93.39
CLO-9-3146A


CRO-50227 $140.99
Estimated Ship Date: 5/4/05
OverviewBrand: Crower

CAMSHAFT


RHL-RL-8468 $159.99
Estimated Ship Date: 5/7/05
OverviewBrand: Rhoads Lifters

RHODES LIFTERS
Click to expand...
 
D

D Chapman

Guest
I'm not sure what Peter is building, so I can't say if it will work of not.

But, Tradin1, no the 3.9 cover will not suit you on the 4.6. you need a 4.2L front cover I believe, along with a 4.2> harmonic balancer.

Don't skimp man, just call D&D, he has done ALL the homework. 30 years of experence is worth the extra $58 bucks. That way you know it's right the first time. Plus, that cam Peter is getting is pretty mild. It's only a 246*....You can do better than that, and still have a smooth idle and a broader power range.
 
P

peter sherman

Well-known member
May 10, 2004
3,072
0
Fake Forest, IL
D I am building a 3.9 for low end grunt. I want off idle power too 4000 rpms. This is a manual trans and I belive this setup offers better lugging ability. I am not a fan high lift you will lose vacum. I know this cam has been installed in 4.6's & will work with some mods. I thought I would pass along what I am doing & some options. You are correct on the front cover as 4.6 covers have no hole for the dist. I decided to keep my 3.9 because I have low miles & saved the money for a suspension overhaul.
It is a good idea to consult advice & D&D does know there stuff. I am not knocking them!!
Nor am I knocking anyones knowledge or ability!
 
D

D Chapman

Guest
Peter,
I'm guessing here, but with that cam, are you not using a thrust plate?
 
E

Electro Gremlin

Guest
tradin1 said:
will this timing chain work under a 3.9 cover on a 4.6 block? are the cam and lifters specified suited for the 4.6?
Click to expand...


Neither the Cloyes of the JP double roller timing sets will fit under the stock 3.9 B front cover (we tried), so you're stuck with the stock timing gear unless you can make some modification of the front cover.

Check out Piper cams in the UK. I'm running a RP4 in my 4.6, which seems to give some low-end oomph.

Norm
 
D

DiscoDino

Guest
for 450$ (without labor charges) you can get a whole new 4.6 (with wiring) in Lebanon :)...no cams for me, unless there is an "l" in the 2nd position, then I'll have white wine to go...

Anyways, interested to know what is the "best set-up for the buck!"
 
S

ShaunP

Guest
D Chapman said:
Don't waste your time with Summit. Call Mark at D&D fab. He knows his shit, and knows what works. 810-798-2491 www.aluminumv8.com

A rover cam is NOT cheap. Be prepared to drop 450.00 bucks on everything, cam, lifters, timing chain set......Mark deals in Crower cams. I just got the 260*, should be good for low torque from about 1200 to about 3500. It's not a hot rod cam, but should be good for a Daily Driver.

New push rods are 4.00 each

Be sure to have your heads gone over too.
Click to expand...
Your correct here, a cam with 260* duration work well in these engines. I've used a Tighe 300AT lotts of times here in Oz and it will give a significant torque increase, normally means the car will stay in one gear higher on most inclines on road. This cam has 260* and 415 thou of lift,It will idle fine, Dean also has one called 310 with 268* and 450 thou lift this is a great road cam and gives good highway performance. Ivan Tighe and his family are one of the original cam grinders here in Oz along with Waggot, kind of like Isky in the US I guess. Dean has a good bit of camshaft theroy on his website for anyone who is inrested, see the link in my post above.
 
Chris-St Louis

Chris-St Louis

1
Oct 27, 2004
3,000
4
D Chapman said:
Don't waste your time with Summit. Call Mark at D&D fab. He knows his shit, and knows what works. 810-798-2491 www.aluminumv8.com

A rover cam is NOT cheap. Be prepared to drop 450.00 bucks on everything, cam, lifters, timing chain set......Mark deals in Crower cams. I just got the 260*, should be good for low torque from about 1200 to about 3500. It's not a hot rod cam, but should be good for a Daily Driver.

New push rods are 4.00 each

Be sure to have your heads gone over too.
Click to expand...

I got that cam too.... Love it! D&D are awesome.
 
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