Man-A-Fre RV Cam Kit

[BGarcia88FJ62]

Anybody have any experience doing a 2F rebuild using this kit?
Results?, Thoughts?, Opinions?




Complete RV Camshaft kit, including our Reground RV Camshaft, a Full set of Toyota Reground Lifters, and 12 special Valve Springs for use with the higher lift of an RV Cam. The valve springs are designed to provide the proper spring rate at specified installed height without the danger of coil bind.
RV Cam is 260 deg duration, .420" lift, 42 deg overlap, Lobe Centers @ 109, Clearance INT ..014" EXH .016".

 

[lcwizard]

just put one in a rebuild . Added headers. The combo feels noticeably better off the bottom and into early midrange. Top end seemed unchanged.

 

[Spook50]

just put one in a rebuild . Added headers. The combo feels noticeably better off the bottom and into early midrange. Top end seemed unchanged.

Your rig? If yes, have you been able to figure how much of a hit you took on your fuel economy with that combo?

Sent from my Motorola DynaTAC 8000x

 

[Trapper50cal]

Interesting that they told you the specs of the cam...when I called to get that information (in order to tune it correctly) they told me that info was proprietary.
(That was about 10 years ago though)

 

[BDSeff1fitty]

any reason you went with this over a delta regrind?

 

[BGarcia88FJ62]

Your rig? If yes, have you been able to figure how much of a hit you took on your fuel economy with that combo?

Sent from my Motorola DynaTAC 8000x

This would be nice to know, I sure don't want to take a hit in MPG.

Interesting that they told you the specs of the cam...when I called to get that information (in order to tune it correctly) they told me that info was proprietary.

Spec's are right off there website, wonder why they would say that.

 

[Trapper50cal]

This would be nice to know, I sure don't want to take a hit in MPG.



Spec's are right off there website, wonder why they would say that.

It was a long time ago...

 

[Mace]

All of the RV cams are essentially the same. Regrind or new (if you can actually find new any more).

LC, I'm surprised that you did not notice any improvement in the upper end. The stock cam falls flat on it's face at 3,200 rpm.. All aftermarket Cams I have played with have done well over 3K.

 

[Mace]

btw, I have never really seen a need to use "special" valve springs on a 2F. Stock ones spin just fine with additional lift up to 5K

 

[lcwizard]

Your rig? If yes, have you been able to figure how much of a hit you took on your fuel economy with that combo?

Sent from my Motorola DynaTAC 8000x

Actually the mileage is up about 2~3 mpg average. That could be to the fresh rebuild or the headers . Best previous highway was 11, now 15.5 . previous average was about 10, now about 13 in mountainous areas. In town went from 9~10 to 11~13. Overall power is way up. Pulling the 6 1/2% grade leaving town
is 4th gear at 60 now. It was 3rd gear at 45

 

[lcwizard]

All of the RV cams are essentially the same. Regrind or new (if you can actually find new any more).

LC, I'm surprised that you did not notice any improvement in the upper end. The stock cam falls flat on it's face at 3,200 rpm.. All aftermarket Cams I have played with have done well over 3K.

I think I don't notice much top end because of the carb. When I converted to fuel injection on my other 60 the mid to top end improved the most dramatically.
This rebuild has 1100 miles now, at about 2500 I'm going to put on injection.
Comparing two 60's side by side, one with stock cam, headers and injection 135,000 miles , the other with the fresh motor has the same headers, RV cam
and the carb, the older injected motor feels better through the upper mid and high rpm while the second motor has more right off idle but starts feeling like it has flat spots in the fuel delivery in the high-mid and above.
It's hard to make exact judgements when you do multiple mods at once. I'm really curious what will happen with the injection installed

 

[lehiguy]

I'm glad to se that MAF is now providing reground Toyota lifters. The trash they were selling for replacement lifters were an abomination, a crime against humanity.

 

[BGarcia88FJ62]

Thanks everyone for your input I do believe I'm buying this kit as I accumulate parts for the rebuild of a 1980 2F.

 

[Mark W]

yep, with carb, exhaust and compression upgrades a cam in this range will pull hard from lower midrange to higher than you really want to go anyway. without these other changes you will still see a bit more midrange. I have only installed one in an other wise stock motor and it is simply a slightly stronger but nor remarkable setup. The motors I have used it in have always gotten better fuel economy than when they were stock.

(I almost always use the Delta regrinds, but all the cams in this spec range are gonna work the same.)

Never needed to upgrade the valve springs for use below 5500 either.


Mark...