RS Motorsport :: Classic Speed Restored

Hi All,

I am planning on building a pinto in near future and I am hoping that some of you can help me to choose a suitable camshaft.

The bottom end is pretty standard, just 60thou over and balanced. I have two heads to choose from both with 45.5 inlet and 38.1 exhaust valves (from memory). One has large ports with a redline inlet manifold ported to suit and the other has more sensible looking sized ports.

I have twin 45mm webers with 36mm chokes and a new set of genie extractors.

I am hopeful of making 150+ HP however, most importantly I want it to be something that is not too much of a pig to drive on the street - this will be an weekend driven road car.

I have been considering something like a Kent RL30 cam, does anyone have any experience with these? I did use a Kent FR32 in essentially a standard pinto a few years back and it was very boring (despite all the hype in Classic Ford mag at the time), so I am a little weary of cam choice this time round.

In addition, it would also be good to find a contact in SE qld that can assist in setting up the head - I have killed many cam lobes on pintos over the years, so I would like to do it right this time. A recommendation for a good weber tuner would be great as well.

Cheers,

Damion

Hi,

what is your 1st gear ratio and also what is the rear axle ratio?

Grtz, Leon.

Hi Leon,

It is a standard 2L box, 3.65:1 1st gear from memory. Diff currently is a 3.54:1, however we may end up using a 3.77:1.

In addition to my questions above, what sort of compression ratio should I be aiming for?

Thanks.

With the std gearbox I would suggest you should get a not too lairy cam as the drop in revs when shifting up is quite big.
FR33 is a good cam for a roadcar with twin 45's.
Personally I would also say that the Kent GTS1 is the ultimate roadcam but I haven't tried that myself
CR depends also on fuel used but don't overdo it with cast pistons.
10.3 : 1 is a safe bet.
With 36 mm chokes use F11 tubes, 180 air jets, 55F6 idlejets and 145 mains with the FR33 or 150 mains with the GTS1.

Cheers. Yeah, the GTS 1 looks like a viable candidate as well.

I've heard good things about the kent ultimate road cam from someone with a very good reputation with pintos.

Thanks ratta tat tat.