[TR] Camshaft selections - TRactor Engines

[John & Pat Donnelly]

Just finished the better part of the afternoon looking at camshaft design.
The Tilden website was the best, but my head is still swimming with all the
details and I'm not sure which one is best for me.

 

What I want is to get some higher rev performance from the TRactor engine.
In Southern Cal, freeway driving is mandatory, so high speed operation is
needed. But, I drive on the streets as well so it needs to idle OK.   The
only autocross I do is at the conventions, and racing is not in the cards.
>From my reading, a little longer duration might get me there.

 

My engine is basically stock with 87MM pistons/liners. Stock head. 4-2-1
Headers with SS exhaust. Stock HS6 carbs using TW needles (what it came
with).

 

BP Northwest offers a 270 duration cam. TS Imports offers a 260 cam. Moss
has one but I have no clue what the specs are. TRF and VB offers only the
stock cam. I know Racetorations and Revington offer cams but I'm inclined to
stay in the US. The Tilden site didn't offer anything to sell, just specs.

 

To cut to the chase, what I'd like to get is some recommendations of the
best combinations of cams/pistons/carbs that make the TRactor engine dance a
little better. What combinations work best for a little more spirited
performance?

 

Thanks!

Johnnie '67 TR4A