What V8 for circuit race car?

[Walt Kowalski]

My brief love affair with the ****el Rotary engine in my series 6 RX-7 race car is over.

I always hated the sound of the things but then I drove one on the track and the light weight of the engine helped car balance so much that I was hooked.

I can see why they are still track weapons after many years, even against latest model cars.

To get them really fast you need a big turbo but the heat generated causes problems in endurance races (my preferred race)

My beloved RX-7 has given me many joyful moments and although we have found the root cause of our problems (did not replace oil coolers after a crank breakage and the left over debris contaminated 2 new engines) I just want simplicity.

Sure if we were dumb enough to repeat the oil cooler issue with any engine it would also be contaminated and fail under race conditions BUT I am over rotaries just want simplicity.

It has been fantastic while it lasted but I am now looking at putting a V8 in the RX-7. Either that or sell the whole car but it is so well developed that I a lightweight V8 seems logical to what has become part of the family. He has his own personality and my grandson loves him

Therefore I want N/A and BAGS of torque for reliability and drivability. A standard engine with the breathing sorted is all I ask.

The yanks put LS1 and LS2 into RX-7 and instructions and kits available.

Toyota/Lexus Quad Cam also interests me. Apparently under 200KG and available under $1000. They tell me internals cope with big power. Is this true? Anyone know?

Does Ford have anything?

Is there something else I should consider?

I will weigh the 13B engine and turbo for comparison at some stage.

How can I find out the weight of an LS2 and Toyota Quad Cam?

I DO NOT want too much weight so anything cast iron is a no no.

Do I want Carbie or EFI? (I am useless on the tools)

Any ideas very welcome