304 efi t700

[Dr Terry]

Thanks Dr Terry, great advice and happy to hear about the TH350 cross member, looks like i can scratch a line off my running spreadsheet. I grabbed a pic of the 4L60E transmission serial number tonight (took a fair bit of brake cleaner to cut through the muck) and it seems to be a 4 at the front of the number. Would love to hear more about the Mem-cal options. Cheers

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OK, the 4HBD trans is the very first type of 4L60E, it has one less solenoid than the later units.

If you use the VS mem-cal it will throw continuous fault codes because it does not match the trans.

I can re-program your mem-cal to suit the 4HBD trans. & remove the VATS (immobiliser security) at the same time.

Dr Terry

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Good to know. I was having trouble visualising a late model engine bay and where the canister might be.

Wouldn't it make more sense to have the canister at the back, somewhere near the fuel tank? I assume the tank is where most of the vapours come from?

Personally, I like to be able to access my battery easily. Probably mostly cause I'm always pulling the buggers out to charge or swapping them over to another car.

The later Commodores do have their canisters under the rear of the car, instead of the engine bay.

The reason for this, is in a carby car the bowl of the carby needs to be vented to the canister also. In an EFI car, it is only the fuel tank that is vented thru the canister, so it can be mounted anywhere in the car between the tank & the engine.

Dr Terry