Tell me about the 3.0 EFI’s with Downdraft intakes

[Collin C.]

Guess i will be an owner of a 3.0 ltr 250efi with the Down Draft intake and the Motorola single ECU.
Serial# OT973608.

This is going to replace a older style 3.0ltr 225efi
I know they sure sound different than mine.

Tell me about them, I heard some ran very strong.

I was going to rebuild a 250xb (and still may) but thought i would give a later style EFI as go. I believe they are based on the Opti block and cousins to the 300x.

Thanks!

[rvaha]

I had an older 98 go bad last year and had chris Carson build me a downdraft with motorola computer. I’m very happy with it. I believe it is stronger than the 98. So far very reliable. Everything stock so far - no heads cut. I havent had a chance to check compression. The powerhead is a little taller than the 98 so the 98 cowl won’t quite fit. I have it sitting on and wide black tape holding it in place. Looking for the correct cowl. I think a 3l Opti cowl will work but others can chime in for sure.

[EuropeanAM]

Very good motors. There were a few of them (specifically in the 2003-2004 range) that for whatever reason were WAY strong on performance. As stated above, essentially the same block used for Optimax models, combined with the Smartcraft-style electronics and a simple downdraft intake.

[Collin C.]

Thanks Don! I just never hear about the 250 ive always heard about the 225 being really strong. Ive read some old post stating that it can rival an XB in some instances.

[Collin C.]

Do you think the 250 is underrated like the 225 or is it still a lot stronger than advertised?

[EuropeanAM]

Still within the 10% tolerance.

[BamaBlazer202]

How could you tell if yours is one of the way stronger motors? Just the A$$ in Seat method?
serial# 0T702925

[EuropeanAM]

How could you tell if yours is one of the way stronger motors? Just the A$$ in Seat method?
serial# 0T702925

All your buddies will let you know.