Anyone got pics of a 225 Promax Chest?

[LakeFever]

Trying to compare and see whats different to the FF, especially the dump holes from inside the chest looking down and the bottom side looking up would be of great help

[Aaronhl]

Subscribing

[LakeFever]

Heres a 260 base over the FF, looks to be identical to my promarine 200HP gasket size which is what I was using

[patchesII]

The exhaust chest will have hardly any difference. I’m pretty sure the biggest difference in the Promax and the 200 is in the transfer ports

[LakeFever]

I measured the exhaust port height its the same as a ProMax 1.62"

The reason im asking is I an going to run a promax 225 ECU so I want to get the block as close as possible and in previous threads here irt was made clear the main difference in the 225 Promax was the exhaust chest and block exit. I have seen plenty of pics of the exhaust ports and measured mine to compare and they look very similar if not the same. If the dump is a choke I'll open it up but if it is the same as the FF? I'll leave it

Its mighty tricky to know without having all these blocks sitting side by side. First time anyone mentioned transfer port differences. I'll keep posting and updating, we'll get er figured. Thanks Patches

[Kevin_From_NJ]

This is a stock 225 promax exhaust.

[pkstv]

Here is a new block

[LakeFever]

You guys rock! I don’t suppose you have any pics looking up into the exit? Where it would meet the plate? Or even better a length/width measurement of one of the holes exiting the block

[Kevin_From_NJ]

This measures 2.145 tall 1.450 wide

[LakeFever]

Excellent help thank you! One more thing im curious about, if you drop a scale straight edge down in the chest running accross the bottom of the grooves there does the bottom port touch the scale or is that section lower than the top two?

For reference heres the FF exhaust dumps taken at as close as I could to your angle for reference. You can see it looks like its only the dump ramp thats different. If I place a straight edge in the valley of the notches it touches perfectly the top of the ramp on the FF dump so I suspect it will be 3/8" or so above the Promax dump ramp. I might post a pic of the straight edge so it makes sense. The FF Dump holes measure 1.75" x 1.45"

[LakeFever]

The even side ( holes 2,4 ,6 ) is on the left and the straight edge rides right in the valley of the notches and sits on top of the ledge pretty dang close to perfect. The odd side however the ridge of the ramp is slightly taller than the bottom of the valley.

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