TomZ

iTrader: (2)

I should probably talk to Holley on this one, but I thought I'd check in with the brain trust here first.

I'm going to be adding a blower to the 454 Mag that came out of my 242LS. The engine has a fairly new RHS top end on it, so now I'm looking to up the ante some, power-wise.

Unless I find a deal on something used, I'll need to buy new. The trouble is that I'm not finding a valid part number for the 177 or 256 blowers in a marine app. I found them in older catalogs for Holley/Weiand, but the part numbers no longer come up as valid. Part number for the 177 is 6534-1 (not sure on the 256... and not sure it would even fit under my hatch which is a big consideration). My concern has to do with snout length, pulley depth, and boost (I think the automotive kits come with a 125% overdriven pulley setup).


The plan will more than likely center on the 177 with a 4500 adapter and a 1050 Dominator (mimicking the 525sc). A cam change along with the blower should make for a very nice package.

Anyone got any ideas?

Thanks!

dsmawd350

http://www.offshoreonly.com/forums/s...-complete.html

Complete 250 kit almost new 2500

dsmawd350

If you can fit it go for the 250. The 177 is really a small block blower and is nothing but a heat pump

MILD THUNDER

iTrader: (3)

If you have to go new, and have to clear the hatch, I would look into the blower shop 250 series blower. Its a nicer piece than the 256 Weiand and 250 B&M in my opinion. If you are running RHS heads, and a better cam, etc, I would steer towards the 250 line of blowers over the 177.

TomZ

iTrader: (2)

I hear ya! I would really like to go with something in the 250 range, and I will so long as I can get everything under the hatch. How much taller is the 250 vs the 177? I seem them listed as "low profile," but I know they sit rather tall in my buddy's Cigarette Bullet (Hollowpoint here in the forum). Cutting the hatch is an absolute "no can do."

Anyone know of any 242LS blower installations beyond a 525sc/177?

TomZ

iTrader: (2)

Yep, I saw your kit listed in the swap section. Only reason I haven't reached out was because I didn't think it would fit. Any chance you could measure from the block/intake rail to the top of the arrestor for me?

Thanks!

dsmawd350

Yes I will post back in a few hours with the measurement t to top of carbs and to top of arrestor

TomZ

iTrader: (2)

Thanks!!

MILD THUNDER

iTrader: (3)

I dont think the 250 is any taller than a 177. Just longer.

dsmawd350

13 3/4 from front intake valley flat to round carb flange on top. 4" of arrestor on top