Hello -I started this in the jet boat section and was told I'd get better feedback here so sorry for the duplicate posting...
For the 20+ years I've owned my boats all I've ever dealt with is the stock big blocks so I'm a newby when it comes to performance engines. I bought a Gale Banks kit and had a 509 built so that I can run turbos but I'm not sure which direction to go (blow thru Vs draw thru). I've read several posts talking about how draw thru is old school and it's not as good, etc and I totally get it since its 1980's technology. But for someone like me whose goal is to have a pump gas, low boost reliable engine, would I really be gaining that much by converting my Banks kit to a blow thru? I'm looking at money & time Vs overall gain. More importantly, would the Banks kit I bought work on the engine I have (Gale Banks kit with the 301 E 10 RayJays, but it only has the smaller intercooler)? I'm at a standstill and I'm not sure which direction to go so I was hoping to get some opinions on what I should do. If I stick with the current Banks kit then all I need to be done with this 4 year project is buy a carburetor and I'm good to go. If I convert to blow thru then I still need a carb but also need to buy a carb hat & fabricate some boost tubes to tie it all together which will take up more time and money. I appreciate the feedback, thank you.
Gen 6 BBC 509
JE Blower pistons 8.1 compression
Scat H beam rods
GM Forged Crank
Comp Cam Camshaft -custom grind for turbos
Gen 6 BBC Iron Heads with Inconnel Valves
Comp Cam Ultra Pro Magnum Rockers
The shop that built the engine ran it on the dyno N/A and she made 550 HP at 5500 RPM, 593 TQ at 4100 RPM.