Howdy,
Now I know that I'm not asking about something using Stage Heads (illegal in the class I'm racing) but of the entire board population, the majority of the past/present users of Mechanical FI are here.
I've been talked out of using a blowthrough carb by the local speedshop/engine builder who has actually been to Bonneville and run over 200mph. My goals of ~145-150 are staggeringly short of that but still experience weighs heavily here. He showed me an Enderle version of Ron's Flying Toilet that greatly intrigued me. It really opened my eyes to MFI not being just stacks and dedicated manifolding. While that might be better it's not likely required for my goals. I'm also still trying to get my head wrapped around the fuel flow increase due to boost but I'll figure that out seperately.
I'm looking for a recommendation on what kind of manifold to run. I'll start out by saying that I have to run production type heads so I am limited to what will fit production type heads on an Off Center block. Likewise I don't have the money or the perceived need for a Champion/BGC intake. My real choices are the 86-87 with power plate and maybe an aftermarket plenum, or FWD EFI intake for forward facing dry flow intakes. The OEM 4.1 4bbl with a lot of plenum work and the EGR filled, KB #1, or a Weiand; all with some form of elbow and forward facing TB.
Main reason for forward facing throttles is that it's cheaper for a single TB with straight plumbing vs. buying a carb hat for on top of a 4150 flanged 4bbl TB. Also testing I've read from Steve Morris Racing Engines (who makes carb hats and helped design the original Extreme Velocity hats) says they see equal to slightly better performance with a good elbow to thier own hats. I have an OEM 4.1L 4bbl intake and FWD EFI intakes are cheap at a junkyard. The rest I'd have to buy and that looks like ~$200-300 for most of them. I can and probably will fab my own elbow and do port work if needed.
I need all the money I can save on pretty much everything so I can fit more of what I need into the budget I carved out of my tax return. I'm not planning on going stupid cheap but at a 300-350hp target (I'll get what I get with my combo of parts but I plan on making 300-350hp at the flywheel) I can afford to use some low grade parts intially. I'll step up the parts as my buget allows me things like a Stage block and a forged/billet crank that I can massage into a <183cid combo.
Thanks,
Now I know that I'm not asking about something using Stage Heads (illegal in the class I'm racing) but of the entire board population, the majority of the past/present users of Mechanical FI are here.
I've been talked out of using a blowthrough carb by the local speedshop/engine builder who has actually been to Bonneville and run over 200mph. My goals of ~145-150 are staggeringly short of that but still experience weighs heavily here. He showed me an Enderle version of Ron's Flying Toilet that greatly intrigued me. It really opened my eyes to MFI not being just stacks and dedicated manifolding. While that might be better it's not likely required for my goals. I'm also still trying to get my head wrapped around the fuel flow increase due to boost but I'll figure that out seperately.
I'm looking for a recommendation on what kind of manifold to run. I'll start out by saying that I have to run production type heads so I am limited to what will fit production type heads on an Off Center block. Likewise I don't have the money or the perceived need for a Champion/BGC intake. My real choices are the 86-87 with power plate and maybe an aftermarket plenum, or FWD EFI intake for forward facing dry flow intakes. The OEM 4.1 4bbl with a lot of plenum work and the EGR filled, KB #1, or a Weiand; all with some form of elbow and forward facing TB.
Main reason for forward facing throttles is that it's cheaper for a single TB with straight plumbing vs. buying a carb hat for on top of a 4150 flanged 4bbl TB. Also testing I've read from Steve Morris Racing Engines (who makes carb hats and helped design the original Extreme Velocity hats) says they see equal to slightly better performance with a good elbow to thier own hats. I have an OEM 4.1L 4bbl intake and FWD EFI intakes are cheap at a junkyard. The rest I'd have to buy and that looks like ~$200-300 for most of them. I can and probably will fab my own elbow and do port work if needed.
I need all the money I can save on pretty much everything so I can fit more of what I need into the budget I carved out of my tax return. I'm not planning on going stupid cheap but at a 300-350hp target (I'll get what I get with my combo of parts but I plan on making 300-350hp at the flywheel) I can afford to use some low grade parts intially. I'll step up the parts as my buget allows me things like a Stage block and a forged/billet crank that I can massage into a <183cid combo.
Thanks,