First & foremost, if any of this has been covered somewhere I missed (inconceivable, I know), please let me know. No need to re-hash anything.
The quick & dirty on the engine- it's a SVO Sportsman 351W block, 408 CI stroke forged rotating assembly (internally balanced & blueprinted), Trick Flow Twisted Wedge 185 CNC'ed heads, ERA bundle o' snakes, & 48mm TWM 8 stack EFI sitting on what I've been told is an original 351W GT40 Weber intake manifold. Pretty much everything else is up for grabs. I spoke to the engine builder & he was confident 550hp should be obtainable with the right cam & remaining valve train components.
Any way to tell if that "original" 351W GT40 Weber intake manifold is real? I wasn't able to find any easily identifiable markings.
The bundle of snakes from ERA have 1 7/8 primaries into a 2" collector (ID, OD is 2 1/8". Coming from mainly modifying Vettes & Turbo applications previously, this seems awfully small given that 550 hp mark. My initial thought was perhaps it was necessary to carry a smaller diameter for the scavenging effect? The only thing I really came across on here regarding the collector size was this post http://www.gt40s.com/forum/gt40-tech-engines-induction-exhaust/15776-reclaiming-lost-horsepower.html and of interest
Also, since I'm still going to have to get a cam & the rest of the valve train, are there any special considerations to take into account with the bundle o' snakes or 8 stack injection for cam selection?
Thanks all! :chug:
The quick & dirty on the engine- it's a SVO Sportsman 351W block, 408 CI stroke forged rotating assembly (internally balanced & blueprinted), Trick Flow Twisted Wedge 185 CNC'ed heads, ERA bundle o' snakes, & 48mm TWM 8 stack EFI sitting on what I've been told is an original 351W GT40 Weber intake manifold. Pretty much everything else is up for grabs. I spoke to the engine builder & he was confident 550hp should be obtainable with the right cam & remaining valve train components.
Any way to tell if that "original" 351W GT40 Weber intake manifold is real? I wasn't able to find any easily identifiable markings.
The bundle of snakes from ERA have 1 7/8 primaries into a 2" collector (ID, OD is 2 1/8". Coming from mainly modifying Vettes & Turbo applications previously, this seems awfully small given that 550 hp mark. My initial thought was perhaps it was necessary to carry a smaller diameter for the scavenging effect? The only thing I really came across on here regarding the collector size was this post http://www.gt40s.com/forum/gt40-tech-engines-induction-exhaust/15776-reclaiming-lost-horsepower.html and of interest
Using this method on 1 7/8 primaries the collector should be 3 9/32, that's a LONG way off from 2", do I need a bigger collector & if so how big for a roughly 550hp 408?On secondary pipes (collectors), the diameter was just as critical as the primaries and that given a 4 into 1 collector should have a diameter of 1.75 times the primaries.
Also, since I'm still going to have to get a cam & the rest of the valve train, are there any special considerations to take into account with the bundle o' snakes or 8 stack injection for cam selection?
Thanks all! :chug: