But you'll need a different blower and a different spacer for the 416 LS3...

 

oh yeah... i can be a real dummy sometimes. i ain't even looked how much clearance was there since i pulled it out of the box

shouldn't if i get some cathedral-port heads. Steve over at RSD even swapped his LS1 kit over to a 427 without too much trouble. if you go & look at his numbers, however, keep in mind how relatively tame his cam is along with using small headers. it really falls off up top. that said, i also understand this manifold is still a big limiter compared to the new one, however it can still work - especially with a little extra volume in the plenum & getting some porting done. i'd originally planned on a 402 (& just missed a screamin deal on one), which would've potentially used cathedral heads anyway, so it kinda is what it is so i just want to make the best of it.

 

This response is really why the spacer was created. Working with what you have is the definition of hod rodding. Making the most out of every little bit. The spacer removes so much restriction under that intercooler, then shielding it from rising engine temps allows the coolant system of the intercooler to work more efficiently. Larger spacers really shine on 4+ cubed motors. Hp really starts to come up!

 

yeah, even just eyeballing it, i'll almost guarantee a 1" ain't gonna shoehorn in there

 

Can you provide any reference to the twin-screw (more specifically kb) spacer tests/results? I did quite a bit of searching over the last couple days and came up with nothing. Although I am certain the compressor would benefit from the thermal isolation and additional flow path of raising the intercooler off the floor of the lower manifold, I am uncertain if the twin-screws suffer the same 'turbulence' issues the roots type blower do from compressing the air in the manifold as opposed to the ts' internal compression.

 

Had a local guy allowed me to replace the lower billit plate with a phenolic plate on his hemi challenger and it reduced the actual blower temp by 60 some degrees, we never raised the intercooler up, because of cowl clearance issues, the major accomplishment was reducing a majority of heat soak. As long as the blower was moving air it would stay cool to the touch, sitting still in the parking lot it would start to heat up, once it started moving it would kool right back down.

 

****. Where do i sign up for my e force camaro?!?

 

can we get pics!

 

Of what? I have pictures of the phenolic spacer.

 

Bumping this!

Will these spacers fit a 2.3 Whipple?