When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The stock LS1 and LS6 blade is 75mm, you can bore most of them out to 78mm. A few I have seen doesnt have enough material in the casting to go 78mm. Ive never offered a 78mm and have never done one but Ive ported enough of em to see that one or two here and there wont go that big so you may have to supply/buy/swap another.
Is it me, or does that edge looks very crooked,,like one side got Pnp'ed nicly, and the other is still thick?,,like it wasnt machined evenly,,or it was done lopsided,, looks like half of the outer ridge remains...and whats different besides the lil swirly marks on the inside?,,im not getting the whole "latest design" thing,,,"latest method of porting" maybe...is that what is meant? Not trying to be a pain, i guess i just expected more than what it is..
Is it me, or does that edge looks very crooked,,like one side got Pnp'ed nicly, and the other is still thick?,,like it wasnt machined evenly,,or it was done lopsided,, looks like half of the outer ridge remains...and whats different besides the lil swirly marks on the inside?,,im not getting the whole "latest design" thing,,,"latest method of porting" maybe...is that what is meant? Not trying to be a pain, i guess i just expected more than what it is..
there design with the swirls is helping force more air in and faster. and the fact its actually cnc'd!!!!!!!
Is it me, or does that edge looks very crooked,,like one side got Pnp'ed nicly, and the other is still thick?,,like it wasnt machined evenly,,or it was done lopsided,, looks like half of the outer ridge remains...and whats different besides the lil swirly marks on the inside?,,im not getting the whole "latest design" thing,,,"latest method of porting" maybe...is that what is meant? Not trying to be a pain, i guess i just expected more than what it is..
The pattern is dense on the steeper side & less dense on the thicker, or off-set side. We do the snout as thin as can still hold the coupler/bellows.
As far as the other questions, I believe we are the only ones to do a CNC program for the stock TB's, and it was CAD designed so the flow volume & velocity is matched on all sides where a hand port gives the same finish on all sides & causes turbulance as the airflow enters the blade area due to the un-even bore.
We are working on the truck ones as well as LS2's, but this took over 6 months to perfect so it will be another 45 days or so. We did several different cuts & patterns that looked good on the computer, but this design produced the most through the entire RPM range. Oh, our engineer that designs alot of this stuff was with Edelbrock in the old days & has been doing R&D for GM for years....including the pre-production LS1 heads.
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.
7 Most Reliable High-Performance Engines GM Has Ever Built
Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...