superram info needed
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 866
Likes: 22
From: Savannah GA
superram info needed
Got a few questions for you superram owners out there. I built a 382 ci. LT1 out of a 4" bore LT1 block with a 3.8" stroke crank. It runs LE3 heads and a 233/239 cam and a bunch of other bolt on goodies and longtubes. This winter I'm planning on tearing the motor down to raise the compression to 12:1 (from it's low 10:1), installing splayed main caps, duals, MAF and swapping intakes because I'm tired of not having as much low end torque as I feel I should. I grew up TPI, what can I say 
1: does anyone know how much shorter the LT1 plenum is for the SR compared to the L98 versions? I'm having trouble locating an LT1 set for the less than new price because I'm saving for other work, which leads me to my next question...
2: Do you guys with the SR's ever get your base and runners ported, and by whom? I'm looking to use it now on my stroker, and sooner or later on my new motor (434+ci) with 18 degree heads. I know it's still kind of a restriction, but I want the driveability and mileage without going to a single plane, so I want to get it CNC or extrude-honed ported. I couldn't find anything, who still does this?
3: Any LT1 guys in here run them? How do you like them? It's supposed to be good up to 6500 RPM with a big bulge in the torque curve. I'm not worried about loosing alot of top end HP because my motor rarely sees over 6k anyway, and power peak is like 5800 RPM.
4: Do you guys know where I can find flow data on the SR and other TPI/LT1 intake manifolds? My heads flow 277 CFM, I want to make sure the heads see as much of that as I can.
Trying to figure this all out while I'm trying to sell my old TPIS LTR equipment to finance the upper plenum and runners. Any info helps out alot! Thanks guys!
1: does anyone know how much shorter the LT1 plenum is for the SR compared to the L98 versions? I'm having trouble locating an LT1 set for the less than new price because I'm saving for other work, which leads me to my next question...
2: Do you guys with the SR's ever get your base and runners ported, and by whom? I'm looking to use it now on my stroker, and sooner or later on my new motor (434+ci) with 18 degree heads. I know it's still kind of a restriction, but I want the driveability and mileage without going to a single plane, so I want to get it CNC or extrude-honed ported. I couldn't find anything, who still does this?
3: Any LT1 guys in here run them? How do you like them? It's supposed to be good up to 6500 RPM with a big bulge in the torque curve. I'm not worried about loosing alot of top end HP because my motor rarely sees over 6k anyway, and power peak is like 5800 RPM.
4: Do you guys know where I can find flow data on the SR and other TPI/LT1 intake manifolds? My heads flow 277 CFM, I want to make sure the heads see as much of that as I can.
Trying to figure this all out while I'm trying to sell my old TPIS LTR equipment to finance the upper plenum and runners. Any info helps out alot! Thanks guys!
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
If you haven' t seen this you might find it interesting: http://www.stealthram.com/intakecompare.html
