LS-6 (r-port) manifold on GMPP o-port heads?
If your dealing with serious hood clearance issues,
having gone both routes a few times,on the 1970-71 chevelles, and some bbc corvettes,
and yes hood clearance makes this choice a P.I.T.A.,
I would suggest the torker II with some plenum and port clean-up work would be your better option.
I did both options on my B.I.L.'s 1974 BBC corvette with a 454 and the torker proved to run marginally better.
http://www.chevelles.com/forums/18-engine/311316-bbc-oval-rpm-intake-vs-torker-ii.html
http://garage.grumpysperformance.co...ock-intake-manifold-options.12394/#post-61762
I really want the GMPP oval-port heads for the LS-4 in my 74 coupe but I also want to run a Holley or Demon and keep it under the stock hood. In another thread, I have read that it is possible to use an r-port manifold on o-port heads. For this reason, I am considering the LS-6 intake, the only other choice being the Torker II, which I have not heard good things about. The GMPP o-ports have fairly large and squarish intake ports, which look to be mainly a little shorter than the openings on the LS-6 manifold. I was under the impression that the upper part of the intake port on the head could be radiused or smoothed to make it transition better from the much higher/taller runner on the LS-6 manifold. What do you guys think about how this particular combination might work?
the big block LS6 low rise rectangle port intake , used on the 1970 chevelles for hood clearance, can be used with the large oval port heads useing the rectangle port gaskets, theres a very noticeable miss alignment but it works just fine as an option if getting the car ro run is the main concern,(place a rectangle port gasket on the oval port head to see what IM referring too) while not needing a hood scoop or raised hood, it looks like a very bad mis-match but it runs surprisingly well, IF MOVING THE CAR VS PERFORMANCE IS THE GOAL, (we did this frequently, years ago, for the same reason (HOOD CLEARANCE)
BUT I GENERALLY preferred USING A DIFFERENT HOOD TO GAIN THE NECESSARY CLEARANCE
http://www.ecklers.com/product.asp?pf_id=10422&dept_id=1432
"I'm too computer-stupid to post a picture. HOW DO YOU DO THAT GRUMPY??"
NO! not stupid, just lacking INFO....you may as well learn
ok lesson time
(1) find picture
(2)put curser on center of picture
(3)RIGHT CLICK, and sellect (PROPERTIES)
(4)copy property ADDRESS... in this case its..(it ONLY WORKS DIRRECT FROM A PICTURE NOT A PARTIAL ADDRESS LIKE THE ONE THAT SHOWS HERE)
http://www.digitalcorvettes.com/corvette-photos/data/630/medium/R-GASKET.JPG
(5)so you high light the address BY LEFT CLICK AND HOLD it down while dragging the curser over the address,
and RIGHT CLICK AGAIN sellect (COPY)
(6)select minimize on that page (its the little subtraction symbol next to the red X in the upper right corner on your screen)
(7)
go to the thread you want to post the picture in and place the curser where you want the picture
(8) right click, select (paste) and the address appears like this
http://www.digitalcorvettes.com/corvette-photos/data/630/medium/R-GASKET.JPG
place these on each end exactly like this
hit submit
try it! its a whole lot more difficult to explain than too do once youve done it a few times......btw, some pictures CAN,T BE COPIED DUE TO BLOCKING SOFTWARE
2 more photos. Better shot of oval port gasket and Torker intake runners.
Valve covers - standard and tall versions. Tall ones still hit tops of stud girdle adjusters and girdle bar.
If your dealing with serious hood clearance issues,
having gone both routes a few times,on the 1970-71 chevelles, and some bbc corvettes,
and yes hood clearance makes this choice a P.I.T.A.,
I would suggest the torker II with some plenum and port clean-up work would be your better option.
I did both options on my B.I.L.'s 1974 BBC corvette with a 454 and the torker proved to run marginally better.
http://www.chevelles.com/forums/18-engine/311316-bbc-oval-rpm-intake-vs-torker-ii.html
http://garage.grumpysperformance.co...ock-intake-manifold-options.12394/#post-61762
I really want the GMPP oval-port heads for the LS-4 in my 74 coupe but I also want to run a Holley or Demon and keep it under the stock hood. In another thread, I have read that it is possible to use an r-port manifold on o-port heads. For this reason, I am considering the LS-6 intake, the only other choice being the Torker II, which I have not heard good things about. The GMPP o-ports have fairly large and squarish intake ports, which look to be mainly a little shorter than the openings on the LS-6 manifold. I was under the impression that the upper part of the intake port on the head could be radiused or smoothed to make it transition better from the much higher/taller runner on the LS-6 manifold. What do you guys think about how this particular combination might work?
the big block LS6 low rise rectangle port intake , used on the 1970 chevelles for hood clearance, can be used with the large oval port heads useing the rectangle port gaskets, theres a very noticeable miss alignment but it works just fine as an option if getting the car ro run is the main concern,(place a rectangle port gasket on the oval port head to see what IM referring too) while not needing a hood scoop or raised hood, it looks like a very bad mis-match but it runs surprisingly well, IF MOVING THE CAR VS PERFORMANCE IS THE GOAL, (we did this frequently, years ago, for the same reason (HOOD CLEARANCE)
BUT I GENERALLY preferred USING A DIFFERENT HOOD TO GAIN THE NECESSARY CLEARANCE
http://www.ecklers.com/product.asp?pf_id=10422&dept_id=1432
"I'm too computer-stupid to post a picture. HOW DO YOU DO THAT GRUMPY??"
NO! not stupid, just lacking INFO....you may as well learn
ok lesson time
(1) find picture
(2)put curser on center of picture
(3)RIGHT CLICK, and sellect (PROPERTIES)
(4)copy property ADDRESS... in this case its..(it ONLY WORKS DIRRECT FROM A PICTURE NOT A PARTIAL ADDRESS LIKE THE ONE THAT SHOWS HERE)
http://www.digitalcorvettes.com/corvette-photos/data/630/medium/R-GASKET.JPG
(5)so you high light the address BY LEFT CLICK AND HOLD it down while dragging the curser over the address,
and RIGHT CLICK AGAIN sellect (COPY)
(6)select minimize on that page (its the little subtraction symbol next to the red X in the upper right corner on your screen)
(7)
go to the thread you want to post the picture in and place the curser where you want the picture
(8) right click, select (paste) and the address appears like this
http://www.digitalcorvettes.com/corvette-photos/data/630/medium/R-GASKET.JPG
place these on each end exactly like this
hit submit
try it! its a whole lot more difficult to explain than too do once youve done it a few times......btw, some pictures CAN,T BE COPIED DUE TO BLOCKING SOFTWARE
2 more photos. Better shot of oval port gasket and Torker intake runners.
Valve covers - standard and tall versions. Tall ones still hit tops of stud girdle adjusters and girdle bar.
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