Custom SP Manifold v MR?
Thread Starter
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Custom SP Manifold v MR?
Given the success Ski and others have had with modified SP manifolds like the Victor Jnr would like feedback for a 383 street / mainly strip engine.
MR is expensive down here ,SP is cheaper option if it will achieve same / better results.
Sell me on one or the other.
MR is expensive down here ,SP is cheaper option if it will achieve same / better results.
Sell me on one or the other.
Former Vendor
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
Originally Posted by rodj
Given the success Ski and others have had with modified SP manifolds like the Victor Jnr would like feedback for a 383 street / mainly strip engine.
MR is expensive down here ,SP is cheaper option if it will achieve same / better results.
Sell me on one or the other.
MR is expensive down here ,SP is cheaper option if it will achieve same / better results.
Sell me on one or the other.
I think you will be very happy with the SP. It really the best of both worlds. Medium runner length that falls right between the MR and SR.
Talk to 85vett he just put one on his 383 and has been licking off new bests all year long - in worse weather than his previous bests.
Le Mans Master
Joined: Jul 2000
Posts: 5,012
Likes: 5
From: OKC OK
Originally Posted by ski_dwn_it
I think you will be very happy with the SP. It really the best of both worlds. Medium runner length that falls right between the MR and SR.
I'd much rather have a single plane, than a MR or LT1/4 style intake.
Melting Slicks
Joined: Feb 2002
Posts: 2,699
Likes: 2
From: The Black Hole LA
Originally Posted by ski_dwn_it
I think you will be very happy with the SP. It really the best of both worlds. Medium runner length that falls right between the MR and SR.
Talk to 85vett he just put one on his 383 and has been licking off new bests all year long - in worse weather than his previous bests.
Talk to 85vett he just put one on his 383 and has been licking off new bests all year long - in worse weather than his previous bests.
Question is where does one buy one if they don't have a good enough machine shop locally to make it, or trust the local machine shop anyway.
Former Vendor
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
Originally Posted by hz900
Question is where does one buy one if they don't have a good enough machine shop locally to make it, or trust the local machine shop anyway.
You will have to contact Jeb, and have him make you one. We worked on this about 2 years ago and there are pictures and posts with documented results from the setup.
There are too many thing to account for that a local shop will not know - and you will have problems. Its a lot trickier than you might imagine to get everything perfect. Even with the several Jeb has done there are still some hickups to work through. But when do you ever buy something and it bolts up no problem.
Drifting
Joined: Feb 2002
Posts: 1,952
Likes: 2
From: Little Rock Arkansas
I've done my best to make it simple, but the fact is with the limited hood clearance available on the C4's it's just not... But for the most part it will bolt on your vehicle with relative ease and just a couple of small modifications to your existing stuff (like your throttle bracket).
What's superior with the SP is that it isn't AT ALL camshaft sensitive like the SR and MR are... The MR has reversion problems with large camshafts (ask Tom Wong) and the SR just simply doesn't like huge cams because it can't physically support the rpm they're designed to run... Both the SR and MR are excellent manifolds that do exactly what they're designed to do, but there are better alternatives.
-Jeb
What's superior with the SP is that it isn't AT ALL camshaft sensitive like the SR and MR are... The MR has reversion problems with large camshafts (ask Tom Wong) and the SR just simply doesn't like huge cams because it can't physically support the rpm they're designed to run... Both the SR and MR are excellent manifolds that do exactly what they're designed to do, but there are better alternatives.
-Jeb
