I'll be doing the re tune first but I would like to step up the intake if there's room for improvementHere's my prediction. You'll change to a Supervic. It'll make 45 more horsepower. 40 from adding 2 degrees of timing and 5 from the intake. Everybody will celebrate recommending the Supervictor.
Unfortunately there's a disclaimer - Joe was a Chevy guy so these were inevitably Chevy 383 engines. So, take with a grain of salt. Just thought it was notable that he saw the Jr. as an exception to the rule.Joe Sherman - Re: Port Matching said:This process is HIGHLY overated. I just ran two almost identical engines BUT one had ported heads (sanding rolls) and an intake that was openrd up to the size of the head, The torque was the same ( one ft lb more for the porting) and the max HP was only a few HP more TOO. 514 HP engines and that was all it did.
(follow on post)
The manifolds were RPM performers. One was opened up about 125 taller and 125 wider than the other. As long as the manifold is smaller than the head, it makes little or no difference. On victor jrs, it is almost the opposite. Years ago I did some base line pulls, then took off the manifold and ported it real nice (not just gasket match.) It picked 25 HP on top end with the rework. Dual planes seem to be more forgiving.
The article makes it very clear when you read it that the Victor Junior was fully ported and not just a gasket match. In that case the 25 hp makes perfect sense. You had to be careful reading a lot of his old articles because he rarely ever used a manifold without porting it.Actually, I did see a post on another forum where they said that it's generally not worth it to port match an intake.
Except the Victor Jr (not sure if Ford or Chevy), in that case it made 25 HP.
Here's the exact quotes from late Joe Sherman:
Unfortunately there's a disclaimer - Joe was a Chevy guy so these were inevitably Chevy 383 engines. So, take with a grain of salt. Just thought it was notable that he saw the Jr. as an exception to the rule.
Since posting articles seems to be the extent of the experience in this forum, here is one to ponder.....This should be a sticky.
I gave up fighting with the internet racers who, repeating what they read on some forum, said "you need small ports for velocity" and other such garbage. "AFR 185 heads are too big on a 302", etc etc etc. "Using a 2.02 intake valve on a 302 will lose you power". Garbage advice from people who dont have the intelligence to understand or the curiosity to think for themselves. I generally told them to find a set of 221 heads and go for it.....
The LS3 is likely the most powerful engine in modern times for its size, 376 cubic inches making monster power and TQ. Look at those ports. I just ported the LS3 heads on my 08 corvette (making them bigger than stock....LOL), leaving all else stock save for a baby cam of my specs. It now makes more power all over the tach.
If you want to make power, dont be a lemming.....