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#1
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Another KRE High Port Head Thread
As in Mysticmissle's thread, I am curious to hear some comments from people who have purchased completeHigh Port heads but NOT the 400cfm+ offset stuff. I know how KRE's customer service can be so don't any reviews on that but really curious on quality and workmanship because I'm trying to decide which direction I want to go in.
Looking for more opinions/results, etc with the standard head, no offset lifters or exotic shaft rockers, and if you used untouched heads or the CNC'd ones, which did you choose, what chamber cc did you use, and at what compression ratio did you end up with. The big question is did they meet your expectations, or were you disappointed. If its easier to just PM me to limit any BS, that fine.
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74 GTO Bracket/Street car and another 74 for the wifey to race with! 70 GTO 400, 4 spd, #'s matching and a little to nice for me to own. Friendship is like peeing your pants..everyone can see it but only you can feel the warmth! |
#2
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Wow this sure seems to be a touchy subject
Something you guys want to share? EHTTFMF!!! |
#3
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I have a set on a 462. I’m very happy and bought them in 2012. 56cc chamber with 350cfm option which they no longer offer. The short block was bought used with a few passes and had heavily modified WP’s that the previous owner was keeping for this aftermarket block build. The HP’s made the same power and torque at less rpm. I think for the money they are a great option with plenty of room to grow.
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#4
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Unless i am missing something.... |
#5
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I've been running the same flat tappet (and lifters) for 20 years and I'll probably kick myself for going to a roller because the cars current combo just works and its virtually maintenance free! I also realize I'll also need to make a head change rather its High Ports or something else. Tired of dancing on the edge of the ET break, time to go little quicker.
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74 GTO Bracket/Street car and another 74 for the wifey to race with! 70 GTO 400, 4 spd, #'s matching and a little to nice for me to own. Friendship is like peeing your pants..everyone can see it but only you can feel the warmth! |
#6
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That said, this summer I will have a std port HP 461 firing up. Port openings are near stock with bowl opened up and blended 2.20 valves go 359cfm at .800. Still .350cfm where I can use it in the .700s My heads I had sent bare to SD Performance so they did the seats and guides and the rest. 80 cc, 10.80 CR right now but will mill off a bit to get to 11.20 or so. Victor has had plenum work, just sent 1050 carb down to get worked, 16 hole billet annular boosters installed. A few bells and whistles, big kick out pan, V pump, ported rings with crank trigger and a sweet custom roller so I expect a good result. I will start off with a 850 without the crank trigger and work 1050 and crank trigger in. I expect to get in the 9s and I do not want to do it right off the bat. I will let folks know how it runs. But not dynoing this engine. Where I live its a major trip, expense and pain in the A. Drag strip and scales will be my dyno. But you know, there are some nice std port 340-350cfm CNC programs out there. People love the new E head with CNC chamber. And you do not have to worry about hood clearance issues with E heads like a High Port. |
#7
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I ran SD High Ports. I liked them. Called Dave and told him I wanted to run 8.80's with minimum maintenance and no fancy stuff, he did the heads intake and cam. My combo was a 535 injected on alcohol in a #3000 race weight 67 Firebird. After all the bugs were out, it ran 8.70's all day long with a few dips in the .60's. Small shot got it to run 8.45. My build is on Gach's site under 'High Ports'. I was GTEEO over there. Flow sheets and all. Not sure if it's Taboo to post a link. … Eric.
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Runner Up Q16 Norwalk 2013! |
The Following User Says Thank You to GTO For This Useful Post: | ||
#8
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I had my 462 freshened last year at KRE. Upgraded from 290 D-ports to some 365/64cc Hi-ports and more cam. Car runs great picked up .5 and 12 MPH. Ran a best of 9.87 @ 137 at 3020lbs. Zero issues.
Last edited by Doug Hopkins; 04-09-2021 at 08:32 AM. |
#9
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Do you know of any experiences with that port design? |
#10
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The Following 2 Users Say Thank You to slowbird For This Useful Post: | ||
#11
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I know someone who has a pair of them, do not know if the engine is up and running yet. |
#12
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OK, so you know of the experiences the owners had with every set of them ?
If someone tells me they had trouble with gaskets sucking in on top, real thin up there I am supposed to call them a liar because you said so ? Nah. Friendship is more important than that. |
#13
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Im referring to the 370 cfm CNC program you have recommended in the past. You seemed to have inside knowledge of how great they were. Maybe you referred to them as a "venturi port" design. Said one of your buddies made big pump gas power.... Just curious why you stopped recommending them.
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#14
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The gasket sucking in at the top of the port? Sounds more like a clamping force issue than an issue with enough material on the manifold. Ive seen some pretty thin gaskets but never have an issue sucking in. I had a set of iron d-ports that the area between the 2 intake ports was very thin. But the gasket stayed in place. That's just my .02.
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#15
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This is the best post and it's what should be done. But other option is sending current heads out to a good porter for work.
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#16
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