[demonic68]

Hey there guys before I take the plunge and order my heads has any one used the Buttler performance BPI ported race heads? I have been looking at the KRE hp heads only because of the rated 330cfm out of the box. But I have never worked with KRE. for the price it seams like a good deal. Now as for the Buttler BPI heads here are the head specs

Edelbrock Aluminum Round Port Cylinder Heads
72cc Ported Heads with Ferrea Valves, 10 Degree Retainers & Locks, ARP 7/16 Studs, Hyd or Solid Springs 315+ CFM @ 28" (Can produce 700+ HP)

Now I have worked with Buttler before And loved the customer service My hole bottom end is Buttler. My goal is 550 whp with a 250 shot of nitrous also looking to get 12.5 to1 compression running e85. So what set of heads would you suggest I would like to get the best head for my money and have it be some thing I can grow into if needed as it takes some time for me to make big purchases like this.

[Aaron Quinton]

I think the Butler E-heads or KRE High ports will meet you goal of 550 hp. I've had good success with KRE and Butler. From a performance perspective, the KRE High Ports have more portential for performance improvement down the road.

The E-heads will be capped at ~350 cfm without sleeving the push rod. The High Ports will go 400 cfm before sleeving the push rod.

The High Port has a more efficient combustion chamber as compared to the E-heads.

You will be ok either way you go. If you're looking for growth in the future, the KRE package will likely provide the advantage.

Good luck with your build!

[demonic68]

Thanks Aron now I read that KRE's flow bench reads 5% higher than like the flow bench buttler uses what are your thoughts on that? Sorry for all the questions this is just a big investment for me lol

[Jeff Kinsler]

Go with the Butler heads... They will be fine and can be ported for more power down the road..

[steve25]

Yes, the KRE flow bench seems to be a tad high. That being said you do not need 315cfm to produce 550 hp.
In fact since you did not post any other info about the rest of the car for us to go by I will say this, if your cars chassis and rubber are not set up to handle 550 hp which can be easily had with only 280 intake cfm, than heads flowing more cfm will not make the car any more fun to drive on the street, or make good ET numbers at the strip.
Your better off setting the car up to be able to plant 700 hp and then pulling the heads off to port for higher power levels.
All to often folks drop in a motor making 600 hp and in short order even on a well built bottom end,drop a rod from the effects of not knowing how to tune even a 475 hp motor, do not be one of those guys!

[J.C.you]

I have ran both eheads and the HPs and in neither cheerleader camp.

The HPs are by far the best bang for the buc not counting less cost.

1.thicker deck,.... retains head gasket integrity better.

2. Better combustion chambers,....less timing for max performance. Less prone to blowing a hole in the head between the two center adjacent exhausts.

3. Out of the box HPs will easily make 700hp. If you want to talk flow numbers, I have flowed a stock HP on Meaux's sf 600 bench (TV will vouch for the accuracy of his bench) with a 2.075" intake and it went 317 cfm @ .700 lift. on a 4.125 bore.

4. The HP uses the same t&d shaft system as the e head. I have not done back to back tests, but believe the HP runs cooler also. I ran a set of roller cam HPs on a circle track app for a season and a half, never a issue, never had the head off the block, the engine is in my street car now, still going.

[mike leech]

Either head will meet your goals. I would not worry much about flow benches being "happy" as they all vary a bit. I personally think the KRE Highport will give you a little more room to grow. Obviously Eheads can be manipulated to make big hp, but starting fresh the HP is a better start.

[mysticmissle]

I was very impressed with the 330 hiports. I lthink the improved fhamber will aid the e85 application as well. Great horse power potential fire the $$ spent. I suggest a matched Victor or Northwind.

[Stan Weiss]

Originally Posted by J.C.you

I have ran both eheads and the HPs and in neither cheerleader camp.

The HPs are by far the best bang for the buc not counting less cost.

1.thicker deck,.... retains head gasket integrity better.

2. Better combustion chambers,....less timing for max performance. Less prone to blowing a hole in the head between the two center adjacent exhausts.

3. Out of the box HPs will easily make 700hp. If you want to talk flow numbers, I have flowed a stock HP on Meaux's sf 600 bench (TV will vouch for the accuracy of his bench) with a 2.075" intake and it went 317 cfm @ .700 lift. on a 4.125 bore.

4. The HP uses the same t&d shaft system as the e head. I have not done back to back tests, but believe the HP runs cooler also. I ran a set of roller cam HPs on a circle track app for a season and a half, never a issue, never had the head off the block, the engine is in my street car now, still going.

J.C.
Half of the people on PY probable do not know who Larry is and a good amount who do may know him as the author of PipeMax and just want to call him a calculator racer. But whatever comes out of Larry's shop is always excellent and you will not find anyone who is more willing than Larry to share information.

Stan

[demonic68]

Thank guys my block is a 73 455 bored 30 over so 462 with butler / ross 9.5 to1 pistons and eagle 4340 H beam rods block is being filled along with pro gram engineering 4 bolt main caps all ARP hard ware to try and keep her together as of right know stock crank but I am thinking of forking out the money for a nice forged crank. I was originally looking at the KRE hp heads with the 64 cc chambers to gain the 12.5 to 1 compression running E85 and Nitrous. As far as intake I do have a 4150 victor that I am thinking will need to port matched for the heads carb and cam I am still looking for good choices so be willing to take suggestions there to. As far as chassis it will be set up for the added power as well stiffen the chassis / currie 9 inch stock suspension IN the rear / tubular upper and lower a arms / tires in the rear are Mickey Thompson 275/60/15 drag radials I hope this enough info and please feel free to add your opinion on things.

Thank you guys again for your help and like I said 550 was the goal if it makes more power and can stay together even better not going to try and push her to much revving it to only 5 to 55

[rexs73gto]

What car body are you building the engine for. ?? Also what is it or does it weigh??

[David Holmberg]

I had the Butler 315's on my 474 with a small roller (very streetable with power brakes) a 4150 Holley and went 10.90's @ 126 with 3.42 gears and a 3500 converter in a 77 TA 3650lbs.

[demonic68]

Originally Posted by rexs73gto

What car body are you building the engine for. ?? Also what is it or does it weigh??

It's a 68 LeMans stock weight full interior / sleeper lol I will try and shave some weight here and there but it is going to be heavy unfortunately the wife said I can build it any way I want as long as it will take her and the two kids also lol. From what I have found it weighs 3'277 prolly shipped dry with out fluids but I have not had it weighed yet

[Half-Inch Stud]

Originally Posted by demonic68

Hey there guys before I take the plunge and order my heads has any one used the Buttler performance BPI ported race heads?......
Now I have worked with Buttler before And loved the customer service My hole bottom end is Buttler...So what set of heads would you suggest I would like to get the best head for my money and have it be some thing I can grow into if needed as it takes some time for me to make big purchases like this.

Spelling matters. Just saying.

[demonic68]

Originally Posted by Half-Inch Stud

Spelling matters. Just saying.

Sorry I am stuck using my phone and I try to go over every thing the best I can but some times I miss things

[TinInjun]

Originally Posted by demonic68

From what I have found it weighs 3'277 prolly shipped dry with out fluids but I have not had it weighed yet

Change the 2 to a 5 and you will have the real world weight.

[demonic68]

Originally Posted by TinInjun

Change the 2 to a 5 and you will have the real world weight.

Yeah I thought that was to good to be true.

[mike leech]

Originally Posted by Half-Inch Stud

Spelling matters. Just saying.

I see what you did there.....hole bottom is Buttler....LOL!

[demonic68]

Originally Posted by mike leech

I see what you did there.....hole bottom is Buttler....LOL!

LOL yes I did see that I completely Raped Butlers name to and forgot the w in whole

[Half-Inch Stud]

technical reading & writing skills, a curse & a blessing. HIS


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