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Ported 915 iron heads flow #'s- Whatcha think #267278 03/26/09 12:38 PM 03/26/09 12:38 PM
Joined: Jul 2005 Posts: 336 Creston, Iowa 3 340man4ever OP enthusiast
340man4ever OP enthusiast 3 Joined: Jul 2005 Posts: 336 Creston, Iowa	I just got back a set of ported 915's that I bought used. I had them freshened up, while the shop had them they threw them on the bench. What do you think? Numbers are at 28" .100 IN 74.4 / EX 57.9 .200 IN 148.9/ EX 99.9 .300 IN 208.9/ EX 135.6 .400 IN 268.9/ EX 170.3 .500 IN 258.2/ EX 191.9 .600 IN 262.9/ EX 205.3 .700 IN 258.2/ EX 207 These heads going on zero deck, stock stroke 440 with MOPAR 590 solid cam, worked over M1 single plane intake, 850HP annular booster carb, and pro parts big tube headers. Any comments? What kind of power would you feel this would make? Last edited by 340man4ever; 03/26/09 01:23 PM. Curator at Adams County Speed Shop

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: 340man4ever] #267279 03/26/09 01:39 PM 03/26/09 01:39 PM
Joined: Jan 2003 Posts: 3,031 Erda, UT 67Charger master
67Charger master Joined: Jan 2003 Posts: 3,031 Erda, UT	You'll be looking at 450 - 460 HP. The heads are still going to be the cork in the system. I went from mildy ported 915's to Eddie RPM's out of the box and picked up 1/2 second. You've got plenty of cam and intake and well balanced carb. The duration of the cam should help the small ports, but just remember you aren't using it's full potential. What is your compression? 11.33 @ 118.46 on motor 10.75 @ 125.35 w/ a little spray Now, high Speed Open Road Racing - Silver State Classic Challenge, Nevada Open Road Challenge, Big Bend Open Road Race Rocky Mountain Race Week 2020, 2022 2.0, Sick Week 2023

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: 67Charger] #267280 03/26/09 01:54 PM 03/26/09 01:54 PM
Joined: Jul 2005 Posts: 1,472 Overland Park, KS. J Joshs68 pro stock
Joshs68 pro stock J Joined: Jul 2005 Posts: 1,472 Overland Park, KS.	Im gonna say 525hp

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: 67Charger] #267281 03/26/09 02:06 PM 03/26/09 02:06 PM
Joined: Jul 2005 Posts: 336 Creston, Iowa 3 340man4ever OP enthusiast
340man4ever OP enthusiast 3 Joined: Jul 2005 Posts: 336 Creston, Iowa	The compression will be 11.25:1 Curator at Adams County Speed Shop

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: 340man4ever] #267282 03/26/09 02:06 PM 03/26/09 02:06 PM
Joined: Jan 2003 Posts: 24,562 Brookeville, Md Mr.Yuck Not enough dumb comments...yet
Mr.Yuck Not enough dumb comments...yet Joined: Jan 2003 Posts: 24,562 Brookeville, Md	good. I have 516's (2.14-1.81) They flow close to those... 260-190 I'll be running the 528 solid in a 440-6.

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: Mr.Yuck] #267283 03/26/09 02:36 PM 03/26/09 02:36 PM
Joined: Jan 2003 Posts: 4,296 Chicago, IL TonyS451 master
TonyS451 master Joined: Jan 2003 Posts: 4,296 Chicago, IL	Those are some pretty good flowing 915's. That combo might make 550hp. 2 kids and a dog

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: TonyS451] #267284 03/26/09 03:34 PM 03/26/09 03:34 PM
Joined: Dec 2005 Posts: 1,495 Shelby mi. J JAKE68 pro stock
JAKE68 pro stock J Joined: Dec 2005 Posts: 1,495 Shelby mi.	Almost exact same combo I went 11.42@118 in a 3800 lb. car threw muflers and with m&h street slicks. Jake JAKES AUTOMOTIVE

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: JAKE68] #267285 03/26/09 03:54 PM 03/26/09 03:54 PM
Joined: Feb 2005 Posts: 375 NW Minnesota M Maximus_Wedges enthusiast
Maximus_Wedges enthusiast M Joined: Feb 2005 Posts: 375 NW Minnesota	Thoes are good 915's. 915's are just not the greatest in this day and age as far as bang for the Buck (MHO). They'll be fine. I ran them on my 483 B stroker. MP 620 cam and a 950 Alky carb. They made power to about 5700 and peaked @ 550HP. TQ peaked @ 4000. Not enough head but run them if you got them.

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: JAKE68] #267286 03/26/09 04:04 PM 03/26/09 04:04 PM
Joined: Feb 2006 Posts: 1,949 land of 10,000______'s B BDS871Cuda top fuel
BDS871Cuda top fuel B Joined: Feb 2006 Posts: 1,949 land of 10,000______'s	Quote: Almost exact same combo I went [Email]11.42@118[/Email] in a 3800 lb. car threw muflers and with m&h street slicks. Jake I see alot of guys running this combo. My 65 Fury (4000 lbs) Line performance ported iron 452's. Ultradyne .590-.613 cam, 825 race Demon, M-1 intake, MSD, 440, car ran 11.16 at 118. Your combo should make well over 550 HP. Snap your neck, mega G-force launch, is all I want!

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: BDS871Cuda] #267287 03/26/09 04:44 PM 03/26/09 04:44 PM
Joined: Jul 2008 Posts: 51 Cumberland, MD S Supersonic member
Supersonic member S Joined: Jul 2008 Posts: 51 Cumberland, MD	I have 915 heads on my dart, fully ported and polished, it ran a 10.38 @ 127 last fall. It ran the best shifting at 6, at 6500 it only ran 10.50's

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: 340man4ever] #267288 03/26/09 08:52 PM 03/26/09 08:52 PM
Joined: Jan 2003 Posts: 14,506 So. Burlington, Vt. F fast68plymouth I Live Here
fast68plymouth I Live Here F Joined: Jan 2003 Posts: 14,506 So. Burlington, Vt.	that combo should make 525-550hp easy. 68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: fast68plymouth] #267289 03/26/09 09:53 PM 03/26/09 09:53 PM
Joined: Aug 2003 Posts: 3,245 Between a rock & a hard place C cudadoug master
cudadoug master C Joined: Aug 2003 Posts: 3,245 Between a rock & a hard place	FWIW - I had a 906's that had a flow sheet nearly identical to his and they went high 10.30s @ 128 on a TRW 440 shortblock with a small roller @ 3,240 lbs. In the dog summer days at Sac it would go .40's @ 127 like clockwork. Yea, it was a ladder bar car with a big tire, race converter, but the point is those "ol skool" heads did a good job. With it hooking and a converter that's even close it should get in the 10's! Last edited by cudadoug; 03/26/09 09:55 PM.

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: cudadoug] #267290 03/26/09 10:51 PM 03/26/09 10:51 PM
Joined: Jul 2005 Posts: 336 Creston, Iowa 3 340man4ever OP enthusiast
340man4ever OP enthusiast 3 Joined: Jul 2005 Posts: 336 Creston, Iowa	The combustion chambers are presently 74cc giving me 11.25:1 compression. What kind of a gain would you anticipate if I milled them to bring it to 12:1. Would it be worth it? Would I be begging the heads to crack by doing that? Thanks in advance Curator at Adams County Speed Shop

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: 340man4ever] #267291 03/27/09 12:08 AM 03/27/09 12:08 AM
Joined: Apr 2007 Posts: 1,165 Central Ohio, USA Bigbeep super stock
Bigbeep super stock Joined: Apr 2007 Posts: 1,165 Central Ohio, USA	Wow, Almost the same combo I have run the last 3 years. I run a set of 915's which are not completely hogged out, but do have the 1.81 2.14 valves. Same cam, same intake, 750 annular discharge holley, trw 11.5 slugs on stock rods, crane 1.6 roller rockers. SS springs, leaving with a brake. 10.644 with 1.401 60 ft. 122 mph in a 3335 lb a-body. Enjoy the trouble free combo.

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: fast68plymouth] #267292 03/27/09 02:12 AM 03/27/09 02:12 AM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	Quote: that combo should make 525-550hp easy. I agree with this. I run 906 heads I did some port work on myself on the mild 440 in my 63. I use the MP .557 cam and run 10.0 comp. That way it runs fine on 92 pump with the quench pad pistons I used. This has pushed my 3700 lb 63 to 11.50's @ 116 so far and I have yet to do any serious tunning on the car. I drive the car way more then I have raced it and the calculator I used says I push 475 to 500 hp so I see 525 to 550 in your combo. Go for it and have fun. Ron Last edited by 383man; 03/27/09 02:14 AM.

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: 383man] #267293 06/09/10 12:44 AM 06/09/10 12:44 AM
Joined: Jul 2005 Posts: 336 Creston, Iowa 3 340man4ever OP enthusiast
340man4ever OP enthusiast 3 Joined: Jul 2005 Posts: 336 Creston, Iowa	Update- took completed engine to Dave Bruns (Mid America Racing Engines, Washington Ia) shop and had motor broke in and dyno tested. Threw a Wilson Manifolds tapered 1.5" combo spacer under the carb for the tests. Best ignition timing was 38 total. Motor made 561 HP at 6200. Best torque was 520 at 4900. Threw a 1050 Dominator w/ shear plate and small phenolic spacer on it for kicks. Motor made 565 Hp and 517 ft/lbs. We used Sunoco 110 for fuel, NGK plugs gapped at .035, and FireCore 50 plug wires. Curator at Adams County Speed Shop

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: 340man4ever] #267294 06/09/10 12:57 AM 06/09/10 12:57 AM
Joined: Aug 2003 Posts: 3,245 Between a rock & a hard place C cudadoug master
cudadoug master C Joined: Aug 2003 Posts: 3,245 Between a rock & a hard place	Nevermind... Last edited by cudadoug; 06/09/10 12:58 AM.

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: 340man4ever] #267295 06/09/10 06:25 AM 06/09/10 06:25 AM
Joined: Jan 2003 Posts: 75,058 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,058 U.S.S.A.

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: JohnRR] #267296 06/09/10 06:43 AM 06/09/10 06:43 AM
Joined: Jul 2005 Posts: 1,472 Overland Park, KS. J Joshs68 pro stock
Joshs68 pro stock J Joined: Jul 2005 Posts: 1,472 Overland Park, KS.	That's great! You may have to change your screen name now. Guess there is still a place for old school.

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: Joshs68] #267297 06/09/10 07:59 AM 06/09/10 07:59 AM
Joined: Jan 2003 Posts: 4,066 Shelby Twp. Mi HardcoreB master
HardcoreB master Joined: Jan 2003 Posts: 4,066 Shelby Twp. Mi	Good job, that will be a good running motor!

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: HardcoreB] #267298 06/09/10 11:00 AM 06/09/10 11:00 AM
Joined: Apr 2010 Posts: 24 Modesto, CA Chris_Holton member
Chris_Holton member Joined: Apr 2010 Posts: 24 Modesto, CA	I am doing a set of 915's right now. I havent ported old school heads in 10 years, now I have two sets to do, I will post results in a few days....

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: 340man4ever] #267299 06/09/10 02:43 PM 06/09/10 02:43 PM
Joined: Aug 2003 Posts: 43,228 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,228 Bend,OR USA	Quote: I just got back a set of ported 915's that I bought used. I had them freshened up, while the shop had them they threw them on the bench. What do you think? Numbers are at 28" .100 IN 74.4 / EX 57.9 .200 IN 148.9/ EX 99.9 .300 IN 208.9/ EX 135.6 .400 IN 268.9/ EX 170.3 .500 IN 258.2/ EX 191.9 .600 IN 262.9/ EX 205.3 .700 IN 258.2/ EX 207 These heads going on zero deck, stock stroke 440 with MOPAR 590 solid cam, worked over M1 single plane intake, 850HP annular booster carb, and pro parts big tube headers. Any comments? What kind of power would you feel this would make? My comments, three things wrong, iron heads, Mopar 590 cam and annular boosters Is this a race only or dual duty motor and car? If it is a dual duty, be careful on the fuel, the iron close chamber heads will detonate very easily with the wrong fuel and tune up That being said I have used one of the older 590 cams one time , that motor had "346" heads and is still running in a bracket car after six or seven yaers of being race 5 to 15 times each year on race fuel good luck BTW, I saw the same results on that bracket motor on the engine dyno testing a Carb shop custom 1050 Dominator with a tapered dominator adapter against a BG 850 Street Demon on a TM7 intake, we later switch the intake to a 4500 Team G intake and a stock Holley 9375 1050 Dominator and saw a 30 HP increase with the Team G intake and no adapter Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: Cab_Burge] #267300 06/09/10 06:03 PM 06/09/10 06:03 PM
Joined: Sep 2004 Posts: 6,906 IL, Aurora A ademon master
ademon master A Joined: Sep 2004 Posts: 6,906 IL, Aurora	Whats the problem with annular booster

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: ademon] #267301 06/10/10 12:58 AM 06/10/10 12:58 AM
Joined: Jul 2005 Posts: 336 Creston, Iowa 3 340man4ever OP enthusiast
340man4ever OP enthusiast 3 Joined: Jul 2005 Posts: 336 Creston, Iowa	Cab- this is for a bracket drag car. It will see little if any street duty. I wanted to see what an old school "state of the art circa 1978" build could do. I consider myself a Mopar "purist" Good bad or indifferent, that was the thought process.......LOL Curator at Adams County Speed Shop

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: 340man4ever] #267302 06/10/10 01:09 AM 06/10/10 01:09 AM
Joined: Dec 2007 Posts: 266 iowa R rook440 enthusiast
rook440 enthusiast R Joined: Dec 2007 Posts: 266 iowa	pretty good numbers .....cant wait to see it in the dart .....what year did you start building that engine ???? Do you like flat tappet cams ....??? this build and the day at the dyno really got me enthused ..... I still owe you one ,,,,,rook

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: rook440] #267303 06/10/10 01:18 AM 06/10/10 01:18 AM
Joined: Jul 2005 Posts: 336 Creston, Iowa 3 340man4ever OP enthusiast
340man4ever OP enthusiast 3 Joined: Jul 2005 Posts: 336 Creston, Iowa	I started the engine build in 1978 LOL........ Flat tappet cams and iron heads will rise again....I can feel it............. Thanks for your help, support and friendship Rook Mr Looney Curator at Adams County Speed Shop

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: 340man4ever] #267304 06/10/10 01:20 AM 06/10/10 01:20 AM
Joined: Jul 2005 Posts: 336 Creston, Iowa 3 340man4ever OP enthusiast
340man4ever OP enthusiast 3 Joined: Jul 2005 Posts: 336 Creston, Iowa	If you owe me one......I owe you many........... Curator at Adams County Speed Shop

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: 340man4ever] #267305 06/10/10 08:27 AM 06/10/10 08:27 AM
Joined: Jul 2006 Posts: 9,366 Lehigh Acres, Florida rickstershemi master
rickstershemi master Joined: Jul 2006 Posts: 9,366 Lehigh Acres, Florida	Quote: Flat tappet cams and iron heads will rise again....I can feel it............. Yep, I'm excited to get going on our 318/390 Stroker Max Ported J-Heads, 11-1 Compression Tunnel Ram, Extremely Radical Hydraulic Flat Tappet Cam, 4-Speed Rickster

Re: Ported 915 iron heads flow #'s- Whatcha think [Re: rickstershemi] #267306 06/10/10 10:52 AM 06/10/10 10:52 AM
Joined: Jul 2005 Posts: 336 Creston, Iowa 3 340man4ever OP enthusiast
340man4ever OP enthusiast 3 Joined: Jul 2005 Posts: 336 Creston, Iowa	Quote: Quote: Flat tappet cams and iron heads will rise again....I can feel it............. Yep, I'm excited to get going on our 318/390 Stroker Max Ported J-Heads, 11-1 Compression Tunnel Ram, Extremely Radical Hydraulic Flat Tappet Cam, 4-Speed Rickster That sounds like a fun build up...... Very cool Curator at Adams County Speed Shop

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