Hey Thumper460 read here

[1BAD89GT]

I dunno if you remember me or not(My89GT) from a while back with all the old 289 rod topics about making more HP and compression.But anyways Ive made a few changes on this motor and i got this new program a few weeks ago Called Engine Analyzer Pro. from http://www.performancetrends.com/eap.htm supposed to be the best analyzer on the market and for 500$ i hope so.But i had been thinking about upgrading my heads to some Windsor Jr heads and so i ran a some engine test after Visiting your site to do some comparisons.First off i ran my current setup and it came to pretty much exactly the same results as my dyno pulls showed 321hp@5500rpm flywheel and 351ftlbs [email protected] i ran a few test's that might be some intresting reading to you.

1st Test (My current Setup But my Heads ported to your Specs.)
Heads:E7TE heads Ported with 1.78 Int and 1.5Ex valves.
if you look at current-ported Heads.jpg Note:Vol eff% and Air/Fuel mix qality
Pkhp 343hp@5500rpms and maxtq 356ftlbs@4500rpms

2nd test (My current setup but heads ported to your specs with 1.84int 1.6ex)
again look at current-ported with 1.84int 1.6ex.jpg again Note:Vol eff% and Air/Fuel mix qality
Pkhp 339@5500rpms and maxtq 337ftlbs@4500rpms

3rd test (My current setup with Windsor jr Heads Bolted on.)
again look at current with windsor jr heads.jpg in next post, again Note:Vol eff% and Air/Fuel mix qality
Pkhp 325@5500rpms and maxtq 333ftlbs@4500rpms

4th test (My setup Stock ported with same vales as test #1 longtubes and 3"exhaust)
again look at current motor-ported heads same vales-longtubes-3inexhaust.jpg in next post, again Note:Vol eff% and Air/Fuel mix qality
Pkhp 369@5500rpms and maxtq 363ftlbs@4500rpms.

Conclusion:With my Current setup,my stock heads with just a slightly Bigger Ex valve and Fully Ported is Very Effecient With The air Velocity Being kept up,add headers and Biggers Exhaust to get the Air out as fast as its coming in and you have some Big HP gains.

 

[1BAD89GT]

well cant post last pic test 4 not enough space so ill copy info in.

-------1000 1500 2000 2500 3000 3500 4000 4500 5000 5500
VolEff% 33.5 48.3 58.7 70.9 82.3 93.0 99.4 102.1 102.9 103.5
A/F Qal 32.4 60.9 79.9 95.1 100 100 100 100 100 100

 

[mike keirstead]

ALRIGHT THUMPERS......Stomp those Windsor JRs!!!!!

 

[loboboy]

First and foremost, everything I hear about Thumper heads is good and I respect that. But I have several questions 1, does the program have entries to enter into the combo bigger t/b and inj, better intake and what size cam. All of these factors have to come into play when building an engine(someone correct me if I am wrong here). If you take a completely stock motor and install new heads without upgrading the intake and the exhaust you will se minimal improvements in the power. Now, install the heads with the correct selection of intake cam and t/b and inj and I would have to see the proof that the stock heads are better. Just my .02 and if I am wrong please edjumucate me on the subject. It sounds like a really cool program though.

 

[1BAD89GT]

First and foremost, everything I hear about Thumper heads is good and I respect that. But I have several questions 1, does the program have entries to enter into the combo bigger t/b and inj, better intake and what size cam. All of these factors have to come into play when building an engine(someone correct me if I am wrong here). If you take a completely stock motor and install new heads without upgrading the intake and the exhaust you will se minimal improvements in the power. Now, install the heads with the correct selection of intake cam and t/b and inj and I would have to see the proof that the stock heads are better. Just my .02 and if I am wrong please edjumucate me on the subject. It sounds like a really cool program though.

Yes You have to enter in every Single Little detail for Block,heads,Intake,Exhaust,Cam/valve train,Supercharger and Nitrous if applicable,Down to what the temperature is outside the humidity dewpoint what octane gas your running,your timing etc.and its a great program but its not made for those who dont know much about how engines work,but just know how to bolt stuff on...if something doesnt match up or what not it comes up with errors.it makes you be extremely exact...and as i said in the beginning this was for my current engine setup.

 

[thumper460]

heads...

Hey how is that engine running??? I have done more than a few, and even sent the parts and helped build one in England, hopefully the Brit will have his running in a few months!!Love the longer rod... the engine seems to work with less effort...huh??[COLOR=Navy

[COLOR=Navy]Cool on the heads up... head stuff!! LOL It really helps the guys out when they see the HP can be there without having to spend the 1200.00 or so for aftermarket!! I think that is one of the few good ideas about this forum... ideas and info to pass around!! Cool??[/COLOR]

Have fun this year and rock the world!! cool??

Just me.....................................

Thumper

 

[1BAD89GT]

Hey how is that engine running??? I have done more than a few, and even sent the parts and helped build one in England, hopefully the Brit will have his running in a few months!!Love the longer rod... the engine seems to work with less effort...huh??[COLOR=Navy

[COLOR=Navy]Cool on the heads up... head stuff!! LOL It really helps the guys out when they see the HP can be there without having to spend the 1200.00 or so for aftermarket!! I think that is one of the few good ideas about this forum... ideas and info to pass around!! Cool??[/COLOR]

Have fun this year and rock the world!! cool??

Just me.....................................

Thumper

Well what impresses me the Most is the fact its theoretically possible for my engine to make more HP with stock ported heads with stock valves than Bolting on a set of Bigger Windsor Jr head with Bigger Valves (18HP more over the HP gains from the Windsor jrs) Just through Effeciency and Air Velocity.And as far as the Engine shes running great but im all bout trying to get even close to the results of test 4 with my changes

 

[loboboy]

I have another question, what difference will that make with say a 347 stroker. I see you have a 306 but will the stock ported heads still compete with aftermarket on a 347 or 331 and so on? Let us know because I am still in the research stage of building my engine and if I don't have to spend the money I won't. The combo I am thinking right now is a 347 AFR 185's Ed Curtis spec cam with a spyder intake 42lb inj and 75MM T/B with the AEM engine management. In fact the AEM is on its way and I am getting ready to order the intake and the induction parts.

 

[thumper460]

There are a few 347s in the 11s with ported stock valve heads.... ( n/a also) remember even with more cubes... velocity is a major key in building torque and HP. whether you get a big valve head and build velocity thru the cam , or compression... it is all around speed of the air!! just a thought...

Just me...............................

Thumper

 

[1BAD89GT]

I have another question, what difference will that make with say a 347 stroker. I see you have a 306 but will the stock ported heads still compete with aftermarket on a 347 or 331 and so on? Let us know because I am still in the research stage of building my engine and if I don't have to spend the money I won't. The combo I am thinking right now is a 347 AFR 185's Ed Curtis spec cam with a spyder intake 42lb inj and 75MM T/B with the AEM engine management. In fact the AEM is on its way and I am getting ready to order the intake and the induction parts.

If you want Private Message me with what your wanting to build with all the specs and i will run it and give you the results...Be extremely detailed...if i need anything that you forgot ill message you back.

 

[NoSLowFiveO]

gotta love Thump's heads. they are the best perforemance to money mod ive purchased for money stang... by far. keep up the good work mike!

 

[billetunderwear]

Hey Thumper,

I sold the heads and cam to a friend of mine here in town. He's putting everything on a stock shortblock with 190k miles... hopefully it will stay running long enough for me to go for a ride in it and let you know my impressions. Right now he's off serving in the army, so I'll just have to wait.

 

[1BAD89GT]

I have another question, what difference will that make with say a 347 stroker. I see you have a 306 but will the stock ported heads still compete with aftermarket on a 347 or 331 and so on? Let us know because I am still in the research stage of building my engine and if I don't have to spend the money I won't. The combo I am thinking right now is a 347 AFR 185's Ed Curtis spec cam with a spyder intake 42lb inj and 75MM T/B with the AEM engine management. In fact the AEM is on its way and I am getting ready to order the intake and the induction parts.

Lets Put it this way my Dad had his just had his 331 stroker with Windsor Jr Heads that are lightly Ported,was just Dyno's by Boyds Machine and Performance shop it Dynod 385HP@6500RPMS and 361ftlbstq@4500rpms
I ran his specs in Engine analyzer and it came out almost Identical it said 387hp@6500roms and 361ftlbstq@4500 rpms.I compared it to my setup with test #4 modifications 369HP@5500RPMS and 363ftlbstq@4500rpms and compared our charts my E7TE heads on my Motor were much more effecient up to 5500rpms than his Windosrs on his 331 but after 5500rpms my E7TE dropped of and The Windsor were still fairly effecient and my A/F Quality was much better up to 5500rpms.

 

[1BAD89GT]

Also anyone wanting there Engine Ran on Performance trends Engine Analyzer can send me a PM with you specs or post them on this thread.
Heres a run down of what i need.

Engine info:
type of Engine:302,306,331 etc etc
Bore size stroke
#of cylinder if other than a V8
What Rods and length of Rods
What Accesories your running on your engine.
I need to know about your crankcase(stock,low windage?scrapers?etc)
also what type of Bearings and Pistons(File fit,Low friction,Race?etc)

Heads:
what type of Heads.
Compression ratio if you dont know i need extra info (chamber CC's,Piston CC's dome dished flatop etc,Headgasket thickness and Deck Height clearence)
Valve Sizes
Port Volume
If there Ported or out of the box if ported i need to know what they flow or a really good guess but that will affect accuracy.
and anyother info you can think of about your heads.

Intake:
I need to know all about your intake system...carbed? Fuel injected?
If carbed what carb and what size,what Jets your running?Spacer plates?
what size fuel lines your running.more if you think of it.
if Fuel injected what Intake stock or ported if ported i need some flow figure or some good approximation.what size injector what fuel pump?what size throttle body?what size and Brand of MAF,Cold Air stock Air box? etc.
anything else you can think of.

Exhaust;
what Kind of header brand and if longtubes or shorties etc.
What size of Header,Diameters of tubes,Primary lengths,Collector Size and lenghts,cats?
what Kind of Mufflers and what size.

Cam/Valve train
All your cam specs as you would see them on Cam card
also if your cam is retarded or advanced and how many degrees
Type of Valve springs and specs.

Power adders:
all your Specs.

Running conditions:
your current temperatures or i can run it at room temperature or standard preferred Dyno testing temps to simulate engine on a dyno.
what octane of gas your are running.
Timing and specs on Ignition system.
what you want your starting RPM at

well that about all i can think of at moment.