FAQ |
Members List |
Social Groups |
Calendar |
Search |
Today's Posts |
#81
|
||||
|
||||
Quote:
.
__________________
. 1970 GTO Judge Tribute Pro-Tour Project 535 IA2 http://forums.maxperformanceinc.com/...d.php?t=760624 1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car https://forums.maxperformanceinc.com...ght=procharger Theme Song: http://www.youtube.com/watch?v=7zKAS...ature=youtu.be |
#82
|
||||
|
||||
Quote:
I think this site relates to the part that I boldfaced: http://members.uia.net/pkelley2/Overlap.html Especially at the bottom where it mentions overlap and driveability.
__________________
"No replacement for displacement!" GTOAA--https://www.gtoaa.org/ |
The Following User Says Thank You to 1968GTO421 For This Useful Post: | ||
#83
|
||||
|
||||
Quote:
If anyone out there has a report on a seat falling out of a PONTIAC Speedmaster head, not a CHEVY Speedmaster head, by all means report it here!
__________________
Randy Repp 1964 GTO "GoatZilla" 1964 GTO "Injunuity" A/FX Nostalgia Super Stock 220" Rear Engine Pontiac Powered Dragster https://www.facebook.com/PontiacSpeedShop/ https://www.facebook.com/GoatZillaRacing/ https://www.facebook.com/groups/RebuildExcitement/ https://www.facebook.com/Call1844RacersRV/ https://www.facebook.com/groups/INJUNWARS/ Last edited by GoatZillaRacing; 02-22-2021 at 04:52 PM. |
The Following 4 Users Say Thank You to GoatZillaRacing For This Useful Post: | ||
#84
|
|||
|
|||
Thanks for posting your setup and results.
I'm currently building almost the same right now so it's good to see what neighborhood it'll be in when done. Using the 112 LSA version of the same cam, 0.040 over 400, speedster heads, 10.25 to 10.5 compression. Love the big fat torque curve (great stuff for the street). |
#85
|
||||
|
||||
I have a set of E heads form one of the first runs. Hammered on them on my 455 and a solid roller, now on the 500" IA motor with an even bigger cam and have accidentally buzzed it to 7000. KRE hand ported them before they did CNC so big they have pushrod and head bolt tubes and never and issue. Dan Barton touched them up and little and added some spring locators vs just a shim like KRE had. Only issues I've had is oil drainback but most aftermarket heads of many brands do not having the large drain holes of factory iron heads.
__________________
Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#86
|
|||
|
|||
Looks like you did real well with that budget build Jeff, nice numbers. I have a feeling you wont sell the car as originally intended?
|
#87
|
||||
|
||||
In regards to all heads made off shore , I think they are all made with powered metal seats, and if so this is a short coming I would want to know about!
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#88
|
||||
|
||||
The Pontiac Speedmaster heads have Ductile Iron seats. I would think if you want to knock a product you should have facts not "I think". Everyone can "think" whatever they want, but those with the "facts" are in the ones in the "know".
__________________
Randy Repp 1964 GTO "GoatZilla" 1964 GTO "Injunuity" A/FX Nostalgia Super Stock 220" Rear Engine Pontiac Powered Dragster https://www.facebook.com/PontiacSpeedShop/ https://www.facebook.com/GoatZillaRacing/ https://www.facebook.com/groups/RebuildExcitement/ https://www.facebook.com/Call1844RacersRV/ https://www.facebook.com/groups/INJUNWARS/ |
The Following 4 Users Say Thank You to GoatZillaRacing For This Useful Post: | ||
#89
|
||||
|
||||
I've come and gone on these boards for years. This is exactly the reason why. I don't have an unlimited budget. I have priorities beyond just that Pontiac sitting in the drive.
You post what you've done. Or what you'd like to do. No matter what it is, there's always a jerk or two that tell you why your build is crap if you're not sinking 2500 or more in a set of heads. A high dollar crank or roller cam. It was asked how much better the OPs engine would run with KRE heads etc. How much more power would that garden variety dime a dozen SBC put out if you put on a twin turbo set up? Comparably, I'm not impressed with your combo either. We all do things according to a budget or a planned outcome. Not necessarily to be the fastest car in the state. I think it's pretty freakin' sad when someone that's been around long enough to be a so called "ultimate warrior" would belittle someone like that. Thanks OP for your post. It'll be a fun car! I guess I had hoped it might be different this time. I've got no desire to be affiliated with self important, "my car is better than your car" simpletons. |
The Following 3 Users Say Thank You to BDH79TA For This Useful Post: | ||
#90
|
|||
|
|||
steve25
"It's not so much the seats and there press fit into the ,its how hard the Aluminum as a whole has been tempered which aids in supporting the seats above a certain amount of spring seat pressure." "In regards to all heads made off shore , I think they are all made with powered metal seats, and if so this is a short coming I would want to know about!" PJ - Where do you come up with this crap? How do feel about conspiracy theories? How many Speedmaster heads have you purchased and tested in your laboratory in securing such results? I wanna see da facts. Arghhhh. |
#91
|
|||
|
|||
Quote:
|
#92
|
||||
|
||||
Quote:
An area where incorrrect advice can be given is timing. Unless you have set the crank at true TDC and set the timing cover and balancer in place and verified marks, you are only guessing your numbers are correct. Almost always see an error with the combination of new covers and/or balancers being up to 4° off. Old factory stuff is much closer but still can be 2° either way. Doesn't matter if setting timing on the dyno since engine will be set at optimum level, but the reported timing can be much different than actual. So the 28°, 30°, or 32° for Kaufman's might physically be very close to the same timing. Some of the first gen Avenger carbs had problems, but ran good at full throttle where they straightened out. Idle and off-idle transition sucked on some of them. Have seen some errors on the same dyno when the strain gauge went out of whack in the middle of the day. Don't know the proper name of that piece of equipment, but about an hours worth of down time got the replacement installed by their crew and we were back making pulls. From what I've seen just normal wear and physical variances will change readings no matter how precise the software happens to be.
__________________
Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon. |
#93
|
||||
|
||||
Quote:
Stan
__________________
Stan Weiss/World Wide Enterprises Offering Performance Software Since 1987 http://www.magneticlynx.com/carfor/carfor.htm David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software http://www.magneticlynx.com/DV Download FREE 14 Trial IOP / Flow Software http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php Pontiac Pump Gas List http://www.magneticlynx.com/carfor/pont_gas.htm Using PMD Block and Heads List http://www.magneticlynx.com/carfor/pont_pmd.htm |
#94
|
||||
|
||||
I'm getting ready to dyno another motor with a set of speedmaster heads
that I bought from Randy did my own porting to them too. As far as the quality of the heads compaired to the eddy's, I pic the speedmaster heads. I'll post the dyno results soon. GT. |
#95
|
||||
|
||||
Spring locators are a must, especially on aluminum heads, surprised they don't all come with them already installed.
I like the fact that there is a new kid on the block, maybe this will further pressure Edelbrock etc to make pricing more competitive. Still blows me away at the pricing disparity. Gouging is the only plausible comment on how pricing is set. A bare chebbie SpeedMaster head is $280, $600 for an E-head. $730 for a Pontiac, and that's since the price drop. Let's hope they drop them more. .
__________________
. 1970 GTO Judge Tribute Pro-Tour Project 535 IA2 http://forums.maxperformanceinc.com/...d.php?t=760624 1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car https://forums.maxperformanceinc.com...ght=procharger Theme Song: http://www.youtube.com/watch?v=7zKAS...ature=youtu.be |
The Following User Says Thank You to HWYSTR455 For This Useful Post: | ||
#96
|
|||
|
|||
Quote:
Looking forward to your results! Murf Sent from my iPhone using Tapatalk Pro |
#97
|
||||
|
||||
Thanks for taking the time to post your dyno results. I think you did very well on your build but I have always been partial to 400's so I am biased.
Great work! |
#98
|
|||
|
|||
Quote:
Related to the OP: Thanks for sharing the results of your build. I think it's very helpful and cool to have this kind of information shared to the community and I hope that more people will share the results of their builds no matter what components were used or what the results were.
__________________
---------------------------- '72 Formula 400 Lucerne Blue, Blue Deluxe interior - My first car! '73 Firebird 350/4-speed Black on Black, mix & match. |
The Following User Says Thank You to Will For This Useful Post: | ||
#99
|
||||
|
||||
[QUOTE=lust4speed;6229164]Way I understand it is getting close (.060") to coil bind dampens high RPM harmonics. There's some cool high speed videos showing valve springs dancing around, but the harmonics occur way over our RPM range.
I'm trying to find the best valve spring for my cam (5500 rpm max?) and am going nuts trying to figure the lift vs coil bind vs the crazy harmonics. What is the rpm range that I should be real concerned about on this. Thank you.
__________________
"No replacement for displacement!" GTOAA--https://www.gtoaa.org/ |
#100
|
|||
|
|||
Quote:
Pontiac heads go for about $200 more than the equivalent SBC head, based on a quick look at Summit's website. If you keep paying it, they'll keep charging it. Unfortunately, our community is significantly smaller than the Chevy folks with limited options. |
Reply |
|
|