Re: G BOB'S engine build w/pics and some other tid bits
[Re: Brian Hafliger]
#224044
02/20/09 01:08 AM
02/20/09 01:08 AM
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Brian Hafliger
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Pushrods are 9.500" long. As you can see, the ex. ports are not much larger than OOTB! This thing went 284 on my bench!! And the mid lift flow is just as impressive. If you see this port in person, you'd say "no way" it could flow that. But it does!
There's enough room for a 1.625 spring too, which would be a good option for larger cams. I think the spring pockets will accept that but I haven't actually checked that out yet.
You really have to cut on the head to relive it for 3/8 pushrods and 1.7 rockers. Too bad Edelbrock doesn't step up and machine/cast these with larger holes/enlongated holes to allow more up to date ratios!! I mean, 1.7 is small by today's standards!!!!!!!!
Really if they did that, this head would be a bolt on killer. I think even 1.6 ratio would need clearancing. That's really too bad. With these heads, sheet metal valve covers are pretty much a must from what I can tell. And they will need some minor clearancing as well... But having said all that, I'm hoping these heads deliver based on flow #'s, and air speed in the ports. Time will tell......
Brian
Brian Hafliger
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Re: G BOB'S engine build w/pics and some other tid bits
[Re: Brian Hafliger]
#224045
02/20/09 02:48 AM
02/20/09 02:48 AM
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Joined: Feb 2007
Posts: 316 Utah
dragnduster
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Quote:
You really have to cut on the head to relive it for 3/8 pushrods and 1.7 rockers. Too bad Edelbrock doesn't step up and machine/cast these with larger holes/enlongated holes to allow more up to date ratios!! I mean, 1.7 is small by today's standards!!!!!!!!
Really if they did that, this head would be a bolt on killer. I think even 1.6 ratio would need clearancing. That's really too bad. With these heads, sheet metal valve covers are pretty much a must from what I can tell. And they will need some minor clearancing as well... But having said all that, I'm hoping these heads deliver based on flow #'s, and air speed in the ports. Time will tell......
Brian
Brian, my victors needed quite a bit of clearancing for 3/8" push rods with 1.6 rockers. But then again mine were some of the early victor heads and hopefully they are better now. BTW G Bob"s engine is looking good . Dave
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Re: G BOB'S engine build w/pics and some other tid bits
[Re: Brian Hafliger]
#224048
02/20/09 04:04 PM
02/20/09 04:04 PM
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Joined: Dec 2004
Posts: 1,717 Rancho Cucamonga, Calif.
PUNK
top fuel
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Brian, isnt it ashamed that the manufacturer could have just done the holes from the git go. I honestly think that even a 1.5 rocker would have to have the pushrod holes opened up for clearancing. The Victor headed engine I built used the same rockers you have and I had enough aluminum shavings on the ground to sweep up and cast another head. Almost. I really dont understand why the manufacturer did it that way. Oh well. G-Bobs Hotrods gonna be killer now. I read somewhere that for a nine second car that a diaper was involved....Is that for the engine or for Glen? LOL!
10.53 @ 125mph. 1.37 60 foot. Caltracs and Monoleafs, AFCO shocks.
Heads by INDIO MOTOR MACHINE; IMM. CP Pistons, PC Carbs.
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Re: G BOB'S engine build w/pics and some other tid bits
[Re: PUNK]
#224049
02/20/09 04:49 PM
02/20/09 04:49 PM
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Joined: Jan 2003
Posts: 9,945 Weddington, N.C.
Streetwize
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Looks great! My only reservation about the 1.7's and the .700 lift/roller spring pressures is that you're really at the threshhold of where milling the pedestals and going to the billet block (W2 race style) shaft hold downs might pay off. The Eddie pedestals don't seem quite as beefy as the Indy's (from what I've seen) and the Edelbroack aluminum seems a tad softer and a little bit more brittle. Not trying to be an alarmist it's just with high rpm/spring pressures the billet blocks are relatively cheap insurance and I believe they enhance the valvetrain stability.
Last edited by Streetwize; 02/20/09 04:50 PM.
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Re: G BOB'S engine build w/pics and some other tid bits
[Re: Streetwize]
#224050
02/20/09 06:43 PM
02/20/09 06:43 PM
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Joined: Jan 2003
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Brian Hafliger
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Quote:
Looks great!
My only reservation about the 1.7's and the .700 lift/roller spring pressures is that you're really at the threshhold of where milling the pedestals and going to the billet block (W2 race style) shaft hold downs might pay off. The Eddie pedestals don't seem quite as beefy as the Indy's (from what I've seen) and the Edelbroack aluminum seems a tad softer and a little bit more brittle.
Not trying to be an alarmist it's just with high rpm/spring pressures the billet blocks are relatively cheap insurance and I believe they enhance the valvetrain stability.
I guess with what very little experience I have with these Victor heads, anything is possible....but I'm not in the least worried about valve train stability with the parts we're using. I'm not a metalurgist by any means, so I can't say for sure if these castings are weaker, or softer than Indy's, but they're a helluva lot better quality than Indy's from what I can tell!!
And the core shift in these heads is very very minimal. Indy's are all over the place.
I will say that the installed height could be more with these heads, and the pushrod holes could be alot better placed. I think Indy had plenty of problems with their heads when they first released them years ago so it's to be expected...even today. With my valve job, and .060 locaters for the springs, the installed height with Comps tool steel retainers is 1.940 with std. 611 keepers. That's not too bad. Brian
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Re: G BOB'S engine build w/pics and some other tid bits
[Re: Brian Hafliger]
#224051
02/20/09 08:14 PM
02/20/09 08:14 PM
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Joined: Jan 2003
Posts: 9,945 Weddington, N.C.
Streetwize
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Brian, I'm with you on the pushrods...I believe the thing is they're probably a lot better fit with a flat tappet cam than with the the longer lifters/shorter pushrods of a roller. i would up bridgeporting my Chapmans i got tired of "whittling" with a carbide Hey it could have been worse, with a low deck (like mine) the pushrod angle is even MORE extreme FWIW, I wasn't being at all critical of the Vics, they look like nice heads and look forward to getting a pari someday....my only thought was with solid roller springs and high RPM the one piece billet blocks really make for a stable platform and it's a relatively affordable upgrade for people to consider. Brian, I always enjoy and appreciate your posts, informative and well-written!!!
Last edited by Streetwize; 02/20/09 08:18 PM.
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Re: G BOB'S engine build w/pics and some other tid bits
[Re: Streetwize]
#224052
02/20/09 09:28 PM
02/20/09 09:28 PM
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Joined: Jan 2003
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Brian Hafliger
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Quote:
Brian,
I'm with you on the pushrods...I believe the thing is they're probably a lot better fit with a flat tappet cam than with the the longer lifters/shorter pushrods of a roller.
i would up bridgeporting my Chapmans i got tired of "whittling" with a carbide
Hey it could have been worse, with a low deck (like mine) the pushrod angle is even MORE extreme
FWIW, I wasn't being at all critical of the Vics, they look like nice heads and look forward to getting a pari someday....my only thought was with solid roller springs and high RPM the one piece billet blocks really make for a stable platform and it's a relatively affordable upgrade for people to consider.
Brian, I always enjoy and appreciate your posts, informative and well-written!!!
Thanks!! I wasn't trying so much to defend them as much as I wanted guys to know the reality of these heads vs. others out there. I may have knocked Indy a little hard, but I'm only giving my thoughts on these heads from my point of view.
I understand what your saying, but in reality, I think the valve train will be fine for what we're doing, and probably even more. But that's only my thoughts...I hope edelbrock will someday maybe change a few things with these heads to help elevate them to a higher "bolt on" level.
And I'm not 100% sure these are the next best thing either...it would be nice if an ordinary guy could buy these heads, buy the TD rockers, bolt them on with a good valve job, and run the heck out of them!! This is one big reason why I helped Comp design better lifters for the mopars. I think a true bolt on or drop in lifter, or shelf item that really works is what alot of people with moderate skills could really use. Even builders like me appreciate parts that work like they should!
It is still nice to have good aftermarket parts to choose from unlike 20 years ago. I would like to see more...maybe someday. Anyways, I wasn't bothered by your post Wize, it's good to discuss things like this on an open board. I'm excited to see what these heads can do and looking forward to doing more in the future. I think a high rpm 440 would be real fun!!
Brian
Brian Hafliger
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Re: G BOB'S engine build w/pics and some other tid bits
[Re: PUNK]
#224053
02/20/09 09:36 PM
02/20/09 09:36 PM
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Brian Hafliger
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Quote:
Brian, isnt it ashamed that the manufacturer could have just done the holes from the git go. I honestly think that even a 1.5 rocker would have to have the pushrod holes opened up for clearancing. The Victor headed engine I built used the same rockers you have and I had enough aluminum shavings on the ground to sweep up and cast another head. Almost. I really dont understand why the manufacturer did it that way. Oh well. G-Bobs Hotrods gonna be killer now. I read somewhere that for a nine second car that a diaper was involved....Is that for the engine or for Glen? LOL!
LOL...!!!!!! We were kidding about that today, cause I know I needed one when my car went 1.37 60ft, so I think Glenn might need some dependz and engine diaper. I wonder if Bob called edelbrock and exposed some of these "problems" if they would listen of just turn the nose up????
That sucks your not taking the cuda...are we still dyno'n it????
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Re: G BOB'S engine build w/pics and some other tid bits
[Re: Brian Hafliger]
#224054
02/22/09 01:58 AM
02/22/09 01:58 AM
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Joined: Jan 2003
Posts: 3,616 Riverside, Ca
G_bob
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Quote:
Quote:
Brian, isnt it ashamed that the manufacturer could have just done the holes from the git go. I honestly think that even a 1.5 rocker would have to have the pushrod holes opened up for clearancing. The Victor headed engine I built used the same rockers you have and I had enough aluminum shavings on the ground to sweep up and cast another head. Almost. I really dont understand why the manufacturer did it that way. Oh well. G-Bobs Hotrods gonna be killer now. I read somewhere that for a nine second car that a diaper was involved....Is that for the engine or for Glen? LOL!
LOL...!!!!!! We were kidding about that today, cause I know I needed one when my car went 1.37 60ft, so I think Glenn might need some dependz and engine diaper.
And my between race refreshment will be a bottle of Ensure.
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