Re: Aftermarket RB Block
[Re: 10sec440]
#2382592
10/05/17 06:48 PM
10/05/17 06:48 PM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,185
PA.
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I have to laugh out loud when I hear about bad ring seal on aluminum blocks
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: Aftermarket RB Block
[Re: pittsburghracer]
#2382995
10/06/17 03:19 PM
10/06/17 03:19 PM
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Joined: Aug 2003
Posts: 43,228 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,228
Bend,OR USA
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Laugh all you want, I have heard the same results from many heads up west coast racer, power adders included 80 to 130 HP loss(700 + and above HP) on engine combination with all the exact same parts being transferred from a iron block to a aluminum block with or without fill Bottom line now is we have no good source of both types of RB or B block today, aluminum or iron
Last edited by Cab_Burge; 10/06/17 03:19 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Aftermarket RB Block
[Re: 10sec440]
#2385665
10/11/17 03:34 PM
10/11/17 03:34 PM
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Joined: Jan 2003
Posts: 19,375 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,375
Las Vegas
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Well we run an aluminum block in the heads up car and will take the weight saving ANY day over the minimal HP cost from any minor ring seal issue. We used both and there is a VERY VERY VERY tiny amount of difference in power. More than offset by the lower weight of the block. In fact a new Dart ALUMINUM block was just ordered for it a couple weeks ago as it will be going to a much shorter deck height for next year. Also ordered was another block for a S/G racer for the same reason, the weight. Everything will be transferred from the old 582, rotating assy etc and headed to the dyno. I don't expect to see more than a 5hp difference.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Aftermarket RB Block
[Re: 10sec440]
#2385680
10/11/17 03:54 PM
10/11/17 03:54 PM
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Joined: Jan 2003
Posts: 14,506 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,506
So. Burlington, Vt.
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When it comes to a BB Mopar....... I'll take the 150lb weights saving from an aluminum block every time.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Aftermarket RB Block
[Re: Al_Alguire]
#2386092
10/12/17 02:48 AM
10/12/17 02:48 AM
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Joined: May 2011
Posts: 625 Oakville, Wa
HOTMOPR
mopar
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mopar
Joined: May 2011
Posts: 625
Oakville, Wa
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In fact a new Dart ALUMINUM block was just ordered for it a couple weeks ago as it will be going to a much shorter deck height for next year. I assume this is not a mopar block?
67 Barracuda, 470" B, Glide, FuelTech FT600, Precision, Ptc, QA1, Calvert, Smith racecraft, Afco, Dana 60. 275 radials
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Re: Aftermarket RB Block
[Re: 10sec440]
#2386276
10/12/17 02:06 PM
10/12/17 02:06 PM
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Joined: Jan 2003
Posts: 19,375 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,375
Las Vegas
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Yes a Chevy deal..FWIW I have four engines all with aluminum blocks and wont go back to iron...
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Aftermarket RB Block
[Re: dvw]
#2386745
10/13/17 11:15 AM
10/13/17 11:15 AM
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Joined: Feb 2006
Posts: 784 Liverpool, NY
SILVER67
super stock
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super stock
Joined: Feb 2006
Posts: 784
Liverpool, NY
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My car has a very nice late Mega Block, 4.505" with bushed lifter bores. I'd love to have a nice aluminum block. Doug Have the aluminum 4.5 bore version of your iron World block in the basement. Thing can't even weigh 150. Mike
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Re: Aftermarket RB Block
[Re: 10sec440]
#2386816
10/13/17 12:38 PM
10/13/17 12:38 PM
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Joined: Jan 2003
Posts: 13,374 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,374
Marion, South Carolina [><]
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I have a World cast iron hemi block in the shop and holy crap is that thing a tank!
My KB hemi block is about 140 lbs if I remember right. I'll take the aluminum block all day every day over cast iron.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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