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#21
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#22
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Scott is right, my experience is similar but with high ports KRE heads of similar capability.
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#23
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My quick guesstimator says 820-860 is doable with considerably more possible if you get away from pump gas. Think hi port is better way to go vs wide ports if you're locked into traditional heads. (Me I'm going CV1's and E85 13+ compression)
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#24
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So does cross section have anything to do with hp potential or is it just about the cfm?
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#25
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I'll answer and take crap for days. However, cross sectional area and approach angle are king, CFM is less important.
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#26
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CSA, Velocity, CFM are all linked together. If you know any two of them you can calculate the third one.
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 |
#27
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Stock block know idea Aftermarket block your about to find out ...
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#28
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440 CI, 325 eddy heads from SD-Performance and a Scott Brown cam. Scott no's his stuff. Try him you'll be glad you did. GT. |
#29
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My #48s have the intake pushrods moved .225" (wide ported?) and my 468 runs same compression as yours with a much smaller cam than yours. It made good power for a head flowing 312 cfm thru the intake manifold and carbs. Intake port cross-section areas, shape and length is more important than raw flow bench numbers...IMHO.
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Jim www.raceV8s.com 1972 Trans Am drag car, 3300lbs, 468 ci, Iron D ports, 428 block, 9799103 crank, 9.48 @ 143mph, 6.0 @ 114mph in the 1/8th. |
#30
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I've been 9.95 in a 1968 GTO stock style suspension small tire at 3600 lbs with stock block and standard port edelbrocks
that flow 312 cfm 12.2 compression and .700 lift nitrous grind cam. the 9.95 was on motor and spinning. |
#31
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It won't be as easy as falling off a truck. Has it even been done with a non wide port head ? Anyone even make 850 with std E head on pump gas ? |
#32
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__________________
Come take a ride http://www.youtube.com/watch?v=P7Y8Awfk2I0 2008, 2013, 2015, 2016, 2019 Central Il Dragway Mod track champion and 2015 IHRA Div 5 Mod champion |
#33
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#34
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#35
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GTO George |
#36
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I never use alcohol when racing.. lol
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#37
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......well I never drink it while I’m racing......BUT after........!
GTO George |
#38
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I think your drunk right now Georgie.
I asked a legitimate question and pop off and not say a thing that matters, like usual. I do not run alcohol, never have and do not plan on it. But I would like a answer from a poster I respect, that would leave you out. If it gives you more power, I know it allows you to run a ton of CR. OK , more power, does not help in bracket racing. More consistent, that might help but my car runs its number all the time so that would not help. Then you have to deal with corrosion ect. Now you might want to dump that blower and turbo it. You see that turbo Pontiac on U Tube that makes 1250HP with a puny street cam ? You might be of help if you had enough brains to post more them Molodex, Molodex, KRE,KRE,KRE, Babble,babble,babble. Empty your dribble cup George. |
#39
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Dragncar,
Why you gotta be Dick.....or in your case “pee pee”? LOL! Sorry but it (alocohol) does help in the consistency, when and if you every enter a Big Bracket Race (450-600 cars for first round) it helps. No timed runs (sometimes), racing all day and into the morning it helps, plain and simple! Yes I won plenty of races without alky but like I said it helps when Racing in a all day/weekend race......just saying! That gas engine TWIN turbo made 1060 something HP at a tad over 12 lbs of boost......I’m making more HP with less boost (with an “Jurassic” roots type blower) but seriously who cares, except maybe just you! LOL! I love the looks and noise of a Root Blower and zoomie headers (my choice)! As for KRE I hardly mention them, others like you mention them more then me (as YOU just did)! They have “ALWAYS” have had my back so I will “ALWAYS” have theirs....case closed! As for Moldex they have one of the best cranks for a Pontiac, cant help it if you can’t afford it and besides you’re not making enough HP to need one! LOL! GTO Georg Last edited by GTOGEORGE; 05-22-2018 at 07:02 AM. |
#40
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Heads are a small part of combo. I have a small CID (446) stock block, 341 CFM Eheads, small cam (270@.050), 11.25 comp, puny Carter AFB carbs that is in the 770HP range.
__________________
66 GTO Nostalgia Super Stock/Street Legal Car 421 CID, stock block, Wenzler Intake, 2- Carter 750 AFB's, 3.90 Gears, Full Factory Interior, Full Exhaust, Stock Suspension 3750LBS 9.77@136.99 Multiple NSCA/NMCA World Champion 66 GTO 389 3x2, 4 speed, 4.33 gear, Montero Red 33K original Miles 67 GTO 2dr Post, 428, Tri Power, 3.55 Gears 80 Trans Am Black SE Y84 W72 WS6 |
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