496-on Pump Gas?

[MudPumper]

Do a search on here. Cyclone posted a recipe for a 700+ hp 502 chevy using a crate short block, al heads and a single carb on pump. Or get a hold of HBJet, he is running a 730hp 496 on pump with iron heads.

[H20MOFO]

Thanks Mudpumper. I'd Love To See The Cyclone 730 Hp-496 Thread.
Sorry For The Dumb Newby Question. To Search A Thread Do You Just Start Clicking In The Prior Threads Here Till You See It Or Is There A Specific Way To Do That?(eaiser) . I Clicked On The Search This Thread Line And That Wasn't Much Help? I Know I'm A Dumb-ass.
I Was A Little Suprised When I Seen The "iron Heads"

[MACHINEHEAD]

A 502 is far better for making power, the key factor being the 4.466 bore and the 4.00 stroke . 4.25 by 4.31 for the 496. I have seen 40hp difference in favor of a 502 with the same combo at 6000 rpm. The 572/620 or 720 would be a mistake. Just read the bottom of the GM performance parts catalogue. "Not for marine use ". However there are a shitload of good parts in that engine. Buy one complete and tear it down. Check everything and put it right back together with a set of Canfields or AFRs and you got 700 easy.

[H20MOFO]

Thanks. 502 It Is. My 454 Block Is 60 Over Anyway. I Was Worried About My Gen 4 Stuff Boltin On To the Gen V 502 But I Guess Most Of It Will Work?. Should I Ditch My Brodix BB2plus Rec Port Heads?
(not The Cnc'd Ones) What's The Best Deal On A 502 Short Block? I'm So Sick Of Buyin 110 Help!!

[ghittner]

There's way more to building that kind of power on pump gas than I'm going into here, just saying it's possible. I can build you one...:idea:
That salt rod IS out of control...wish it was mine!
Reliably? Hmmmmmm, Need a blower maybe and some forged pistons and steel rods?????

[cfm]

Anyone With A Good 496 Formula? Thinkin Roller Rockered-alum. Headed-? Hyd. Cam Vs Solid.
(i'm Not Racing Just Want To Break 90 Without A Blower). On Pump Gas. Dreamin?
Sorry to interupt - I just need to come up to speed.
What kind of boat ? I/O / V Drive / Jet
What HP do you need to surpass 90mph ?
What hp do you have now and what mph ?

[hotbo]

i built a 505 last year .100 block,6.385 rod 4.25 stroke.all eagle froged,srp 10.2 at zero deck 18cc dome.i had comp grind me a solid roller cam i liked.254-260,661-668,108ls-106 centerline. team g intake biggs 1050 dominator,well heres the part most dont like pro-comp aluminum heads,320cc intake runner,225-188 valves,119cc combustion chamber,i had my head guy set them all up he thought they were great at the time:idea: still doing good so we will see,anyway.all i know this combo turns 6300 rpm in a tx-19 with a ss a/b agressor impeller.so im guessing 675+ the desktop dyno says 719hp at 6200 but i think its lieing.so hope this helps.later travis.

[ck7684]

I have a good cam for you, depending on what exhaust you plan on running...

[H20MOFO]

Thanks Again For The Input Guys. Cfm Right Now I'm In A 18' Tahati Panther Energizer B Cut. I Think I'm 600-650 Now And Can't Hit 70. No Diverter Yet.
I Want A Pickle Some Day. After Lookin At Price Tags On 502 Short Blocks ($5700.00)i May Be Stuck With 496. Exaust Wise , Ck7684 I'm Thru-transom Injected Bassetts. I Took Off My Ot's Off This Year. I Got Tired Of Noise Hasseles. I'm All Ears Cam Wise And Exaust Wise. THANKS FOR THE #'S HOTBO. I'D LOVE TO MAKE 700 PLUS ON PUMP GAS.

[cstraub]

A well thought out 496 combination using around 10 to 1, a good set of heads and a matching cam profile to peak around 6200 to 6400 is do able.