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Old 03-13-2009, 11:07 PM
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HP estimate, 350 Chevy

Hey guys, was hoping someone here could give me an estimate on how much horse power this combo will put out, it's the first engine I have built in about 20 years and am using a lot of parts from old projects. It's a 350 sbc, std bore, TRW flat tops, 461 heads, very ported ,2.02-1.60 stainless valves, milled ..010 screw in studs@guide plates. Schneider solid lifter cam, 510 lift, intake duration 284 240 at 050- exhaust duration 304 260 at 050- 107 LS. Have and old Weiand single plane from the 80's not sure what it is, no pn. Carter Super Comp AFB 750 cfm. Hooker super comps 1-3/4 primaries, 3 inch outlet. Mallory dual point, might go with HEI. Moroso windage tray. Its going into a 71 Nova, Turbo 350, 3500 stall, Ford 9 inch with 4.56 gears, Lakewood spring perch traction bars, frame connectors. A LOT of this is stuff I already have and am on a budget to go have a little fun. Play a little on the street on the weekends. Any hp estimate would be much appriciated. Oh yea, also have an Edelbrock crossram with all the linkage, had it forever also, got from a guy who couldn't make it work and never tried it myself.

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Old 03-14-2009, 12:19 AM
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Hi,
I'll need a little more information.

compression ratio, 11:1

I & E Lift 510

Do you have any flow #s

IVO___* BTDC ___IVC ___*ABDC

EVO___*BBDC____EVC____*ATDC

Last edited by richard stewart 3rd; 03-15-2009 at 11:26 AM.
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Old 03-14-2009, 11:03 PM
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hey i'm no expert but i'm guessing somewhere around 420-450 maybe??

Last edited by haulinass-10; 03-15-2009 at 07:32 AM.
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Old 03-15-2009, 03:26 AM
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Compression caculated to a very close 11-1, intake and exhaust both 510 lift. I got the cam from a bud and he lost the cam card, gonna call Schneider to get the specs.
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Old 03-15-2009, 08:15 PM
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My guess is a around the 300 hp 350 tq.
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Old 03-15-2009, 10:58 PM
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Sell the cross ram to a rat rodder, it is well known on the street/strip and racer world that there are only a couple of them that work(yours isn't one of them). Most of these 1960's designs will cut 60+ hp, very few poeple with lots of dyno time ever got them to work good. Use the money to buy a new cam, if the duration specs are 20 degrees difference like you said it was made for circle track racing with stock exhaust manifolds, and won't like headers very well. with the right cam. Should make 410-430 hp.
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Old 03-15-2009, 11:40 PM
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Thanks ericnova72, never thought it could be a circle track cam, what you said makes sense. Yea, never really thought seriously about using the cross ram, it just looks neat sitting on the shelf, got a lot of people over the years that wanted to buy it. I want to stick with a solid cam over hyd because they seem to rpm so much quicker and make more hp, although I have been out of it for almost twenty years so I'm not real hip on modern hyd cam design's. The last solid I ran in a 350 was an Isky Z-30, 480 lift, 250 at .050 and 280 total. It ran SO good and rpm'd very fast, might just go with it again, Isky still has em.
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Old 03-16-2009, 12:59 AM
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I agree with the solid. Use isky if that's your brand, but they've also got newer, better solid grinds. Check into a custom grind, you won't regret it.
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Old 03-16-2009, 10:57 AM
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380-400, change heads and find more.
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Old 03-18-2009, 09:38 PM
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i'm with the @400 group.
lose the cross ram, hot rod did a dyno test and a rpm blew its doors off.
same with the old *** heads, vortecs will destroy them according to vissard. i was unimpressed with my 461's that were pocket ported. seemed like my 'maro shoulda had alot more balls than it did. my 2c
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