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04-30-2006, 12:11 PM | #1 |
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Join Date: Jan 2004
Location: Olympia, WA
Posts: 231
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sbc #434 heads any good?
are there any flow rates or specs available for the the SBC #354434? Mortec says it't a 75-79...262/267/305...60cc chamber.
Any body got any more info? Thanks
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72 Chevy C20 Longhorn 72 Chevy, K20 Custom Camper 67 Chevy, LWB, C20, 350/350, PS, PB, 65 Jag MKII |
04-30-2006, 03:27 PM | #2 |
Fabricate till you "puke"
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Location: Ill
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Re: sbc #434 heads any good?
Good heads on a 283/305/307, but a little small on the valves/runners on the larger sb mills..... L
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
04-30-2006, 05:21 PM | #3 |
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Re: sbc #434 heads any good?
Are these the 74-76 262 monza heads-- I ran them on a 283 -- I believe it lowered compression on my 283 to around 9-1. They have the hardened valve seats for unleaded.
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04-30-2006, 05:57 PM | #4 |
Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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Re: sbc #434 heads any good?
They should be the same comp ratio on a 283, as the old "520" casting was (60cc power pac head). the old 4 brl 283's didnt run too bad L
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
04-30-2006, 10:06 PM | #5 |
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Re: sbc #434 heads any good?
I was thinking about using them on a mild 350 but sounds like I should keep looking...
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72 Chevy C20 Longhorn 72 Chevy, K20 Custom Camper 67 Chevy, LWB, C20, 350/350, PS, PB, 65 Jag MKII |
04-30-2006, 11:01 PM | #6 | |
I have a radical idea!
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Re: sbc #434 heads any good?
Quote:
Aerohead Racing Components Indianapolis, IN 46239 317-862-0223
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05-01-2006, 01:38 AM | #7 |
ureckmefixit2@cox.net
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Re: sbc #434 heads any good?
My 355ci sb crate engine came with #434 heads 194 160 with port work was 422@5600 rpm but there thin castings
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That's U RECK ME FIX it 2 74 Chevy Short Bed 355ci Sportsman II 64cc Angle Plug Crower Custom Grind .462in .486ex Dyno Test 422hp @ 5600 And it's got a Holley 3.73 Gears 12 Bolt 3.73 w/Posi 700R4 Going In I'm a Body Man So There! That's why it's not painted |
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