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Old 05-19-2006, 08:06 PM
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opinions needed on my 267 buildup

although it`s a budget build. i want a bit more than a 350 i`m hoping.i`m 19
building a 267 i got out of a 79 malibu. it`s 2 bolt main 3.5 bore 3.480stroke 5.7 rod bad as it sounds it`s actually got potential.

i did a nice 3 angle valve job on the heads. here`s the parts list for the motor itself.1.72 intake and 1.5exh. i may change the heads over to ones off of a 305 h.o. 194. 150 valves . what do you think?

CAM- 214int.-224exh @ .050, lift .443int .465exh lift, 112 lobe cen, hydraulic
ssi springs and retainers .500 max lift
stamped roller rockers.what ratio should i use?
pistons- flat top 4valve releif 4.00" bore
moly rings
4brrl x-cellerator manifold
450 4 barrel holley mechanical secondaries
a streetfighter manual/auto valve body and a racing tranmission kit
2,000-2400 stall

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Old 05-19-2006, 08:20 PM
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You'd be better off finding a bigger engine, even if its "only" a 305. You're just not going to get very much power out of a 267, especially on a budget. A 350 with a 600 cfm carb on it with the same combo you listed below is going to make way more torque than the 267 could ever hope for. And when you increase the torque horsepower will go up as well. In this case, probably 75 or more.

If you really want to build that 267 though those 4.00" bore pistons you listed arent going to work. Also, you may want to check to see if 1.94/1.50 valves aren't too big for the 3.50" bore, they may not even fit. And you might want to think about a vacuum secondary carb as well.
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Old 05-20-2006, 12:31 PM
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i have a p.a.w. book

i have every choice you could think of or never even seen in anything. just i ain`t got the money really. i have a 6 cylinder in my truck now. but i got the 267 with tranny for 150 bucks can`t beat it . the pistons i heard through the grape vine doesn`t really matter as long at the comp distance is accurate. stating that the 262,267,305,350 have all the same bottom end just different size pistons a pin dia. The pistons are flat top 4-vr cast pistons,pin and cast ring set for a 350 for 90 bucks.16.95 for moly rings.

as for the carb i kinda also heard a lil trick to the carb. run 2 brrl mode to pass the sniffer test once a year .and just re-adjust to set what rpm they kick in.

other add ons include 1 5/8 long tube headers and dual glasspack 2 1/4 pipe
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Old 05-20-2006, 12:42 PM
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You got a leaky spark tube...
 
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The 267 has the same stroke as a 350 but that doesnt mean the 4.00" pistons are going to fit the bores. I believe the 350 cranks have larger counterweights on them as well to account for the added mass of the larger pistons.
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Old 05-20-2006, 12:54 PM
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there is no way a 4 inch piston will fit in a 3.5 inch bore, its not possible.
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Old 05-20-2006, 01:03 PM
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Quote:
Originally Posted by Blazin72

If you really want to build that 267 though those 4.00" bore pistons you listed arent going to work. Also, you may want to check to see if 1.94/1.50 valves aren't too big for the 3.50" bore, they may not even fit. And you might want to think about a vacuum secondary carb as well.

CORRECT.........

60 over is as large as you can go.
Big valves will NOT clear the bore.

The rest of the requested combination is a mismatch in my opinion.

Start with a 305 or 350.
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Old 05-20-2006, 07:44 PM
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A 4.3 will have a better money-power ratio. AND just plain more power.
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