Bought a recently rebuilt very low mile 350ci, HELP PLEASE!

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Postby DjTy » Tue Jul 11, 2006 6:04 pm

thank you Elfmagic, that also brings me to the next point:

in contrary to the mounts I am able to get parts of summit and such with my cousin:

I'm planning to use one of these two manifolds and a Holley 4160 / Street avenger 670cfm

leaning toward the shiny edelbrock.

will it fit with a street avenger under the stock hood with air filter?
-Chevy Monza '76 2+2 V8 262ci (old) -> 355ci (oil problem) -> 355ci (piston broke) -> 350ci (current) ... LOL
-Opel Kadett E 1985 1.2Litre (Back up, had a broken condensor :P still need to find replacement accelerator pump membrane...)

My Monza in Cardomain!
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The plugs and exhausts!

Postby DjTy » Thu Jul 13, 2006 3:40 pm

Here's a few snaps of the plugs and the exhaust.

the furthest rear plugs on the passenger sides are with a bit oil on them, but the engine stood for a few months and the packing just over the plugs appear to have leaked on them... still not sure... but the exhaust ports all seem pretty ok.

what do you all think? (wedidn't find anyone yet who could lend us a pressuring meter)

close up
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-Chevy Monza '76 2+2 V8 262ci (old) -> 355ci (oil problem) -> 355ci (piston broke) -> 350ci (current) ... LOL
-Opel Kadett E 1985 1.2Litre (Back up, had a broken condensor :P still need to find replacement accelerator pump membrane...)

My Monza in Cardomain!
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1976 Chevrolet Monza 2+2

Postby DjTy » Sat Jul 15, 2006 10:57 pm

Bump

Not even one opinion about the oily #8 & #6 plugs?
-Chevy Monza '76 2+2 V8 262ci (old) -> 355ci (oil problem) -> 355ci (piston broke) -> 350ci (current) ... LOL
-Opel Kadett E 1985 1.2Litre (Back up, had a broken condensor :P still need to find replacement accelerator pump membrane...)

My Monza in Cardomain!
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1976 Chevrolet Monza 2+2

Postby SunbirdMan » Sun Jul 16, 2006 9:34 am

Well, you asked for my opinion, so here it is. That motor has not been rebuilt.(at least not recently) The heads probably need an overhaul.
It would be difficult to make too many assumptions about what has been done to that motor but that's an early to mid 80s block and heads. (Passenger side dipstick and 7th hole on the head's exhaust bolt pattern) So I'd assume they came together. Its got a fuel pump blockoff plate so it was using an electric fuel pump but that could have been a modification.
Have you turned the motor by hand? You've taken out the plugs so you won't get any compression but you can see if anything is broken inside.
Theres a number cast into the block at the rear on the drivers side just below the cylinder head. An example would be something like
14010209. Get that number and the casting number under the valve cover for the heads. Maybe we can find out more about it.
Roger---------------------------------------------------------------
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN INCHES
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Postby starfire383 » Sun Jul 16, 2006 5:59 pm

Run it. If I had to guess, I'd say some oil is probably getting past the valve seals on those cylinders. Put some umbrella seals on if you're worried. They don't look too bad, change the plugs once a year and forget about it.
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Postby barebonesracecars » Sat Jul 22, 2006 8:42 pm

You may get away with that intake if you use a racing-style air cleaner with a drop base.

I also think that engine has seen more than just a simple break-in...it's been run awhile in a car. However, it may not be a problem.

Along with what Marco said, you can tell quite a bit about an engine's health with a compression tester and a set of leak-down gauges. Only trouble is, you need it warmed up first for an accurate test.
Reid

*1979 Buick Skyhawk SCCA/street/show*
(with Buick 350 power on deck)
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Postby 77 Spyder » Sun Jul 23, 2006 9:13 am

Many years ago, I had a simular set up in a 80 spyder. Back in the day, it was a buget engine build. It was stock 74 camaro short block, a 327 /350hp cam, with 305 heads.

I would not recomend the 305 heads, becasue they do not flow too well as the rpm's climb, but I did it for the compression because I didn't have the $$ for the better heads at the time.
I had true 2" duals, single plane intake with a quadrajet on top.

It pulled pretty strong from 2500 - 4800. The higher compression with that cam in a 350 is a great combo But better flowing heads would have been much better.

I remember the slight lope of that cam sounded great too. However, like the lope of most engines with a quadrajet, some of it comes from idle circuit issues with lower vacuum.
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Postby DjTy » Sun Jul 23, 2006 4:23 pm

tnx all, I will be checking for the numbers for the engine.

most likely umbrella seals will be put in as the engine has quite a few months standing and the valveseals could have been dried up.

Reid, I'm thinking of a nice chrome intake and holley, so I'll be going for a set (Holley avenger & edelbrock shiny performer eps) which should give me an inch or so more clearance, that should work out fine right?

77spyder, thanx for the advice! I hope it will sound nice, but alas, I'll be on a single exhaust :(

after the suspension, body and brakes are done I'll go for a dual.
-Chevy Monza '76 2+2 V8 262ci (old) -> 355ci (oil problem) -> 355ci (piston broke) -> 350ci (current) ... LOL
-Opel Kadett E 1985 1.2Litre (Back up, had a broken condensor :P still need to find replacement accelerator pump membrane...)

My Monza in Cardomain!
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1976 Chevrolet Monza 2+2

Postby barebonesracecars » Sun Jul 23, 2006 6:31 pm

Probably. A drop base still looks good, or you could just use a shorter filter.... 2" or so.

Those itty bitty filters that are barely as big as the carb restrict flow too much. I recall reading about the triangular foam Edelbrock as being one of the worst.
Last edited by barebonesracecars on Fri Aug 04, 2006 10:21 am, edited 1 time in total.
Reid

*1979 Buick Skyhawk SCCA/street/show*
(with Buick 350 power on deck)
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Postby DjTy » Fri Aug 04, 2006 3:06 am

SunbirdMan wrote:Theres a number cast into the block at the rear on the drivers side just below the cylinder head. An example would be something like
14010209. Get that number and the casting number under the valve cover for the heads. Maybe we can find out more about it.


looking if a pic's here where I can find the valve cover c-head number... :s


anyway here's the block's number:
not 100% but I will check it personally next time I'm at the engine.

edit: I think it is:
14010209 standing for:
SIZE......YEAR...MAIN CAP BOLTS
...350...80-85...2 or 4
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-Chevy Monza '76 2+2 V8 262ci (old) -> 355ci (oil problem) -> 355ci (piston broke) -> 350ci (current) ... LOL
-Opel Kadett E 1985 1.2Litre (Back up, had a broken condensor :P still need to find replacement accelerator pump membrane...)

My Monza in Cardomain!
User avatar
DjTy
 
Posts: 553
Joined: Mon Jun 26, 2006 10:08 pm
Location: Netherlands Antilles

1976 Chevrolet Monza 2+2

350

Postby pobrien327 » Fri Feb 23, 2007 11:19 pm

I am running a Performer RPM, an edelbrock 750, a drop down air filter, and it "just" fits under the hood. So it MIGHT fit
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