357???
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Car: 1986 Pontiac Trans Am
Engine: 350 .40 over (357)
Transmission: 700r4
357???
i just bought an 86 trans am with a 357 (350 bored .40 over). its got camelback heads edelbrock performer intake 780 cfm carb spectre air cleaner headman headers with duals moroso oil pump, all new gaskets, slap shifter, etc.
needs interior work which i can do at my work...
anyway does anyone have experience with a 357 in a f body or a 357 in general???
needs interior work which i can do at my work...
anyway does anyone have experience with a 357 in a f body or a 357 in general???
#2
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: 357???
What 357-specific experience is necessary? It's exactly like any other SBC on the outside.
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Car: 1992 Camaro RS
Engine: 5.0 TBI L03 V8
Transmission: Rebuilt 700R4 W/ Corvette shift kit
Axle/Gears: 2:73 open
Re: 357???
Haha. Yah. If you know how to work a a chevy small block V8, 305, 350, etc... You should know how to work on a 357.
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Car: 1991 RS Camaro w/ Factory T-Tops
Engine: Built 355 ci SBC w/ Carb
Transmission: Borg Warner T-5
Axle/Gears: 4.10 with Posi-Trac
Re: 357???
If you've worked on any Small Block Chevy before you can work on a 357. Other than displacement all Small Block Chevy's are pretty much the same basic design. So, you're 357 won't be any different.
#5
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Car: 1986 Pontiac Trans Am
Engine: 350 .40 over (357)
Transmission: 700r4
Re: 357???
ya guess i shulda been more specific...anyone used one for daily driving?...also its a tight fit with the headers i think im gonna have some heat issues with the pass. side header hitting the inner fender
#6
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Car: 1986 Pontiac Trans Am
Engine: 350 .40 over (357)
Transmission: 700r4
Re: 357???
mostly been a mopar guy been on a couple of there forums n got some good feedback from pretty cool people...just took this car in on a trade for my toronado so im new to the f body scene
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Re: 357???
The extra 7 cubic inches don't mean squat
I never have figured out this business of quoting engines by their actual CID after doing some scheduled maintenance... it makes not the slightest bit of difference whether your 350 has 350, 355, 357, 358, or 360 CID after maintenance, they're still the same motor. Only differences are, how many more maintenances you can still do before the block becomes garbage, and whether it's been maintenanced so far that the walls are so thin that it's garbage ANYWAY which is a function not only of how much maintenance it's had done but also how accurate the cyls were in the first place, how much corrosion it's experienced internally, and various other factors not related to the extra CID.
Now if it's a non-factory combo altogether, like a 383 or a 434 or something, then yeah; but not just a motor that's wore out and had to be bored. Repairing the wear doesn't make into some other size.
You have a 350. Nothing more, nothing less. Forget about the "7" business.
#9
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Car: 1986 Pontiac Trans Am
Engine: 350 .40 over (357)
Transmission: 700r4
Re: 357???
alrite ive just never had one as a daily driver and the motor is built definitly not junk ive seen it from the bare block until now it definitly wasnt bored bcuz it had to be.....kinda was wondering about overheating issues ive heard the cars were prone if it was missing the air dam under the front bumper (which mine is) i was thinking of putting in an electric fan wuld the air dam still be necessary
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: 357???
You'll still need the air dam to direct air through the radiator while the car is in motion.
#12
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Car: 1986 Pontiac Trans Am
Engine: 350 .40 over (357)
Transmission: 700r4
Re: 357???
I never have figured out this business of quoting engines by their actual CID after doing some scheduled maintenance... it makes not the slightest bit of difference whether your 350 has 350, 355, 357, 358, or 360 CID after maintenance, they're still the same motor. Only differences are, how many more maintenances you can still do before the block becomes garbage, and whether it's been maintenanced so far that the walls are so thin that it's garbage ANYWAY which is a function not only of how much maintenance it's had done but also how accurate the cyls were in the first place, how much corrosion it's experienced internally, and various other factors not related to the extra CID.
Now if it's a non-factory combo altogether, like a 383 or a 434 or something, then yeah; but not just a motor that's wore out and had to be bored. Repairing the wear doesn't make into some other size.
You have a 350. Nothing more, nothing less. Forget about the "7" business.
i guess i quoted it because it does change the c.i., even tho it is mainly done to maintain cylinder head shape or for bigger pistons. tho the super small 1or2 horsepower gain isnt even notcieable ....now i wish i culd afford a 383 lol buildin on a budget over here but luckily i have all the parts tools n time i need to make a fun car to drive, cuz thats wut its all about
Last edited by transam357; 02-16-2012 at 09:01 PM.
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Re: 357???
The CID change is TOTALLY TRIVIAL.
To dwell on that is if it makes some kind of difference is a mark of inexperience.
No problem making a fun car to drive; that's a whole different issue.
Yes these cars ABSOLUTELY REQUIRE the air dam. Unlike alot of older cars, the cooling air comes from underneath, not through the grille. They rely on the air dam being there, so that there's positive pressure IN FRONT OF the radiator, and NEGATIVE (or at least, less) pressure BEHIND it. Air (or anything else) only flows from areas of higher pressure to areas of lower pressure, after all; no sense allowing yourself to be outsmarted over something that simple. The force driving the fan doesn't make any difference to the principles of air flow. So yeah, you still need it, get one if you don't have one.
To dwell on that is if it makes some kind of difference is a mark of inexperience.
No problem making a fun car to drive; that's a whole different issue.
Yes these cars ABSOLUTELY REQUIRE the air dam. Unlike alot of older cars, the cooling air comes from underneath, not through the grille. They rely on the air dam being there, so that there's positive pressure IN FRONT OF the radiator, and NEGATIVE (or at least, less) pressure BEHIND it. Air (or anything else) only flows from areas of higher pressure to areas of lower pressure, after all; no sense allowing yourself to be outsmarted over something that simple. The force driving the fan doesn't make any difference to the principles of air flow. So yeah, you still need it, get one if you don't have one.
#14
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Car: 1986 Pontiac Trans Am
Engine: 350 .40 over (357)
Transmission: 700r4
Re: 357???
dude to call me inexperienced u dont even know me i didnt realize this forum was to critique other people i thought it was about the vehicles...this forum is garbage in the week ive been on almost everyone is a smartass so get real lol seriously this is the internet so anyone is a badass i guess tho
btw i wasnt dwelling on the c.i.d. i didnt even bring up the fact it was bored but who really cares
btw i wasnt dwelling on the c.i.d. i didnt even bring up the fact it was bored but who really cares
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Car: 84 Trans Am, 84 Fiero, 86 944
Engine: 5.0, 2.5, 2.5
Transmission: 5spd
Re: 357???
dude to call me inexperienced u dont even know me i didnt realize this forum was to critique other people i thought it was about the vehicles...this forum is garbage in the week ive been on almost everyone is a smartass so get real lol seriously this is the internet so anyone is a badass i guess tho
btw i wasnt dwelling on the c.i.d. i didnt even bring up the fact it was bored but who really cares
btw i wasnt dwelling on the c.i.d. i didnt even bring up the fact it was bored but who really cares
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Car: 84 Trans Am, 84 Fiero, 86 944
Engine: 5.0, 2.5, 2.5
Transmission: 5spd
Re: 357???
yeah my bad there i was thinking of someone else entirely from that bastard thread about hondas and imports vs camaros, sorry to sofakingdom he clearly knows his stuff with over 10k posts, anyone else have that many? 0.0
also i know its as little as makes no difference but damn i like the sound of a 357 under the hood haha
also i know its as little as makes no difference but damn i like the sound of a 357 under the hood haha
Last edited by kmcn47; 02-17-2012 at 02:56 AM. Reason: more to say
#19
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Car: 1986 Pontiac Trans Am
Engine: 350 .40 over (357)
Transmission: 700r4
Re: 357???
yeah thanks man ive just been on alotta forums and had some help and actually met some cool people but theres no need to be an *******...if you dont like the post noone is forcing you to respond ya know...i mean no disrespect to "sofa" but you don't have to b rude as hell just because you may know more than others and just becuase you have a million posts don't mean ****. i know people who can barely turn a computer on but can build some badass ****.
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Car: 92 GMC K2500 LD
Engine: 350 TBI with some mods
Transmission: NV4500
Axle/Gears: 3.73
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Car: 1991 RS Camaro w/ Factory T-Tops
Engine: Built 355 ci SBC w/ Carb
Transmission: Borg Warner T-5
Axle/Gears: 4.10 with Posi-Trac
Re: 357???
I think if I was to use a a 350 that had been bored out to a 357, then I'd probably name the car .357 Magnum, LOL. The extra boring may not make a huge difference in performance, but the truth is it does add cubic inches, so why not say what you've got.
#23
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Car: 1986 Pontiac Trans Am
Engine: 350 .40 over (357)
Transmission: 700r4
Re: 357???
exactly thats all i was doing its not like i was tryin to say its way better than a 350, just saying what it was
#30
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Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
Re: 357???
headers in general just dont fit right out of the box,they all need some sort of "modding" however the more you spend on them the less BS you have to do to make them work/fit.
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Car: 92 T/A 'vert
Engine: Mild .040 over L98 4 bolt mains
Transmission: Mostly stock 700R4, 2600 Vigilante
Axle/Gears: LS1 3.42
Re: 357???
Indeed. A coupla' shoves a a few brake lines, the correct bolts and the Dyno Dons practically fell in.
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