engine... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Wreckless_71 · 05-26-2008, 11:00 AM

.030 over is a 355 right?

snj8198 · 05-26-2008, 04:15 PM

yep

Wreckless_71 · 05-27-2008, 10:09 AM

thanks...

**special-K** · 05-27-2008, 02:05 PM

I never knew that.For some reason I thought it was a 400 with a 350 crank.I`ve never heard a bored 350 called anything but a 350 bored .xx over.I guess that`s because they either said 350 bored .30 over or called it a 355.

LONGHAIR · 05-27-2008, 03:14 PM

A stock bore 400 (4.125") with a 350 (3.48") crank gives you 372 (+.030= 377)

The formula: bore x bore x stroke x .7854 x # of cylinders

**nightmare** · 05-28-2008, 04:56 PM

Quote:

Originally Posted by Wreckless_71

.030 over is a 355 right?

As long as it uses the stock 350 crank.

Use a 400 crank, and you've got a 383.

Hoods69BadBowTie · 05-29-2008, 06:16 AM

Yea that sound right.

snj8198 · 05-30-2008, 05:32 AM

Quote:

Originally Posted by LONGHAIR

A stock bore 400 (4.125") with a 350 (3.48") crank gives you 372 (+.030= 377)

The formula: bore x bore x stroke x .7854 x # of cylinders

crap, now the math starts.

Wreckless_71 · 05-30-2008, 07:14 PM

lol... yea I figured out the 383 but I never really knew the 355 until I actually calculated it the other day... cool now I can say I have a 355!!!

LONGHAIR · 05-31-2008, 02:58 PM

Quote:

crap, now the math starts.

If a guy can't do the math....he needs to stay out of an engine

snj8198 · 06-01-2008, 09:04 PM

Quote:

Originally Posted by LONGHAIR

If a guy can't do the math....he needs to stay out of an engine

ouch. that'll teach a guy for loosening up on the board.

LONGHAIR · 06-02-2008, 12:51 AM

It was just as "tongue in cheeck" as yours.....LOL

**special-K** · 06-02-2008, 07:17 AM

I never did the figuring.I just never heard anyone call a motor anything other than what it started out as plus what oversize they put on the bore until recent years.I always figured by renaming the motor meant it was a custom build,such as changing stroke by swapping cranks/rods.I just learned something,though.Guy`s shave heads,cut tops off pistons,bore,stroke...You almost have to follow a displacement figure with how you got there.
You can completely build a motor and not know what the actual displacement is.You still need to know math,though.

JayG · 06-02-2008, 10:26 AM

Generally when asked about the engine in the "Pink Thing", I'll say 355. If they say, "never heard of that" , I'll tell 'em "that's a 350 bored .030". They say "oh". Asking questions, that's how I learned most of this stuff. I realize now, as a young teenager, I drove the older guys in the neighborhood crazy with questions.

05-26-2008, 11:00 AM	#1
Wreckless_71 Registered User Join Date: Apr 2007 Location: Kelso, WA Posts: 363	engine... .030 over is a 355 right? __________________ 1972 K10 4" lift, 35’s, 383 stroker, 700r4, current project. 1971 C10 3"/5" static drop, 355/350. "La Bamba.” The current daily driver.

05-26-2008, 04:15 PM	#2
snj8198 Registered User Join Date: Feb 2007 Location: Star Valley, WY Posts: 2,038	Re: engine... yep __________________ Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's

05-27-2008, 10:09 AM	#3
Wreckless_71 Registered User Join Date: Apr 2007 Location: Kelso, WA Posts: 363	Re: engine... thanks... __________________ 1972 K10 4" lift, 35’s, 383 stroker, 700r4, current project. 1971 C10 3"/5" static drop, 355/350. "La Bamba.” The current daily driver.

05-27-2008, 02:05 PM	#4
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: engine... I never knew that.For some reason I thought it was a 400 with a 350 crank.I`ve never heard a bored 350 called anything but a 350 bored .xx over.I guess that`s because they either said 350 bored .30 over or called it a 355. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

05-27-2008, 03:14 PM	#5
LONGHAIR just can't cover up my redneck Join Date: May 2004 Location: Columbus OH Posts: 11,414	Re: engine... A stock bore 400 (4.125") with a 350 (3.48") crank gives you 372 (+.030= 377) The formula: bore x bore x stroke x .7854 x # of cylinders

05-29-2008, 06:16 AM	#7
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	Re: engine... Yea that sound right. __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!

05-30-2008, 07:14 PM	#9
Wreckless_71 Registered User Join Date: Apr 2007 Location: Kelso, WA Posts: 363	Re: engine... lol... yea I figured out the 383 but I never really knew the 355 until I actually calculated it the other day... cool now I can say I have a 355!!! __________________ 1972 K10 4" lift, 35’s, 383 stroker, 700r4, current project. 1971 C10 3"/5" static drop, 355/350. "La Bamba.” The current daily driver.

06-02-2008, 12:51 AM	#12
LONGHAIR just can't cover up my redneck Join Date: May 2004 Location: Columbus OH Posts: 11,414	Re: engine... It was just as "tongue in cheeck" as yours.....LOL

06-02-2008, 07:17 AM	#13
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: engine... I never did the figuring.I just never heard anyone call a motor anything other than what it started out as plus what oversize they put on the bore until recent years.I always figured by renaming the motor meant it was a custom build,such as changing stroke by swapping cranks/rods.I just learned something,though.Guy`s shave heads,cut tops off pistons,bore,stroke...You almost have to follow a displacement figure with how you got there. You can completely build a motor and not know what the actual displacement is.You still need to know math,though. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

06-02-2008, 10:26 AM	#14
JayG Formerly ADHDCARGUY Join Date: Mar 2005 Location: DUNCANVILLE, TX Posts: 1,213	Re: engine... Generally when asked about the engine in the "Pink Thing", I'll say 355. If they say, "never heard of that" , I'll tell 'em "that's a 350 bored .030". They say "oh". Asking questions, that's how I learned most of this stuff. I realize now, as a young teenager, I drove the older guys in the neighborhood crazy with questions. __________________ Jay 67CHEVY SWB,355, built 700r, 5/7,9",posi 3.50,REAR BAGS,HOOSIERS, A/C. 54CHEVY - BURB, beginning construction(well, i gotta take it apart first!) 36FORD PU - WAITING 38CHEVY - 2DR SD,CHASSIS FINISHED 46CHEVY - BURB - waiting



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