400 blocks

gunmetal71 · October 20th, 2009, 04:05 PM

Are the 400 size engine blocks small blocks or big blocks? i know they usually come with the th400 tranny -isnt that for a big blocks ?
im looking into getting a new engine - i origianlly wanted to go with the 455 ,but im going to give it to my niece one day-and i know that too much power for her.i was looking into the stock 350, or maybe a .030 and mild cam 350- but i was reading that the 400 blocks come with 350hp.
help

Nilsson · October 20th, 2009, 04:16 PM

Big block.

gunmetal71 · October 20th, 2009, 04:52 PM

thanks buddy

svnt442 · October 20th, 2009, 05:22 PM

260, 307, 330, 350, 403 = small block
400 early, 400 late, 425, 455 = big block
There were also 3 diesel blocks. A 260 which is basically a turd
A 350 D diesel and a 350 DX block
Then there is the nascar block.

gunmetal71 · October 20th, 2009, 05:50 PM

how much hp can i get out of a 350 without stroking it - say maybe bore of .030 or .040 ? i know the cam means alot too- so which cam as well....
thanks

Nilsson · October 20th, 2009, 05:54 PM

Quote:

Originally Posted by gunmetal71

how much hp can i get out of a 350 without stroking it - say maybe bore of .030 or .040 ? i know the cam means alot too- so which cam as well....
thanks

There is substitute for cubic inches unless you are willing to spend the big bucks, go with a big block.

gunmetal71 · October 20th, 2009, 06:20 PM

i know the bigger block the more the hp - im not asking about that- i was just wondering how much do you think i can get out of a 350 -bored .030 or .040 with a nice cam ?

cutlassefi · October 20th, 2009, 06:49 PM

325-350hp is pretty easy to do and still have good driveablity. Just remember, to some degree whether it's a small block or big block, more hp = more $$$.
As far as cost goes, you'll find out a lot of good info here. But my favorite thing to do with a small block is grind the crank to SBC rod size, use an aftermarket SBC rod and bore it to 4.125, SBC 400 bore size. Parts are cheap, readily available and will take just about anything you throw at it.

78cutlass · October 20th, 2009, 07:50 PM

gunmetal71,
IMHO, cutlassefi builds a pretty mean warmed over SBO 350 (pump gas friendly too). It would make a great street light to street light motor. I'd definitely consider him as a very good source for an Olds 350 build-up.

gunmetal71 · October 21st, 2009, 02:14 PM

thanks for the info
btw: what does SBC stand for ? and can u give me more info on what cam,rods,pistons and crank i should use...... i.e - part #s and where to find them? -thanks

78cutlass · October 21st, 2009, 11:59 PM

(?) SBC = small block Chevy

SBO = small block Olds

BBO = big block Olds

70 cutlass s · October 22nd, 2009, 05:19 AM

Any machine shop would be able to build a 350 hp 350 It would cost a whole lot pretty easy build. Just add some high compression pistons and little bigger than stock cam. Nice carb and intake. Maybe some headers. Your also need to build up the trans run a small stall conv. and it would a good idea to run 3.42 gears in the rear end.

Run to Rund · October 22nd, 2009, 10:30 AM

If you want a 68-9 400 block, I have one. Can get it in Albuquerque or Las Vegas NV.

gmrocket · October 24th, 2009, 07:17 PM

Quote:

Originally Posted by gunmetal71

i know the bigger block the more the hp - im not asking about that- i was just wondering how much do you think i can get out of a 350 -bored .030 or .040 with a nice cam ?

the main thing is to get the combination correct for it to work&please you. what rear gear ratio, torque converter,comp ratio&car will the engine be going into? you can get 300 400 500 or more, not to hard to do...but if hasnt got the correct rear gear&tq converter, it will be a turd&you'll be disapointed. find out the gear&tq converter&someone can give you cam&comp ratio suggestions

gunmetal71 · October 25th, 2009, 03:45 PM

Quote:

Originally Posted by gmrocket

the main thing is to get the combination correct for it to work&please you. what rear gear ratio, torque converter,comp ratio&car will the engine be going into? you can get 300 400 500 or more, not to hard to do...but if hasnt got the correct rear gear&tq converter, it will be a turd&you'll be disapointed. find out the gear&tq converter&someone can give you cam&comp ratio suggestions

the rear end gear ratio im looking to run is no more than 355 ,perhaps a little less -would like it to be street ready-but highway friendly.looking to try and make at least 300 rwhp -so i guess 350hp at the crank.

gunmetal71 · October 25th, 2009, 03:48 PM

Quote:

Originally Posted by Run to Rund

If you want a 68-9 400 block, I have one. Can get it in Albuquerque or Las Vegas NV.

thanks but no thanks- if i were to go big block it would definitely be a 455 -build it up to the article i read from joe mondelo -making 500hp,but i dont want to spend too much $-and have too much hp- someday i will be giving it to one of my niece's

October 20th, 2009, 04:05 PM	#1 (permalink)
gunmetal71 American Muscle ! Join Date: Jun 2009 Location: San Jose , CA Posts: 19	400 blocks Are the 400 size engine blocks small blocks or big blocks? i know they usually come with the th400 tranny -isnt that for a big blocks ? im looking into getting a new engine - i origianlly wanted to go with the 455 ,but im going to give it to my niece one day-and i know that too much power for her.i was looking into the stock 350, or maybe a .030 and mild cam 350- but i was reading that the 400 blocks come with 350hp. help

October 20th, 2009, 04:16 PM	#2 (permalink)
Nilsson Registered User Join Date: Feb 2009 Location: Columbus, OH Posts: 336	Big block. __________________ ___________________________________________ http://motorhead43026.tripod.com/two...vorite_things/ 68 442, original engine and 4-speed transmission (Nasty) 69 Cougar 33,000 original miles (Nice) 2003 Honda Accord boring,anemic,dependable (Ho Hum) "No matter how fast I go, I still can't pass that gas station." "If you are an engineer by trade all things are not black or white, live a little and step into the gray area"

October 20th, 2009, 05:22 PM	#4 (permalink)
svnt442 Registered User Join Date: Jun 2009 Location: San Jose, CA Posts: 454	260, 307, 330, 350, 403 = small block 400 early, 400 late, 425, 455 = big block There were also 3 diesel blocks. A 260 which is basically a turd A 350 D diesel and a 350 DX block Then there is the nascar block. __________________ Randy 1970 442 Last edited by svnt442; October 20th, 2009 at 06:16 PM..

October 20th, 2009, 05:50 PM	#5 (permalink)
gunmetal71 American Muscle ! Join Date: Jun 2009 Location: San Jose , CA Posts: 19	how much hp ? how much hp can i get out of a 350 without stroking it - say maybe bore of .030 or .040 ? i know the cam means alot too- so which cam as well.... thanks

October 20th, 2009, 06:49 PM	#8 (permalink)
cutlassefi Registered User Join Date: Nov 2008 Location: Central Fl Posts: 163	350 build 325-350hp is pretty easy to do and still have good driveablity. Just remember, to some degree whether it's a small block or big block, more hp = more $$$. As far as cost goes, you'll find out a lot of good info here. But my favorite thing to do with a small block is grind the crank to SBC rod size, use an aftermarket SBC rod and bore it to 4.125, SBC 400 bore size. Parts are cheap, readily available and will take just about anything you throw at it.

October 20th, 2009, 04:52 PM	#3 (permalink)
gunmetal71 American Muscle ! Join Date: Jun 2009 Location: San Jose , CA Posts: 19	thanks buddy

October 20th, 2009, 06:20 PM	#7 (permalink)
gunmetal71 American Muscle ! Join Date: Jun 2009 Location: San Jose , CA Posts: 19	i know the bigger block the more the hp - im not asking about that- i was just wondering how much do you think i can get out of a 350 -bored .030 or .040 with a nice cam ?

October 20th, 2009, 07:50 PM	#9 (permalink)
78cutlass 78cutlass Join Date: Jan 2008 Location: Florida Posts: 100	gunmetal71, IMHO, cutlassefi builds a pretty mean warmed over SBO 350 (pump gas friendly too). It would make a great street light to street light motor. I'd definitely consider him as a very good source for an Olds 350 build-up.

October 21st, 2009, 02:14 PM	#10 (permalink)
gunmetal71 American Muscle ! Join Date: Jun 2009 Location: San Jose , CA Posts: 19	thanks for the info btw: what does SBC stand for ? and can u give me more info on what cam,rods,pistons and crank i should use...... i.e - part #s and where to find them? -thanks

October 21st, 2009, 11:59 PM	#11 (permalink)
78cutlass 78cutlass Join Date: Jan 2008 Location: Florida Posts: 100	(?) SBC = small block Chevy SBO = small block Olds BBO = big block Olds

October 22nd, 2009, 05:19 AM	#12 (permalink)
70 cutlass s Registered User Join Date: Sep 2009 Location: Elizabethtown,KY Posts: 240	Any machine shop would be able to build a 350 hp 350 It would cost a whole lot pretty easy build. Just add some high compression pistons and little bigger than stock cam. Nice carb and intake. Maybe some headers. Your also need to build up the trans run a small stall conv. and it would a good idea to run 3.42 gears in the rear end.

October 22nd, 2009, 10:30 AM	#13 (permalink)
Run to Rund Registered User Join Date: Mar 2008 Posts: 337	If you want a 68-9 400 block, I have one. Can get it in Albuquerque or Las Vegas NV.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
different blocks for stick or automatic tranny	olds4life	Drivetrain/Differentials	9	October 24th, 2009 07:23 PM
Blocks for sale	J-(Chicago)	Parts For Sale	1	June 26th, 2009 02:59 PM
storing a car on floor or on blocks?	jensenracing77	General Discussion	7	May 4th, 2009 10:02 AM
Blocks, heads, cranks, 77 Cutlass, tons of Olds stuff.	DennisG.	Parts For Sale	12	August 17th, 2008 10:37 AM
REMAN LONG BLOCKS?	ZASX	Big Blocks	2	November 19th, 2007 05:34 PM