wtb 400 small block
Thread Starter
Senior Member
iTrader: (10)
Joined: Apr 2007
Posts: 773
Likes: 0
From: The Pocono Mountains, PA
Car: 1987 Firebird, Dad bought it new
Engine: 5.7L Vortec w/ LT4 Hot cam
Transmission: 700r4 transgo shiftkit 2600 stall
Axle/Gears: 3.42 '02 SS 6 spd rear
wtb 400 small block
im looking for a 400 short block with no cracks, or major imperfections preferably a 4 bolt main but will consider 2 bolt if in good condition pm me, thanks
Senior Member
iTrader: (9)
Joined: Nov 2004
Posts: 996
Likes: 0
From: Buford, GA
Car: 89 RS
Engine: 6.3L Megasquirted HSR
Transmission: T56
Axle/Gears: 3.70 Posi 9 bolt
Re: wtb 400 small block
another fyi: try posting this in the wanted forum, not the for sale forum
Supreme Member
iTrader: (35)
Joined: Aug 2006
Posts: 1,470
Likes: 1
From: Mississauga,Ont,Canada
Car: 89 IROC
Engine: LSX 6.0 370, TU2 Cam, Fast intake
Transmission: T56 w/ lots of goodies
Axle/Gears: 8.8, Posi, 4.10, 31 Spline
Junior Member
Joined: Mar 2008
Posts: 91
Likes: 0
From: Winchester, IN
Car: 1992 Pontiac Firebird
Engine: 454 BBC
Transmission: TH400
Axle/Gears: 3.23
Re: wtb 400 small block
Got a 400 posted on here. Not sure if its a 2 or 4 bolt main though.
Its already built up to 455hp and 490tq.
Asking $1300 but open to offers
Located in Hagerstown IN 47346
Its already built up to 455hp and 490tq.
Asking $1300 but open to offers
Located in Hagerstown IN 47346
Thread Starter
Senior Member
iTrader: (10)
Joined: Apr 2007
Posts: 773
Likes: 0
From: The Pocono Mountains, PA
Car: 1987 Firebird, Dad bought it new
Engine: 5.7L Vortec w/ LT4 Hot cam
Transmission: 700r4 transgo shiftkit 2600 stall
Axle/Gears: 3.42 '02 SS 6 spd rear
Re: wtb 400 small block
what makes the 2 bolts stronger ???
Junior Member
iTrader: (1)
Joined: Feb 2007
Posts: 88
Likes: 0
From: South Fl
Car: 86 Camaro Sport Coupe
Engine: 377 sbc
Transmission: WC T-5
Axle/Gears: 3:70 Ford 9" Rear
Re: wtb 400 small block
Replied to your pm... and i can answer your question... The thought is that the 4 bolts go straight down and all the really do is remove material from the block. Is this true.. dunno.. I am freinds with the owners of a few high performance shops around here and this debate has gone on for as long as i can remember even with the 350 blocks.. For the ultimate answer there is only 2, But a 2 bolt block and have it drilled for 4 bolt splayed main caps or call a company like world industries. I hope this ehlps a bit...
Trending Topics
Joined: Feb 2003
Posts: 1,229
Likes: 5
From: Albuquerque, NM
Car: 1966 El Camino Custom
Engine: 350
Transmission: 200R4
Axle/Gears: 3:73 12 bolt with Brute Strength
Re: wtb 400 small block
Don't turn down a four bolt main block if it comes your way. Use main studs instead of main bolts and you'll be fine. With main bolts, most of the holding clamp pressure is on the main webs. With main studs, the pressure is equally distributed between the caps and the web. If your block is going to be line honed or bored, tell your machinist that you are going to use main studs so he/she can use them in the machining process.
Junior Member
iTrader: (1)
Joined: Feb 2007
Posts: 88
Likes: 0
From: South Fl
Car: 86 Camaro Sport Coupe
Engine: 377 sbc
Transmission: WC T-5
Axle/Gears: 3:70 Ford 9" Rear
Re: wtb 400 small block
Also remeber that the 400 4 bolt was only made for a couple of years.. so there are far more 2 bolts out there.. both are good for moderate street power... just my .02 from experience..
Thread Starter
Senior Member
iTrader: (10)
Joined: Apr 2007
Posts: 773
Likes: 0
From: The Pocono Mountains, PA
Car: 1987 Firebird, Dad bought it new
Engine: 5.7L Vortec w/ LT4 Hot cam
Transmission: 700r4 transgo shiftkit 2600 stall
Axle/Gears: 3.42 '02 SS 6 spd rear
Re: wtb 400 small block
thanks alot to both of you that information is very helpful
Member
iTrader: (26)
Joined: Jan 2000
Posts: 264
Likes: 0
From: NY zip 12538
Car: way too many
Engine: 283s to 454s
Transmission: autos and sticks
Re: wtb 400 small block
I have a complete 400 SB engine that has been in storage in a garage for probably 20 years, I would consider it a core since it has sat so long. $350 complete NY zip 12538.
Member
Joined: May 2002
Posts: 292
Likes: 0
From: BENSALEM, PA
Car: 88 FORMULA / 88 IROC
Engine: 355 / 355
Transmission: T5 / TH400
Axle/Gears: 10 Bolt-3.73 / 9"-3.90
Re: wtb 400 small block
I have a block and everything to complete it in stock
Located north of Philadelphia.
Josh
215-783-4645
Located north of Philadelphia.
Josh
215-783-4645
Thread
Thread Starter
Forum
Replies
Last Post
New2Chevy
Engine/Drivetrain/Suspension Parts for Sale
2
Sep 28, 2015 12:35 AM





