LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

2 bolt vs. 4 bolt main

Thread Tools
 
Search this Thread
 
Old 08-26-2006, 02:17 PM
  #1  
Registered User
Thread Starter
 
formula-bird's Avatar
 
Join Date: Aug 2005
Location: Beans Cove, PA
Posts: 135
2 bolt vs. 4 bolt main

i was thinking about putting a stroker in my 96 firebird i know that it is a 2 bolt main. will it hold up? or should i spend more money and get a 4 bolt? mopar and ford are 2 bolt mains and they stay together just fine.well the mopars do i don't know about the fords. the car ain't going to be pounded on everyday just on some weekends.
formula-bird is offline  
Old 08-26-2006, 02:28 PM
  #2  
Registered User
 
stew's94z's Avatar
 
Join Date: Sep 2002
Location: Georgia, CSRA
Posts: 163
Re: 2 bolt vs. 4 bolt main

I'm running a 2-stud main block. I think you'll be fine under 6500 rpm and 500 hp.

Dean
stew's94z is offline  
Old 08-26-2006, 02:39 PM
  #3  
Registered User
 
Severous01's Avatar
 
Join Date: Jul 2002
Location: Burlington, NJ
Posts: 1,367
Re: 2 bolt vs. 4 bolt main

nos or power adder??? get it splayed. it'll be cheaper then going witn a new lt4 block and it will be stronger. the kit is cheap and getting it done is the expensive part. just have them do the work while they have the motor and you'll not even notice the price diff.
Severous01 is offline  
Old 08-26-2006, 03:46 PM
  #4  
Registered User
 
bowtiepwr's Avatar
 
Join Date: Oct 2000
Location: western, Massachusetts
Posts: 1,430
Re: 2 bolt vs. 4 bolt main

>I just used the stock LT1 block bored/stroked and clearanced. I bought their splayed caps http://www.callies.com/components/co...s/sbc_caps.htm and their
Dragon Slayer crank http://www.callies.com/crankshafts/dragonslayer.htm
bowtiepwr is offline  
Old 08-26-2006, 03:47 PM
  #5  
Registered User
 
bowtiepwr's Avatar
 
Join Date: Oct 2000
Location: western, Massachusetts
Posts: 1,430
Re: 2 bolt vs. 4 bolt main

>Oh and splayed caps are stronger than 4 bolt main caps supposed to have a better clamping strength.
bowtiepwr is offline  
Old 08-26-2006, 04:37 PM
  #6  
Registered User
 
97WS6SCharged's Avatar
 
Join Date: Nov 2002
Location: Jacksonville
Posts: 4,784
Re: 2 bolt vs. 4 bolt main

The metal that a good set of aftermarket main caps are made out of is stronger than the metal the engine block is made out of. Basically if you're not going to turn it hard, go with a 2 bolt stud setup. If you intend to rag the bejesus out of it or use a power adder of any kind, spring for the 4 bolt cap conversion. Also, if you intend to use an expensive crank (4340), go ahead and have the 4 bolt caps installed.
97WS6SCharged is offline  
Old 08-26-2006, 04:57 PM
  #7  
Registered User
 
razor02097's Avatar
 
Join Date: Aug 2006
Posts: 922
Re: 2 bolt vs. 4 bolt main

I think it would be easier to find a corvette LT1 then it would be to find an LT4.
razor02097 is offline  
Old 08-26-2006, 05:07 PM
  #8  
Registered User
 
bowtiepwr's Avatar
 
Join Date: Oct 2000
Location: western, Massachusetts
Posts: 1,430
Re: 2 bolt vs. 4 bolt main

Originally Posted by razor02097
I think it would be easier to find a corvette LT1 then it would be to find an LT4.
>what does this have to do with the price of rice in China???
no one mentioned LT4, but the LT1 Corvette does come with a (weaker than a
splayed 2 bolt) 4 bolt main bearing caps.
bowtiepwr is offline  
Old 08-26-2006, 05:17 PM
  #9  
Registered User
 
razor02097's Avatar
 
Join Date: Aug 2006
Posts: 922
Re: 2 bolt vs. 4 bolt main

Originally Posted by bowtiepwr
>what does this have to do with the price of rice in China???
no one mentioned LT4, but the LT1 Corvette does come with a (weaker than a
splayed 2 bolt) 4 bolt main bearing caps.
Ouch man... I'll be sure to use the quote button next time!

Originally Posted by Severous01
nos or power adder??? get it splayed. it'll be cheaper then going witn a new lt4 block and it will be stronger. the kit is cheap and getting it done is the expensive part. just have them do the work while they have the motor and you'll not even notice the price diff.
I was adding to the "It'll be cheaper then going with a new lt4 block" with another suggestion.
razor02097 is offline  
Old 08-26-2006, 05:33 PM
  #10  
Registered User
 
bowtiepwr's Avatar
 
Join Date: Oct 2000
Location: western, Massachusetts
Posts: 1,430
Re: 2 bolt vs. 4 bolt main

Originally Posted by Severous01
... it'll be cheaper then going witn a new lt4 block and it will be stronger...




Originally Posted by razor02097
Ouch man... I'll be sure to use the quote button next time!
>Ooops sorry dude, but I do like that quote
bowtiepwr is offline  
Old 08-26-2006, 06:32 PM
  #11  
Registered User
Thread Starter
 
formula-bird's Avatar
 
Join Date: Aug 2005
Location: Beans Cove, PA
Posts: 135
Re: 2 bolt vs. 4 bolt main

no i will not be putting a power adder on the car,i like my motors to live! besides i allready got 3 cars that are boosted.
formula-bird is offline  
Old 08-26-2006, 10:47 PM
  #12  
Registered User
 
Alvin@pcmforless.com's Avatar
 
Join Date: Apr 2000
Location: Charlotte, NC
Posts: 1,614
Re: 2 bolt vs. 4 bolt main

I put 10k miles on a 2 bolt main 550 rwhp car tuning 6700 RPM (ran out of gear in the 1/8th) To me the money can be spent better for 90% of the setups out there.
Alvin@pcmforless.com is offline  
Old 08-26-2006, 10:51 PM
  #13  
Banned
 
1racerdude's Avatar
 
Join Date: May 2003
Location: LA (lower Alabama)
Posts: 6,661
Re: 2 bolt vs. 4 bolt main

http://web.camaross.com/forums/showt...84#post4061184

This thread might answer some of your questions.
1racerdude is offline  
Old 09-11-2006, 07:19 PM
  #14  
Registered User
 
TransAm396's Avatar
 
Join Date: Mar 2004
Location: Connecticut
Posts: 2,125
Re: 2 bolt vs. 4 bolt main

Originally Posted by Alvin@pcmforless.com
I put 10k miles on a 2 bolt main 550 rwhp car tuning 6700 RPM (ran out of gear in the 1/8th) To me the money can be spent better for 90% of the setups out there.


thank you...i was going to say this exact same thing. Just like people saying you NEED a double roller..i put a new stock timing chain in my car and reved to 6600 daily..beating the **** out of it and it never gave me any problems...ill also be doing a studded 2 bolt main/stock crank in my turbo setup.(t-76-10/14psi)
TransAm396 is offline  
Old 09-12-2006, 08:28 AM
  #15  
Registered User
 
NVetro's Avatar
 
Join Date: Jun 2003
Location: New Jersey
Posts: 1,439
Re: 2 bolt vs. 4 bolt main

Build it once dude, go with 4 bolt splayed main on the center 3 caps. Your gonna kick your self in the @ss if your ideas change and you want to add n2o or a charger or something. I almost left it 2 bolt and went studs, thank god i didn't cus my future power adder plans changed, as mite yours. Plus better to have it and not need it then to need it and not have it.
NVetro is offline  


Quick Reply: 2 bolt vs. 4 bolt main



All times are GMT -5. The time now is 03:26 PM.