KeysZ28

iTrader: (1)

Hi,

I have a question I have a 97 camaro LT1 and im looking to pick up a block to start a build. I found a block but it is out of a 95 camaro, are there any differences between the blocks that I should know about? If so, what problems might I run into? I tried a search but didnt really find much so I figured I would ask.

Thanks for your time,
Braden

RamAir95TA

iTrader: (2)

There is no difference in the LT1 blocks from 1992-1997. Just make sure it is not an L99 (smaller bore).

Also, Corvette and factory replacement blocks are 4-bolt, everything else is a 2-bolt.

KeysZ28

iTrader: (1)

Great thank you for the info. I just spoke with the guy he said the block came from a 95 caprice and it spun a rod bearing. What should I expect to pay for a bare block ?

RamAir95TA

iTrader: (2)

I wouldn't pay more than $75 for a bare block, $100 tops.

speedracer2536

iTrader: (15)

No more than 50.. Your gonna have to get it line bored or honed as well if it spun a main bearing and not a rod so lookout for that.. somepeople will flatout lie about it..

KeysZ28

iTrader: (1)

Okay thats what I was figuring I just didnt want to be low balling the guy or anything. Thanks for all your help!

djjab57

iTrader: (17)

the l99 came in some caprice so like said here double check

quik95lt1

iTrader: (7)

if anybody has a 4 bolt block they wanna get rid of PM me......sorry dont mean to hijack

Paul Bell

iTrader: (9)

Wouldn't you rather start with a two bolt block and install splayed four bolt main bearing caps?

AChotrod

iTrader: (17)

Thats a debate that will go on forever^^^^^

sweetbmxrider

iTrader: (13)

What about the oil pressure sensor location?

litch2004

iTrader: (1)

All blocks have provisions for the top or side. Depending on the year one will have a plug in it.

KeysZ28

iTrader: (1)

Okay so if I check the bore of the block I will be able to tell if it's a l99 correct? Just double checking cause I'm probably gonna check out the block later this week.

BlackBird87

iTrader: (6)

If the block has 327 on it, its an lt1. Also it will have 5.7 on the rear of the block on the drivers side i wanna say

jester1614

iTrader: (13)

blackbird is correct, it will say 327 on the sides and have 5.7 on the bellhousing flange on the drivers side

quik95lt1

iTrader: (7)

nope......

sweetbmxrider

iTrader: (13)

Thought so, just never saw a 93 block in person to verify.

idformula

What is the differance between 4 bolt and splayed main caps?

RamAir95TA

iTrader: (2)

"Splaying" is a term used to describe adding two (or more) bolts to a normally 2-bolt main.

A splayed main looks like this: / | | \ The two outer bolts engage the main webbing at an angle. This supposedly makes the mains stronger.

While a normal 4-bolt main looks like this | | | | with the bolts going straight in.

Like AC mentioned, it will be debated forever as to which one is stronger. One would think the splayed mains would be stronger since they make their way onto some serious HP builds but to my knowledge it's never been proven or dis proven.

Generally, both are significantly stronger than a 2-bolt main.

Paul Bell

iTrader: (9)

Two bolt blocks with stock bolts are good for stock HP and maybe some more. They’re stronger with aftermarket bolts or studs. Four bolt main blocks are stronger. A stock four bolt main block has all four bolts straight into the block. Stronger than that are four bolt blocks with the outer bolts splayed, angled to pull at an angle more from the block sides.
　
It takes an original two bolt block to make a splayed four bolt block. Original four bolt blocks cannot be machined to accept splayed four bolt main bearing caps.
　
If you’re gonna make a four bolt block, it’s best to start with a two bolt block and go splayed.

This picture is from: http://www.superchevy.com/technical/...lt1/index.html
and it happens to be a LT1 buildup. They've used 4 bolt splayed mains.