I was just wondering how much ballpark it is going to cost and are they happy with the results.. Thanks

We machine alot of both 2 bolt and 4 bolt block for flat bottomed splayed center caps.

The center caps are 172.00

Cut register 7.500 and drill and tap 125.00

Hardware 80.00

Line bore 125.00

line hone is 160.00

Worth it? What about using stock 4 bolt caps?

Going to the splayed steel caps is much stronger than a standard 4 bolt. It's worth it if you are going to spin it, make big power and race it.

check this link out it has alot of good info to read.

http://www.chevelles.com/forums/showthread.php?t=38173

Converting to a 4 bolt main on a BBC is not worth the trouble and expense.

If you truly NEED a 4 bolt main, you NEED an aftermarket block.

How much power will a studded 2 bolt safely handle?

How does that all come into play with BBC?
the same power levels?

I put a 2-bolt main stud kit in my 496 motor just for a bit of comfort on my part.

As for power, I am fairly confident that some guys are getting up to 650 hp out of their GOOD 454/468 2-bolt main motors!

He, He!! A quarter mile at a time!!

It isn't the hp that is the killer, it is excessive rpm's UNLESS you buy good, READ, "EXPENSIVE/STRONG/LIGHTWEIGHT", parts to rpm really high in a BB.

A lot of GOOD 2-bolt, 454/468 motors never see the high side of 6500 rpm and run a LOOOOONG time!

Usually it was the older L-88 type high compressioned, solid cammed 427 motors that got the dog-sh-t rpm'med out of them b/c of the short stroke and big bore combination...


And btw, an 1/8" over 427 motor is a 452"er!!

As always, jmho...

pdq67

Something I've thought about doing. Run a drill thru the main cap into the register area while assembled. Pull the cap , run a reamer into the block for a slip fit to a dowel. Voila, no more cap dance for a few dollars. Can anyone tell me why this wouldn't work.

If the caps are fit right they shouldn't be dancing the only time we have seen caps move is from detonation and then it doesn't matter if they are doweled or not.

We build a lot of engines and we don't seem to have any probems with the caps moving

<font face="Arial,Verdana" size="2">Originally posted by pdq67:
I put a 2-bolt main stud kit in my 496 motor just for a bit of comfort on my part.

As for power, I am fairly confident that some guys are getting up to 650 hp out of their GOOD 454/468 2-bolt main motors!

He, He!! A quarter mile at a time!!

It isn't the hp that is the killer, it is excessive rpm's UNLESS you buy good, READ, "EXPENSIVE/STRONG/LIGHTWEIGHT", parts to rpm really high in a BB.

A lot of GOOD 2-bolt, 454/468 motors never see the high side of 6500 rpm and run a LOOOOONG time!

Usually it was the older L-88 type high compressioned, solid cammed 427 motors that got the dog-sh-t rpm'med out of them b/c of the short stroke and big bore combination...


And btw, an 1/8" over 427 motor is a 452"er!!

As always, jmho...

pdq67</font>
Thanks for your opinion. Thats what I want to get 600hp! Its a BBC for gosh sakes! Anyone else here have the same experience as you? I dont have a budget for a aftermarket block if I really dont need one

I have a two-bolt main putting out about 630 horsepower at 6800 rpms. This is a drag car and the engine has been blue printed. All the bolts in the lower end have been replaced with ARP bolts and studs. Seems to be working very well. I have been told anything under 700 horsepower is safe. They also sell an additional supporter that can be placed holding the caps in place. This is cheaper then trying to make it a four-bolt main.

Jack

<font face="Arial,Verdana" size="2">Originally posted by Jack Titone:
I have a two-bolt main putting out about 630 horsepower at 6800 rpms. This is a drag car and the engine has been blue printed. All the bolts in the lower end have been replaced with ARP bolts and studs. Seems to be working very well. I have been told anything under 700 horsepower is safe. They also sell an additional supporter that can be placed holding the caps in place. This is cheaper then trying to make it a four-bolt main.

Jack</font>

Where can I do some research about these support caps? Glad to hear someone with some high numbers on a 2 bolt block

How much will a studded 4 bolt handle if a studded 2 bolt will handle 600hp? I was hopping for 600 on the engine and then to add a big shot.

So it is possible possible to convert a 2-bolt main engine to a 4-bolt?
1980 LM-1 350.
Let me know.
Thanks.

Renegade

<font face="Arial,Verdana" size="2">Originally posted by musclecar.renegade:
So it is possible possible to convert a 2-bolt main engine to a 4-bolt?
1980 LM-1 350.
Let me know.
Thanks.

Renegade </font>

Yup.. I have heard of lots of people doing it but I was unsure of the cost and benifits