Main girdle?
03-20-2008, 02:07 AM
#1
On The Tree
Thread Starter
Join Date: Aug 2007
Location: Finland
Posts: 112
Likes: 0
Received 0 Likes
on
0 Posts
Main girdle? I have searched but not found answer. Are you guys using your main girdles with stock caps or billet caps? I mean, if I'm trying to get about 700 rwhp out of stock crank alu 347, do I need both, billet caps and girdle, or does the girdle strengthen those stock caps enough?
How about iron truck blocks, do those need billet caps and/or girdle also at that power level?
How about iron truck blocks, do those need billet caps and/or girdle also at that power level?
03-20-2008, 08:05 AM
#3
I would pin the mains before I would even think about a girdle. The girdle only ties the main caps together, not the main caps to the block which is what pinning will do. The katech billet mains are very inexpensive and already have dowels built in...Steve at RED can install them on the cheap too.
Marty
Marty
03-21-2008, 08:23 AM
#6
10 Second Club
iTrader: (10)
Join Date: Jun 2005
Location: cape cod mass
Posts: 570
Likes: 0
Received 0 Likes
on
0 Posts
run a girdle if ur when u do an aluminum block even for 600hp it will keep the motor from twisting under load..and do the mains. the girdle pretty much bolts in and cost 400.00 not that much when its holding ur $4000+ motor. if i stay aluminum i'll be running a girdle
Trending Topics
03-21-2008, 09:31 AM
#8
TECH Resident
iTrader: (43)
Join Date: Jan 2003
Location: Dayton, OH
Posts: 920
Likes: 0
Received 0 Likes
on
0 Posts
Well I can tell you by real world experience what works.
Stock crank with stock pinned caps and using ARP studs. I've been 8.50s @ 3,700lbs.
The girdle is a waste of money.
The caps will still walk with alum or steel block. Have them pinned.
Stock crank with stock pinned caps and using ARP studs. I've been 8.50s @ 3,700lbs.
The girdle is a waste of money.
The caps will still walk with alum or steel block. Have them pinned. 
03-21-2008, 03:38 PM
#10
On The Tree
Thread Starter
Join Date: Aug 2007
Location: Finland
Posts: 112
Likes: 0
Received 0 Likes
on
0 Posts
Thanks, this is just what I was after! Still seems a bit funny when every book or magazine tells you that oem powdered metal caps will break after 550 hp..?
03-21-2008, 04:20 PM
#11
don't believe what you read in books 
racecar was 8.20's 170'ish with just studs, i run that same block and crank still in my DD truck 12 to 15 psi and 40K miles later it needs rings. That's about it
i wouldn't even blink at making 600RW on the stock parts as is, save maybe the pistons.
racecar was 8.20's 170'ish with just studs, i run that same block and crank still in my DD truck 12 to 15 psi and 40K miles later it needs rings. That's about it
i wouldn't even blink at making 600RW on the stock parts as is, save maybe the pistons.
03-31-2008, 10:04 PM
#18
Launching!
Join Date: Oct 2003
Location: Chicago
Posts: 250
Likes: 0
Received 0 Likes
on
0 Posts
Dont be cheap, Run the Girdle, it a bad *** piece, and its a bolt in.
its a 1/4 inch of ss on top of the mains ,and it distributes the load evenly. it will Kepp everything together and stabilize your bottom end. you can get it from epp, tell bob to give it to you for a super deal , tell him to knock off 40$ off list price,bob a dealer for The girdle, bro it works well and it stops the main caps from see sawing back and forth, plus no pinning give you horsepower, the girdle acts as a oil scraper, and blocks your wind age when used with stock windage tray, you will see a 20 horsepower gain.
You will love it.
its a 1/4 inch of ss on top of the mains ,and it distributes the load evenly. it will Kepp everything together and stabilize your bottom end. you can get it from epp, tell bob to give it to you for a super deal , tell him to knock off 40$ off list price,bob a dealer for The girdle, bro it works well and it stops the main caps from see sawing back and forth, plus no pinning give you horsepower, the girdle acts as a oil scraper, and blocks your wind age when used with stock windage tray, you will see a 20 horsepower gain.
You will love it.
Last edited by stage274; 04-01-2008 at 12:15 AM.
04-01-2008, 02:59 AM
#19
TECH Apprentice
iTrader: (1)
Join Date: Aug 2005
Location: southern cali
Posts: 334
Likes: 0
Received 0 Likes
on
0 Posts
Dont be cheap, Run the Girdle, it a bad *** piece, and its a bolt in.
its a 1/4 inch of ss on top of the mains ,and it distributes the load evenly. it will Kepp everything together and stabilize your bottom end. you can get it from epp, tell bob to give it to you for a super deal , tell him to knock off 40$ off list price,bob a dealer for The girdle, bro it works well and it stops the main caps from see sawing back and forth, plus no pinning give you horsepower, the girdle acts as a oil scraper, and blocks your wind age when used with stock windage tray, you will see a 20 horsepower gain.
You will love it.
its a 1/4 inch of ss on top of the mains ,and it distributes the load evenly. it will Kepp everything together and stabilize your bottom end. you can get it from epp, tell bob to give it to you for a super deal , tell him to knock off 40$ off list price,bob a dealer for The girdle, bro it works well and it stops the main caps from see sawing back and forth, plus no pinning give you horsepower, the girdle acts as a oil scraper, and blocks your wind age when used with stock windage tray, you will see a 20 horsepower gain.
You will love it.
04-01-2008, 03:10 PM
#20
I can tell you I have one in each of my cars and the mains still walk! Does it help? Can't prove it either way plenty have done great with out and a few have done ok with. If I hd it to do over again it would be pinned caps with ARP studs I know that stops the caps from walking. Good luck with what every you decide I have made over 800rwhp on a 346 with just ARP studs so your goal is a easily achievable one