bottom end strength
11-15-2006, 02:55 PM
#11
6th Gear Member
Join Date: Jan 2004
Location: United States
Posts: 12,575
RE: bottom end strength
ORIGINAL: akelemecz
Go to ebay .. get the 2v forged internals kit .. ( crank, h beam rods, etc .. ) for about 1300 dollars .. then pay a shop about 700 to install the kit .. and you'll be good to go for up to 800-900 hp ..
But as far as stock .. you really don't want to push anything over 400 rwhp .. you'll be flirting with a time bomb after that ..
Go to ebay .. get the 2v forged internals kit .. ( crank, h beam rods, etc .. ) for about 1300 dollars .. then pay a shop about 700 to install the kit .. and you'll be good to go for up to 800-900 hp ..
But as far as stock .. you really don't want to push anything over 400 rwhp .. you'll be flirting with a time bomb after that ..
There is a fairly big difference between just buying a rotating assembly vs an entire shortblock.
11-15-2006, 02:59 PM
#12
4th Gear Member
Join Date: Oct 2006
Location: Durham, NC
Posts: 1,541
RE: bottom end strength
ORIGINAL: trance565
some ppl say the blocks themselves can take up to 1k hp, but the rotating assembly needs to be replaced for anything above 450, i'de say it's worth it, you can get a good rotating assembly(crank,rods,pistons) for around 1500-2k, and get it installed for for probably another 1k-1500, im not sure how much installation is, but it would be my guess that its 800+. and it's still cheaper to replace the internals than to go get a cobra motor.
some ppl say the blocks themselves can take up to 1k hp, but the rotating assembly needs to be replaced for anything above 450, i'de say it's worth it, you can get a good rotating assembly(crank,rods,pistons) for around 1500-2k, and get it installed for for probably another 1k-1500, im not sure how much installation is, but it would be my guess that its 800+. and it's still cheaper to replace the internals than to go get a cobra motor.
11-15-2006, 06:06 PM
#13
4th Gear Member
Join Date: Dec 2005
Location:
Posts: 1,366
RE: bottom end strength
there are quite a few people running over 400 with a stock bottom, me included, and some running well over 400. I dont have my engine screaming at 7K full boost, i think i have hit the rev limiter maybe 2-3 times. Unless you are dragging it, i think you can do alot more than just 400. I am going to put my smaller pulley on and hopefully do the snow kit. That should get 450 or over. I really dont want to rev it to 7K, i just want more power a little sooner, so the pulley and snow should help. Using all 450whp on rare occassions is probably safer than 400 really often and holding it there for a while. jmo, which admittedly is based on nothing 
I think we can get alot more from the stock bottom than is thrown around, just cant beat the car mercilessly, it isnt a race car.
I would think there would be people replying to these threads saying "no, dont go over 400, i blew my engine doing this!" I really havent seen those people, there are some, but havent seen one in quite awhile. and for those who have destroyed their engine, was it just breaking a piston or rod, or was it burning a hole in one from a bad tune. Bad tune dont count. How many of these people who are saying only 400rw have ever blown their engine b/c of a mech failure?
I think we can get alot more from the stock bottom than is thrown around, just cant beat the car mercilessly, it isnt a race car. I would think there would be people replying to these threads saying "no, dont go over 400, i blew my engine doing this!" I really havent seen those people, there are some, but havent seen one in quite awhile. and for those who have destroyed their engine, was it just breaking a piston or rod, or was it burning a hole in one from a bad tune. Bad tune dont count. How many of these people who are saying only 400rw have ever blown their engine b/c of a mech failure?
11-15-2006, 06:13 PM
#14
6th Gear Member
Join Date: Jan 2004
Location: United States
Posts: 12,575
RE: bottom end strength
ORIGINAL: LvGordo
there are quite a few people running over 400 with a stock bottom, me included, and some running well over 400. I dont have my engine screaming at 7K full boost, i think i have hit the rev limiter maybe 2-3 times. Unless you are dragging it, i think you can do alot more than just 400. I am going to put my smaller pulley on and hopefully do the snow kit. That should get 450 or over. I really dont want to rev it to 7K, i just want more power a little sooner, so the pulley and snow should help. Using all 450whp on rare occassions is probably safer than 400 really often and holding it there for a while. jmo, which admittedly is based on nothing I think we can get alot more from the stock bottom than is thrown around, just cant beat the car mercilessly, it isnt a race car.
I would think there would be people replying to these threads saying "no, dont go over 400, i blew my engine doing this!" I really havent seen those people, there are some, but havent seen one in quite awhile. and for those who have destroyed their engine, was it just breaking a piston or rod, or was it burning a hole in one from a bad tune. Bad tune dont count. How many of these people who are saying only 400rw have ever blown their engine b/c of a mech failure?
there are quite a few people running over 400 with a stock bottom, me included, and some running well over 400. I dont have my engine screaming at 7K full boost, i think i have hit the rev limiter maybe 2-3 times. Unless you are dragging it, i think you can do alot more than just 400. I am going to put my smaller pulley on and hopefully do the snow kit. That should get 450 or over. I really dont want to rev it to 7K, i just want more power a little sooner, so the pulley and snow should help. Using all 450whp on rare occassions is probably safer than 400 really often and holding it there for a while. jmo, which admittedly is based on nothing
I think we can get alot more from the stock bottom than is thrown around, just cant beat the car mercilessly, it isnt a race car. I would think there would be people replying to these threads saying "no, dont go over 400, i blew my engine doing this!" I really havent seen those people, there are some, but havent seen one in quite awhile. and for those who have destroyed their engine, was it just breaking a piston or rod, or was it burning a hole in one from a bad tune. Bad tune dont count. How many of these people who are saying only 400rw have ever blown their engine b/c of a mech failure?
11-15-2006, 07:15 PM
#15
3rd Gear Member
Join Date: Dec 2005
Location:
Posts: 521
RE: bottom end strength
I stretched a piston in my stock motor. Had all the mods in sig on it. Piston actually hit the plug and bent the valve. Motor was shot. Got the forged motor now and no problems. I was pushin 400hp with the stock motor so dont tell him its good to 450 cause it aint
ps And it was dyno tuned by a shop that runs outlaw and drag radial cars so the tune was good
ps And it was dyno tuned by a shop that runs outlaw and drag radial cars so the tune was good
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