How much HP will I lose
#338035
06/04/09 11:03 AM
06/04/09 11:03 AM
|
Joined: Aug 2007
Posts: 74
virginia
tigger1
OP
member
|
OP
member
Joined: Aug 2007
Posts: 74
virginia
|
I am running 117 mph in 1/4 with 72 barracuda full weight, 496, 64mw Heads, 260/600 flat tappet, 5600 flash stall, 2" hooker,Indy single plane, 12-1 compression. I have a problem with water getting in the oil after the engine comes to temp. Not a head gasket problem. Out of work so no budget. If I go with 452's with 2.14 intake and bowl blending only and a tm-7(I have these parts and want to race something) how much am I going to lose in HP?
Twin turbo 440 72 barracuda
|
|
|
Re: How much HP will I lose
[Re: tigger1]
#338036
06/04/09 11:07 AM
06/04/09 11:07 AM
|
Joined: Jan 2003
Posts: 13,417
Marion, South Carolina [><]
an8sec70cuda
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 13,417
Marion, South Carolina [><]
|
Not sure, but something's bad wrong w/ that combo if it'll only run 117 mph in the 1/4.  CHIP
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
|
|
|
Re: How much HP will I lose
[Re: tigger1]
#338038
06/04/09 11:13 AM
06/04/09 11:13 AM
|
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
I am running 117 mph in 1/4 with 72 barracuda full weight, 496, 64mw Heads, 260/600 flat tappet, 5600 flash stall, 2" hooker,Indy single plane, 12-1 compression. I have a problem with water getting in the oil after the engine comes to temp. Not a head gasket problem. Out of work so no budget. If I go with 452's with 2.14 intake and bowl blending only and a tm-7(I have these parts and want to race something) how much am I going to lose in HP?
You say its not a head gasket, why would you think
its a head, if its a crack in a cylinder wall you
will still have the same issues.... just thinking
out loud
|
|
|
Re: How much HP will I lose
[Re: an8sec70cuda]
#338039
06/04/09 11:16 AM
06/04/09 11:16 AM
|
Joined: Aug 2007
Posts: 74
virginia
tigger1
OP
member
|
OP
member
Joined: Aug 2007
Posts: 74
virginia
|
I agree on the "bad wrong" Right now I have stock worn out rear springs and BFG dot street tires. I only made one pass and had no traction in first or second with 3.55 gears. I bought the tires before I was on this forum...learned the hard way. The car hooked in third but because of the gearing I was way too low on the rpm. I have a 4.30 and a 4.56 to choose from next time. I have alot to do but would like to enjoy it with my sons at the local street fights this summer.
Twin turbo 440 72 barracuda
|
|
|
Re: How much HP will I lose
[Re: tigger1]
#338040
06/04/09 11:19 AM
06/04/09 11:19 AM
|
Joined: Aug 2007
Posts: 74
virginia
tigger1
OP
member
|
OP
member
Joined: Aug 2007
Posts: 74
virginia
|
wishfull thinking on the heads since I have the 452's to test it with. I have time but no budget.
If I run the 452's and still have the problem then I'll know it is the block.
Twin turbo 440 72 barracuda
|
|
|
Re: How much HP will I lose
[Re: tigger1]
#338041
06/04/09 11:21 AM
06/04/09 11:21 AM
|
Joined: Jan 2003
Posts: 13,417
Marion, South Carolina [><]
an8sec70cuda
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 13,417
Marion, South Carolina [><]
|
Quote:
I agree on the "bad wrong" Right now I have stock worn out rear springs and BFG dot street tires. I only made one pass and had no traction in first or second with 3.55 gears. I bought the tires before I was on this forum...learned the hard way. The car hooked in third but because of the gearing I was way too low on the rpm. I have a 4.30 and a 4.56 to choose from next time. I have alot to do but would like to enjoy it with my sons at the local street fights this summer.
Didn't mean to sound like I was bashing your ride. What I meant is that it sounds like it's way down on power from where it should be, but with the tire spin and lack of gear then it makes sense. I'd guess you'll be down 30-50 hp depending on the difference in head flow. CHIP
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
|
|
|
Re: How much HP will I lose
[Re: an8sec70cuda]
#338042
06/04/09 11:54 AM
06/04/09 11:54 AM
|
Joined: Aug 2007
Posts: 74
virginia
tigger1
OP
member
|
OP
member
Joined: Aug 2007
Posts: 74
virginia
|
Did not take your comments as "bashing" I thought it would do better myself. I just have too many things that I have not sorted out yet. I have pulled the heads, inspected the cylinders, compression tests, but I can not see any signs of where the water is coming from. I see nothing on the plugs and all the valves are running about the same color. The head swap is the cheapest option I have and will tell me alot about what the problem may be.
Thanks for the comments
Twin turbo 440 72 barracuda
|
|
|
Re: How much HP will I lose
[Re: tigger1]
#338043
06/04/09 01:09 PM
06/04/09 01:09 PM
|
Joined: Jan 2003
Posts: 13,417
Marion, South Carolina [><]
an8sec70cuda
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 13,417
Marion, South Carolina [><]
|
I'd get your MW heads magnafluxed by your local machine shop and see if they're cracked. If they've been ported then it's very common to find cracks in them. If the heads aren't cracked and it's not a head gasket problem, then I'd be looking for a splitting cylinder. Sometimes they start splitting from the bottom up... starts cracking at the main webbing and then hits water as the crack spreads up the cylinder. CHIP
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
|
|
|
Re: How much HP will I lose
[Re: tigger1]
#338044
06/04/09 03:33 PM
06/04/09 03:33 PM
|
Joined: Oct 2004
Posts: 8,165
Left Coast
BobR
master
|
master
Joined: Oct 2004
Posts: 8,165
Left Coast
|
Quote:
wishfull thinking on the heads since I have the 452's to test it with. I have time but no budget.
If I run the 452's and still have the problem then I'll know it is the block.
Did you try some kind of stop leak? I've used Moroso part # 35500. Also try a lower pressure radiator cap.
|
|
|
|
|
