help with my set up 402 stroker
08-12-2007, 12:13 PM
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help with my set up 402 stroker I've got a 01 camaro with a 402 stroker turbo 400 trans only a 3200 converter ford 9" rearend 370 gears. First we'll start out as it's a ls2 block eagle crank eagle rods diamond pistons afr 225 heads fast 90 intake holley 90 TB, 85mm maf 42 lbs svo injectors kooks 1 7/8 headers y pipe with a cutout. It's about 11.5 to 1 compression texas speed 257/266 113 don't remember the exact lift. My problem is it only made 430 to the tires. I would think it should make more than that, I took it to the track and it went 11.40 at 119 with a 1.6 60 foot on motor and I sprayed a 150 shot it only went 10.70 at 125 with a 1.5 60 foot. Both of these were off the foot brake
On nitrous it only picked up 65 horse on the dyno. The car weights 3650 with me in it. It is pretty much full suspension car. It only has a racetronics fuel pump in it and it seems to drop fuel pressure to about 52 psi why am I losing fuel pressure do I need a inline pump to hold pressure? Why is it not making power it should make any suggestions? do I need better exhoust? tune seems good it drives on the street great. a/f is at 12.9 and total timing is 26 and 6 degrees pulled on nitrous.
Any help would be great
Thanks pete
On nitrous it only picked up 65 horse on the dyno. The car weights 3650 with me in it. It is pretty much full suspension car. It only has a racetronics fuel pump in it and it seems to drop fuel pressure to about 52 psi why am I losing fuel pressure do I need a inline pump to hold pressure? Why is it not making power it should make any suggestions? do I need better exhoust? tune seems good it drives on the street great. a/f is at 12.9 and total timing is 26 and 6 degrees pulled on nitrous.
Any help would be great
Thanks pete
08-13-2007, 07:12 AM
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it seems something is definitely soaking up some power. mph seems to be alittle low imo,i would have thought that combo would be good for 122-124 mph or more on motor. what was the track comditions ? if it was pretty hot/humid there goes quite a bit of et/mph right there.the dyno usually dissapoints alot of people,especially th350 or 400 non lockup trans equipped cars but still your setup (should) be alittle over 450 rw i would think.on spray it really seems to fall over if it only picked up 65 rw on a 150 hit.
08-17-2007, 12:07 PM
#7
I'm also runnign a 402, more compression and better heads then you are running, but less cam so the heads are probably a wash. at 3465lbs leaving off the footbrake I can pop off 10.6 to 10.7 runs all day long, once the suspension is dialed in I expect 10.4, probably faster then that in fall air.
that being said, you definately have a problem somewhere. It is not making anywhere near the power it should, I am also runnging a th400 and with a 5800 n/a comverter I am making 470 at the tires, still have an unported fast intake on my car, stock waterpump as well. With your converter and a cam that size anything less then 475 thru a converter that tight is a dissappointment IMO. I am also running a racetronix fuel system with 42 lb ford injectors, i am going to put a fp guage off the rail this week to keep it in check, but I know there's no pressure drop really. Do you have the hotwire kit on, is the wire tight on the alt?
Are you getting any detonation at all? what do the plugs look like.... with no knock sensors if you are getting detonation you won't really know if you haven't read the plugs. Next time you get to the track put 8 new plugs in the car, make a run and shut off the car as soon as possible, and pull the plugs and see what they look like, make an n/a run too, that way if there is something going on you won't take as much a chance as you would spraying the car.
that being said, you definately have a problem somewhere. It is not making anywhere near the power it should, I am also runnging a th400 and with a 5800 n/a comverter I am making 470 at the tires, still have an unported fast intake on my car, stock waterpump as well. With your converter and a cam that size anything less then 475 thru a converter that tight is a dissappointment IMO. I am also running a racetronix fuel system with 42 lb ford injectors, i am going to put a fp guage off the rail this week to keep it in check, but I know there's no pressure drop really. Do you have the hotwire kit on, is the wire tight on the alt?
Are you getting any detonation at all? what do the plugs look like.... with no knock sensors if you are getting detonation you won't really know if you haven't read the plugs. Next time you get to the track put 8 new plugs in the car, make a run and shut off the car as soon as possible, and pull the plugs and see what they look like, make an n/a run too, that way if there is something going on you won't take as much a chance as you would spraying the car.
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08-18-2007, 08:30 AM
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Yes hot wire kit is on it . NO detonation and the plugs look good I did check them at the end of the track, so I don't know at this point
Originally Posted by JL ws-6
I'm also runnign a 402, more compression and better heads then you are running, but less cam so the heads are probably a wash. at 3465lbs leaving off the footbrake I can pop off 10.6 to 10.7 runs all day long, once the suspension is dialed in I expect 10.4, probably faster then that in fall air.
that being said, you definately have a problem somewhere. It is not making anywhere near the power it should, I am also runnging a th400 and with a 5800 n/a comverter I am making 470 at the tires, still have an unported fast intake on my car, stock waterpump as well. With your converter and a cam that size anything less then 475 thru a converter that tight is a dissappointment IMO. I am also running a racetronix fuel system with 42 lb ford injectors, i am going to put a fp guage off the rail this week to keep it in check, but I know there's no pressure drop really. Do you have the hotwire kit on, is the wire tight on the alt?
Are you getting any detonation at all? what do the plugs look like.... with no knock sensors if you are getting detonation you won't really know if you haven't read the plugs. Next time you get to the track put 8 new plugs in the car, make a run and shut off the car as soon as possible, and pull the plugs and see what they look like, make an n/a run too, that way if there is something going on you won't take as much a chance as you would spraying the car.
that being said, you definately have a problem somewhere. It is not making anywhere near the power it should, I am also runnging a th400 and with a 5800 n/a comverter I am making 470 at the tires, still have an unported fast intake on my car, stock waterpump as well. With your converter and a cam that size anything less then 475 thru a converter that tight is a dissappointment IMO. I am also running a racetronix fuel system with 42 lb ford injectors, i am going to put a fp guage off the rail this week to keep it in check, but I know there's no pressure drop really. Do you have the hotwire kit on, is the wire tight on the alt?
Are you getting any detonation at all? what do the plugs look like.... with no knock sensors if you are getting detonation you won't really know if you haven't read the plugs. Next time you get to the track put 8 new plugs in the car, make a run and shut off the car as soon as possible, and pull the plugs and see what they look like, make an n/a run too, that way if there is something going on you won't take as much a chance as you would spraying the car.
08-18-2007, 08:29 PM
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that racetronix pump is a piece of ****. i have had problems since day 1 trying to get it maintain adequate and my car is only making 526 and the pump cannot keep up. you are probably leaning out esp on juice