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From: DFW This user does not support or recommend the product or service displayed in the ad to the right
What heads? Do you know what CC?
Can you post the dyno sheet? I just had the same cam with cnc heads and it was 428 whp and 399wtq.And my car is a manual that did 380 whp/wtq before the heads/cam. It is very dissappointing. The gains on my car were only above 4K and honestly I expected a whole lot more especially under 4K rpms. The only thing I can figure is the CC on my heads are too big causing a loss in compression or The cam was ground wrong or possibly the cam was mistakenly put in with some timing retard in it since we were able to apply 28* of timing without any KR.
What oil pressures are you seeing with the new pump? Mine is hitting 60psi at idle with 200* oil temps and at the same oil temp at redline I am at 102-105 PSI. Something is definitely off with this.
Tom uses a Mustang Dyno correct? If so then that is a STOUT 432hp. Congrats again on the great numbers. Don't ya just love it when it all comes together!!!
What heads? Do you know what CC?
Can you post the dyno sheet? I just had the same cam with cnc heads and it was 428 whp and 399wtq.And my car is a manual that did 380 whp/wtq before the heads/cam. It is very,very dissappointing. The gains on my car were only above 4K and honestly I expected a whole lot more especially under 4K rpms. The only thing I can figure is the CC on my heads are way too big causing a loss in compression or The cam was ground wrong or possibly the cam was mistakenly put in with some timing retard in it since we were able to apply 28* of timing without any KR.
What oil pressures are you seeing with the new pump? Mine is hitting 60psi at idle with 200* oil temps and at the same oil temp at redline I am at 102-105 PSI. Something is definitely off with this.
Something doesn't sound right. Your rwhp is reasonable but the oil pressure is really high. I think I have the same CNC heads from Texas Speed, GT11 cam, and hp oil pump. My oil pressure hangs around 40 at all times. I wonder if you have a faulty pressure regulating valve? Have you changed the oil since the cam was installed? Look and see if the filter is deforming.
You're definitely going to lose power on the low end just because of the over lap. If you find a cam that adds power throughout the rpm range please let me know. I gave up some low end but gained it back with the 4.10 rearend. I also notice a huge power surge at 4000 rpm.
From: DFW This user does not support or recommend the product or service displayed in the ad to the right
Originally Posted by Maui
Something doesn't sound right. Your rwhp is reasonable but the oil pressure is really high. I think I have the same CNC heads from Texas Speed, GT11 cam, and hp oil pump. My oil pressure hangs around 40 at all times. You're definitely going to lose power on the low end just because of the over lap. If you find a cam that adds power throughout the rpm range please let me know. I gave up some low end but gained it back with the 4.10 rearend.
I don't know whats going on. After messaging with Tjwong I am sure something is off in a big way. he has done several GT11 cams and all have picked up power starting at 2k rpms and up. I'm pretty sure the RWHP I have now is not where it should be considering the op picked up more than 70rwhp and 57 rwtq. I picked up only 48rwhp and 20tq with basically the same mods as the op before and after. It looks like I'm down at least 20+hp and 25+tq at peak and probably a hell of alot more than that under the curve. I hope the op can post his dyno sheet. Yea, the oil pressure is a concern as well as it should be bypassing at 85psi or so and static pressure should not be 60psi at idle.
I don't know whats going on. After messaging with Tjwong I am sure something is off in a big way. he has done several GT11 cams and all have picked up power starting at 2k rpms and up. I'm pretty sure the RWHP I have now is not where it should be considering the op picked up more than 70rwhp and 57 rwtq. It looks like I'm down about 20+hp and 25+tq at peak and probably a hell of alot more than that under the curve. I hope the op can post his dyno sheet. Yea, the oil pressure is a concern as well as it should be bypassing at 85psi or so.
I think I was running about 375 rwhp with headers, ported intake, ported tb, and vararam. After the heads and cam I was at about 440 rwhp with stock mufflers. I recently changed to borlas but haven't dynoed it since. I suspect I'm running just under 450.
Funny thing happened to me after the new rearend install my cruise control stopped working. Still haven't figured that one out. Tom looked at all the codes several times. We even took it out on the road with the computer and it indicated the cruise was working fine. I have to find a dealer that won't freak out over my mods to figure out the cruise issue.
From: DFW This user does not support or recommend the product or service displayed in the ad to the right
Originally Posted by Maui
I think I was running about 375 rwhp with headers, ported intake, ported tb, and vararam. After the heads and cam I was at about 440 rwhp with stock mufflers. I recently changed to borlas but haven't dynoed it since. I suspect I'm running just under 450.
Funny thing happened to me after the new rearend install my cruise control stopped working. Still haven't figured that one out. Tom looked at all the codes several times. We even took it out on the road with the computer and it indicated the cruise was working fine. I have to find a dealer that won't freak out over my mods to figure out the cruise issue.
Yep that about where I should be if not a little more, I had 380 hp/tq with my before H&C mods
What heads? Do you know what CC?
Can you post the dyno sheet? I just had the same cam with cnc heads and it was 428 whp and 399wtq.And my car is a manual that did 380 whp/wtq before the heads/cam. It is very,very dissappointing. The gains on my car were only above 4K and honestly I expected a whole lot more especially under 4K rpms. The only thing I can figure is the CC on my heads are way too big causing a loss in compression or The cam was ground wrong or possibly the cam was mistakenly put in with some timing retard in it since we were able to apply 28* of timing without any KR.
What oil pressures are you seeing with the new pump? Mine is hitting 60psi at idle with 200* oil temps and at the same oil temp at redline I am at 102-105 PSI. Something is definitely off with this.
I'll have Tom contact you about the specific heads and also post the dyno sheet, he is much more knowledgable about the specifics than I am. I did not specify any particular parts. I let Tom choose the parts that he knows work together for the right result.
Oil pressure with the new high volume pump that we added is about 53 psi at idle, but jumps to over 90 under hard throttle.
PS. I just came back from a drive and noted 40 psi oil pressure at idle with a warm engine.
Last edited by OCCOMSRAZOR; Oct 7, 2007 at 05:54 PM.
Reason: New info.
From: DFW This user does not support or recommend the product or service displayed in the ad to the right
Originally Posted by OCCOMSRAZOR
I'll have Tom contact you about the specific heads and also post the dyno sheet, he is much more knowledgable about the specifics than I am. I did not specify any particular parts. I let Tom choose the parts that he knows work together for the right result.
Oil pressure with the new high volume pump that we added is about 53 psi at idle, but jumps to over 90 under hard throttle.
does anyone have a before versus after dyno sheet of stock versus GT11 cam ....maybe LPE could chime in
How much of a "before" do you want? I have the baseline dyno that we did before head and cam, but that is with headers, a CAI and a tune.
I also believe we have the original dyno available from when my car was completely stock.
But I don't know that they will give you what you want to see because so many variables have changed, ie heads, ported intake and ported throttle body.
Maybe someone has a before and after with just the GT 11 only installed.