"The Mongoose" - 1 3/4" Headers To 1 7/8" Headers (447 rwhp and 431 rwtq)
Lets go beat up on 5.br0's
11-22-2016, 08:50 AM
#243
This was matching my LS3 intake to L92 heads. Not sure how much it really helps, but something to say I did, out of boredom, in an afternoon.
11-22-2016, 10:13 AM
#244
Phoenix, Please do not take offense but do you think that you might have some valve train stability issues? Looking at the graph it looks to me like its build power like crazy up to 5600rpm, then it table tops at 5700 rpm and carries peak to 6150. It seems to me that even with a LS6 intake that combo has a potential 455whp in it as is.
Solid numbers either way!!
Solid numbers either way!!
11-22-2016, 10:47 AM
#245
Phoenix, Please do not take offense but do you think that you might have some valve train stability issues? Looking at the graph it looks to me like its build power like crazy up to 5600rpm, then it table tops at 5700 rpm and carries peak to 6150. It seems to me that even with a LS6 intake that combo has a potential 455whp in it as is.
Solid numbers either way!!
Solid numbers either way!!
Well, valvetrain consists of BTR .660 lift spring/retainer kit, stock lifters, LS2 lifter trays, stock rockers, and hardened pushrods. I guess that could be a possibility, but I thought the graph gets wavy when there are valvetrain issues. Valvetrain makes no noise whatsoever and the cam is quieter than the old Comp cam.
11-22-2016, 10:49 AM
#246
I took a piece of "file folder" paper and laid it on the ports. Tapped around each port with a ball peen hammer. The sharp edges of the port imprinted/almost cut the paper (then cut out with razor). Then laid the paper on the intake and went to work with a dremel. Came out nice.
This was matching my LS3 intake to L92 heads. Not sure how much it really helps, but something to say I did, out of boredom, in an afternoon.
This was matching my LS3 intake to L92 heads. Not sure how much it really helps, but something to say I did, out of boredom, in an afternoon.
11-22-2016, 10:50 AM
#247
Phoenix, Please do not take offense but do you think that you might have some valve train stability issues? Looking at the graph it looks to me like its build power like crazy up to 5600rpm, then it table tops at 5700 rpm and carries peak to 6150. It seems to me that even with a LS6 intake that combo has a potential 455whp in it as is.
Solid numbers either way!!
Solid numbers either way!!
11-22-2016, 11:29 AM
#249
11 Second Club
Thanks for the bigger graph Phoenix. It does look strong. With your combo, which is good, I would think it would carry the power a little further. Also just friendly here, no bashing. Of coarse I bet the intake swap will help it out some.
One thing I noticed. The valve train sounds fine except for "stock lifters". Did you re-use the factory lifters or did you just mean LS7 lifters?
One thing I noticed. The valve train sounds fine except for "stock lifters". Did you re-use the factory lifters or did you just mean LS7 lifters?
11-22-2016, 11:34 AM
#250
I'm using my stock LS1 lifters. My car only has 46,000 miles on it. Kent inspected everything when doing the cam swap, and said the lifters, pushrods, trays, etc. all looked great. He said this motor is damn healthy. He had a very hard time trying to turn the motor over by hand. Compression is right at 11:1, so I'm sure that has something to do with it.
11-22-2016, 02:12 PM
#254
I do believe a Nitrous system will be in the future. I am very tempted to send the FAST 102mm intake off to Nitrous Outlet and have them install the Money Maker system. If I don't do that, I'll just go with one of their 102mm plate systems.
11-23-2016, 01:46 PM
#255
Originally Posted by Rise of the Phoenix
That's a great idea. I don't see any downside to doing this. Brian Tooley is a huge proponent in port matching the FAST intakes to the heads, and according to him, that's where the true power gains are in porting an intake.
11-23-2016, 02:01 PM
#256
"We charge $150-$200 depending on different factors, however without the heads I wouldn't even feel good about doing the job. Not only do we port match the intake exactly to the heads while the base is mocked up on the heads, we also put a scribe line on the intake face of the head to line the intake back up."
"We could "take the bumps" out for $100, but I would not recommend taking an appreciable amount of material out of the intake without having the heads in hand. I've had some of these "port matched" intakes that people spent upwards of $500 on and I feel like they would have been better off with the intake just smoothed up since the intake ended up bigger than the heads in places."
11-23-2016, 02:32 PM
#257
Originally Posted by Rise of the Phoenix
According to him. Here is what he sent me a while back when I asked about him porting a FAST intake:
"We charge $150-$200 depending on different factors, however without the heads I wouldn't even feel good about doing the job. Not only do we port match the intake exactly to the heads while the base is mocked up on the heads, we also put a scribe line on the intake face of the head to line the intake back up."
"We could "take the bumps" out for $100, but I would not recommend taking an appreciable amount of material out of the intake without having the heads in hand. I've had some of these "port matched" intakes that people spent upwards of $500 on and I feel like they would have been better off with the intake just smoothed up since the intake ended up bigger than the heads in places."
"We charge $150-$200 depending on different factors, however without the heads I wouldn't even feel good about doing the job. Not only do we port match the intake exactly to the heads while the base is mocked up on the heads, we also put a scribe line on the intake face of the head to line the intake back up."
"We could "take the bumps" out for $100, but I would not recommend taking an appreciable amount of material out of the intake without having the heads in hand. I've had some of these "port matched" intakes that people spent upwards of $500 on and I feel like they would have been better off with the intake just smoothed up since the intake ended up bigger than the heads in places."
Are going to drive the car awhile the way it is or swap to Fast pretty soon?
11-23-2016, 02:37 PM
#258
Not sure if he has any dyno numbers to back up what he's saying or not. He's been in the game longer than just about anyone else, so I think what he says has merit. Like with anything, there are different schools of thought on just about everything related to heads, cams, and intakes.
I'm going to drive and enjoy the car as much as I can until the weather turns shitty. I still need to get the FAST intake ordered, but I probably won't get it on until after the 1st of the new year.
I'm going to drive and enjoy the car as much as I can until the weather turns shitty. I still need to get the FAST intake ordered, but I probably won't get it on until after the 1st of the new year.
11-23-2016, 03:25 PM
#259
Originally Posted by Rise of the Phoenix
Not sure if he has any dyno numbers to back up what he's saying or not. He's been in the game longer than just about anyone else, so I think what he says has merit. Like with anything, there are different schools of thought on just about everything related to heads, cams, and intakes.
I'm going to drive and enjoy the car as much as I can until the weather turns shitty. I still need to get the FAST intake ordered, but I probably won't get it on until after the 1st of the new year.
I'm going to drive and enjoy the car as much as I can until the weather turns shitty. I still need to get the FAST intake ordered, but I probably won't get it on until after the 1st of the new year.
Weather already crappy here. I missed this season but oh well. I'll get to take my time over winter. Great build and read so far. Enjoy it!
11-23-2016, 05:33 PM
#260
According to him. Here is what he sent me a while back when I asked about him porting a FAST intake:
"We charge $150-$200 depending on different factors, however without the heads I wouldn't even feel good about doing the job. Not only do we port match the intake exactly to the heads while the base is mocked up on the heads, we also put a scribe line on the intake face of the head to line the intake back up."
"We could "take the bumps" out for $100, but I would not recommend taking an appreciable amount of material out of the intake without having the heads in hand. I've had some of these "port matched" intakes that people spent upwards of $500 on and I feel like they would have been better off with the intake just smoothed up since the intake ended up bigger than the heads in places."
"We charge $150-$200 depending on different factors, however without the heads I wouldn't even feel good about doing the job. Not only do we port match the intake exactly to the heads while the base is mocked up on the heads, we also put a scribe line on the intake face of the head to line the intake back up."
"We could "take the bumps" out for $100, but I would not recommend taking an appreciable amount of material out of the intake without having the heads in hand. I've had some of these "port matched" intakes that people spent upwards of $500 on and I feel like they would have been better off with the intake just smoothed up since the intake ended up bigger than the heads in places."
He was honest with me and said the "jobs" looked good. He charged me a minimal amount to mill and assemble the heads.
