720 rwhp, but disappointed

[Scuzz]

Originally Posted by SannerRacing

How much did the 4l80 take your hp down? I'm having mine installed next week.

I lost around 40-50 rwhp going from the 6l80 to the 4l80 at my power level

[Dwright]

Originally Posted by BiggFoot

If you are looking for an additional 180 HP that blower is just not capable of delivering it. Here is the deal my friend. You have an engine that is capable of supporting 1300 rwhp, however your goal is only 900 rwhp. If you lay down a big chunk of money to just meet your 900 hp goal then you will be laying down more money later when you decide to shoot for 1000 and then later even more when going for 1200, etc., you are probably beginning to get my point.

The nitrous guys have chirped in and yes you can go that route I am sure, but then the only time you actually have that HP at your disposal is when the bottle is full, warm, and open.

My advice would be to take a deep breath and enjoy the 720 rwhp while considering air supply options capable of delivering 1200-1300 rwhp whether you use it now or not. Once in place, your air supply will typically not be the weak link due to breakage. Just my opinion.

I am going to just enjoy the car for the summer and do some mild tweaks I am going to start looking at twin turbos or a monster supercharger but am in no hurry right now

[jrhagen]

Originally Posted by Jacoup

15 psi on a B8?? I am having a B8 installed right now, everything I gather is 8psi without upgrading the rotating assembly and rods. Details please and how long ?

Out of the crate rotating assembly. Had it in the car for over 4 years. It is at the the track at least 25 weekends per year.

[jrhagen]

Originally Posted by Scuzz

I lost around 40-50 rwhp going from the 6l80 to the 4l80 at my power level

I lost about 40 going from TR6060 to 4L80, then got over 100 back with the pulley and meth.

[Cyber10]

I would think the problem is the blower no? With the build you have/hp goal it seems very unusual that you would stick an LSA on top of it, that is at least what sticks out to me.

[Dwright]

Originally Posted by Cyber10

I would think the problem is the blower no? With the build you have/hp goal it seems very unusual that you would stick an LSA on top of it, that is at least what sticks out to me.

That's because the LS3 was the plan, it blew 30 minutes after it came off the dyno. Everything was built but I chose to stick with the las seeing I had just bought it. It will go at some point but for now I have a hard time buying another supercharger this soon

[BiggFoot]

Originally Posted by jrhagen

Out of the crate rotating assembly. Had it in the car for over 4 years. It is at the the track at least 25 weekends per year.

Not a bad approach. Save your bills for a bit and do lots of research.

My Maggie was at it's limit (800 rwhp) so I opted for the F-1X Procharger which is a mean sum beech, however I will only be loafing this blower at ~ 15 psi until I spring for an LSX.

If I later want to shoot for 1200+ HP then I will probably have to change injectors and possibly add another fuel pump but the blower is easily capable of delivering 35+ psi with just a pulley change. On my current set up even with the JRE Supertensioner I was having belt slip issues, but no more with the Procharger cog drive. Its going to sound like Mad Max rolling down the road, lol.

[DrkPhx]

What are you running for cylinder heads and cold air kit?

[Detoxx03]

Yikes on e85 with that blower and that crazy low compression. Got some bad advice on this setup. I'd sell it and start over with a motor build for atleast and 10.5:1 or more and get a big pd blower if you like that style or something like a F1A-94.

[EDFHOBBIES]

This is the argument that the OLE adm LSA kit looks so appealing at first then you want more more more.. and that 3500 up front turns into 7k plus down the line when you could've just bought the TT or whipple.. not beating up on ADM just he sell them and a lot people promote them.. its great for just bolting on and saying I have a blower!

A lot of people don't factor the added expense of trying to make 800 or 900 out a small supercharger LIKE: $1000 to $1500 in extra pulleys 10 inch wide overdrive ect, $800 bigger heat exchanger, extra or bigger intercooler pump, some type of larger reservoir CUSTOM much dinero maybe even some american money, duel nozzle meth kit, e85, and snout and blower porting..


this is a good thread!

[JANNETTYRACING]

Originally Posted by Dwright

Car build is finally done. 408 ci fully forged with lsa blower seems to be maxed out at 15 lbs. of boost. We put a 28% overdrive pulley (lower) and 2.5 upper along with E85 and the car puts down 718hp and 772 max torque. Car seams to want more air. On stock pulley without E85 it put down 641hp and 652 torque at 5900 rpm, now its max hp is at 5700 rpm with the upgrades. Tuner thinks the blower is maxed out. Just wondering our guys thoughts

Yep it's like a 2 barrel carb on a 454 chevy.

[BiggFoot]

Great comment!!

[Dwright]

Well hit the 1/8 mile track this past weekend and found out real quick power is not the issue. I spin the tires the whole way Down the track. I am running nitto 305/45/18 drag radials and they didnt help. Working out the bugs on the bmr drag suspension but at this point I am not too worried about more power until I get the car to be able to hook consistently

[jrhagen]

Originally Posted by Dwright

Well hit the 1/8 mile track this past weekend and found out real quick power is not the issue. I spin the tires the whole way Down the track. I am running nitto 305/45/18 drag radials and they didnt help. Working out the bugs on the bmr drag suspension but at this point I am not too worried about more power until I get the car to be able to hook consistently

If you have anything over stock hp, Nittos are not the way to go. Bite the bullet and go with MT ET Street R 305/45x17.