jeremym

iTrader: (3)

What rib should I go with on 14-16lbs f1a on street car without slip?what comp should I build motor to run that boost on pump gas ? This is going to be a 402,408 or a 427. What power to should I get?

venom ws7

iTrader: (13)

8.9:1 or 9.0:1 I dont know if I wrote this right??
lol

brandon619

iTrader: (1)

I would agree with 9 to 1. I'm building a 418 on LS2 block with All Pro heads, F1A head unit with a 8 rib looking to push 15psi should see around 800 rwhp. Take a look.

http://forums.corvetteforum.com/show....php?t=2020873

Mr.MartyStone

iTrader: (12)

9.5-10:1...centri's like compression, and 12 rib

eb02z06

iTrader: (18)

These are pulls up to 5500 rpm-guess the compression?

Jimmy P

iTrader: (177)

Only problem with that is that no one makes a 12 rib setup for the f-bodys. It would have to be custom work.

jeremym

iTrader: (3)

what pulley should I order 14 or 16? If I go with a 14lbs will I see 14lbs or less? Will the 8 rib slip with that boost?

jeremym

iTrader: (3)

what comp is that? What is the set up? Motor size?blower?trans?

soldeir

iTrader: (10)

As far as I can see it you can do it 2 ways. You can build a really stout LSx with a 10:1 comp and have a really low lsa cam like a 112. You will have a decent na setup. Then when you add the boost you take advantage of the VE of the motor setup and work off that. The other way to go about it is to build a lower comp motor like an 8.5:1. This way you can run more boost on lower octane safer. With an F1 at about 14-16 psi I would say you can make 850 easy on pump. I would also recomend an alky meth injection. Possibly even run E85 too.

eb02z06

iTrader: (18)

Sounds good but relying on a belt to make up for the boost is not worth it-you'll have a hard time making the power and more importantly the torque.

jeremym

iTrader: (3)

do they make a 10 rib for f body?

Jake@EPP

We typicly build a street car setup for around 9.0-9.2:1 compression, better to be on the safe side for sure.

A 8rib usualy works fine for a f1a setup, depending on pulley size. If you try to push it as far as psi goes, you will start going through belts if you do not have a spring loaded tensioner. We currently do not run a tensioner setup as such, and we typicly do a belt swap a race depending on how many hits we make. A larger crank pulley might be the ticket to run a larger blower pulley for belt wrap.

Keep in mind the F-body bracket was designed around the p1sc and d1sc, take that and put a f1a-f1c on it and you might have some issues, .500 aluminum bracket might be a bit thin.

A 12rib is entirely possibly, but to retain the ATI fans and stock radiator, this is not possible. You need a larger inlet to the SC anyways. A smaller radiator would be the best way to go about doing this, or moving the blower uptop like a vette.

jeremym

iTrader: (3)

do they make a 10 rib for f body?

jeremym

iTrader: (3)

do they make a 10 rib for f body?

jeremym

iTrader: (3)

so a f1a on 14lbs would be to much for the bracket? Do they sell a thicker one? Would I need to up grade my stock tensioner pulley?how accurate are the pulleys?

Jake@EPP

We run 19-22psi with the bracket.

It will take 14lbs for sure, but battling the belts is the biggest issue without a tensioner.

ATI does not offer a spring loaded version, sdce does modify the bracket for a tensioner.

Your car being a stick shift car might have belt issues, the rapid decel of the blower can cause belt slip. The spring tensioner setup helps take care of some of the slack caused on the long run of belt.

EPP

iTrader: (22)

I'd say at 14 to 16 psi with an F-1A on the LS1 bracket, you won't have any problems. One thing we have found that helps to eliminate belt slippage when at 14 -up psi is to use a larger air filter than what ProCharger sends with these kits. This is the filter we use. The reason the stock filter can cause belt slippage is because it becomes so restrictive. We have picked up two pounds of boost by swapping out the filters, and I have had customer's see the same results.
http://www.exoticperformanceplus.com...html?item=1086


We're running 18 to 20 psi of boost with the ProCharger bracket and an F-1A on my Z28, shown here. Bob
http://www.exoticperformanceplus.com...Car.php?car=12

MotleyDrew

iTrader: (4)

I agree ! the higher compression is the way to go. You can always run less boost but it should be fine with 16lbs.

Jake@EPP

Run a good intercooler, watch the IAT's and be safe with timing. These high hp motors dont like to be rattled.

Howie Felterbush

iTrader: (1)

Blower setup will run better on pump gas and make more reliable power around 9.2 to 9.5. Turbo motors seems to like 8.7 to 8.9 and make great power on pump gas.

Screw rib setups. Cog belts.