I am looking to possibly put a f1 procharger on an lt1 f-body? I am wondering if it will fit the d1sc bracket with proper belt allignment. Will the d1sc tubing connect properly because both d1sc and f1 have the same diameter inlet and outlet? Is there any major clearence issues and is it a major hassle? What exactly has to be done to make it fit? Do i need to remove fans or clearence block or frame, etc? I would like to keep my air conditioner and will run better gas if neccessary. I am not looking to set the world on fire with boost just trying to gain some boost back as I am at 7200ft in elevation and don't want to overspin the d1sc trying to regain boost in a 383 stroker? The closest track is at 6000ft in elevation and d1sc stroker cars only seem to get between 10-14 psi max because they lose approx 5-6 psi because of altitude and bad air. If it does fit without to much trouble I will just order a d1sc complete kit with twin high flow intercoolers and upgrade the head unit to a f1! Thanks for any help or reply!

 

The twin hi-flows may be too small for you.

 

Procharger says the twin highflow intercoolers are good to 800-900 horsepower. At this elevation (6000ft) I will probably only see 550hp at 15lbs of boost (guestimating) so the twin highflow intercoolers I assume will be fine. I know I will have to spin the blower harder to get the same boost you guys get at or near sea level which will create more heat but that is why I wanted to upgrade to a f1 over the d1sc (more effecient blower that will take 8,000 more rpm). Plus I will probably run 104-105 octane fuel! We lose approx. 25-30% of our power up here at 6000ft. Any ideas or suggestions are greatly appreciated!

 

I had done some research on this, and was told the F1 will bolt up to the D1SC brackets. Not sure about the intake/discharge tubes. I believe you can also order the D1SC kit, and just pay around $400 extra or so to have the F1 instead of the D1SC.

As for the twin highflows, they'll work, but a large Spearco etc. would be better for ultimate power output.

 

My friend has a 93 lt1 with a f1 I think the d1sc bracket fit, but may have been slightly modded. He had the twin ICs, but they wouldn't stay together(allthe hoses would blow off even with good clamps). The still made over 700 RWHP with them though.

 

This has been hashed through extensively. If you a search in "Forced Induction" with the keyword "F1" you will find a number of threads that address this.

Rich

 

Unfortunately "F1" is to short a word to work in this site's search feature, so nothing comes up... Thats one thing I hate about this site...

 

The P1SC, D1SC and F1s external case is identical. I replaced my D1SC with an F1, using the same bracket.

 

The F-1 will indeed bolt right up to the P-1SC/D-1SC bracket. The transmission side of the casing on the F-1 is a bit larger than that of the other units, however. Due to this, I believe some grinding away of the engine block is required in order to get the unit to clear the engine itself. If you've ever seen how close a D-1SC is stuffed down there on the LT1, you know what I mean.

At one point I was told by ProCharger that it has been done but it is not an official offering. In other words, they'll sell it to you, just don't ask them for help with it.

I think the twin IC's should be up to the task for what you're looking to do.

Dave

 

There is no grinding of the block needed. The twin IC's will be too small and will restict flow excessively.

Rich

 

If I did upgrade to a spearco frontmount are there going to be any cooling issues as the formula picks all the air from the bottom of the car. I plan on keeping my air conditioner and just thought that making air go through the front mount -then the ac condenser -then the radiator would cause cooling issues that is why I was thinking about useing the twin high flow intercoolers (as they dont block any air going to radiator,etc.) and running 105 octane gas? Procharger is claiming 800hp through the twin high flow intercoolers but of course they are trying to move their product. If you guys think the twin high flow intercoolers won't be enough for say 10sec et's then please let me know. I am just wanting to hit high 10's at 6000' ft in elevation! Remember I will need to spin the supercharger a little harder (approx 5psi which should create a little more heat) to get the same psi you get at Sea level due to elevation that is why I am getting the f1! Thanks for the help!!

 

Take Rich's advice and ditch the twin "highflow" idea. Those are too small, and even if you do manage to cram good boost numbers through them, they will not do a good job of removing heat from the intake charge.

 

Willie is posting good numbers through his twin IC setup.. He has the heat to deal with too... Why are the twins being bashed so much?

 

A local guy here (ATI distributor) picked up 2 psi by using the front mount over the twin IC's that comes with the kit. With the twin IC's, the pulley was producing 8 psi at the intake, while with the front mount the boost reaing was 10 psi at the intake. Just thought I'd report what he said.

 

Does anyone make a custom spearco front mount that will be realitively easy to bolt in? Do the twin high flow intercoolers really suck that bad? I see that they may be more restrictive but are they really that ineffecient? Why does procharger rate the set up at 800-900 horsepower if they suck so bad? I Just want to see 10's at 6000ft in elevation!!