LS2Monte

iTrader: (4)

I'm doing an LSx swap into my 3500lb (with driver) 1988 Monte SS. The motor will be a '05 LQ4 with a small cam (looking at the LS1 hot cam for budget reasons and LS6 springs), Edelbrock Victor Jr, 650 Holley Double Pumper, 1 3/4" long tubes with 3" collectors and 2.5" xpipe. The trans is a built 2004r and is backed by 4.10 gears and 26" tall Hoosiers.

Car will see some street duty but is more of a weekend warrior. Its gonna be raced.

Right now, I don't plan on spraying it, more NA duty but later down the road, it may see a small shot. Nothing crazy as its a stock bottom end.

Anyways, I'm trying to decide on which series converter. It seems the SS series is tighter down low and less efficent up top, while the PT series is the opposite. I'm wondering how much less efficent the SS series converter is on the top end? My last converter had 12-15% slippage at the finish and I do not want that again.

Would I notice the looser PT series down low?

I'm leaning towards the SS4000 or PT4000, as again, I have 4.10 gears and its not a DD.

Thanks guys
Nick

eric01ss

iTrader: (13)

call mike at yank man and he will get u done right!! or else get a neal chance for the win

99Hawk262

iTrader: (19)

I just recently swapped from a SS4000 to a PT4400. You will definitely notice the difference down low. The PT series is much looser on the street. With 4.10's, I wouldn't worry about that too much. I run mine with 3.23's currently and it isn't bad at all. While the PT is looser for daily driving, it is also much faster from a highway roll. I liked the SS4000, but I absolutely love the PT4400. It made a significant difference over the SS4000....I felt like I gained more from the converter swap than I did from my cam swap if that tells you anything. For NA applications, PT is the obvious choice.

LS2Monte

iTrader: (4)

The PT series isnt meant to handle any nitrous correct? Will a 100-150hp setup blow through it? I've read both sides of this argument.

I'm more interested in top end pull. With the 4.10s, I'm sure it wont feel much worse then my sluggish 3200 stall I have now.

Thanks
Nick

99Hawk262

iTrader: (19)

Yank told me no spray with the PT series, but some members have done it successfully. If spray is in your future, I'd stick with the SS4000. But if topend pull is your primary concern, the PT series owns that one.

LS2Monte

iTrader: (4)

How do the PT series deal with boost? I'll probably stay NA for years anyways, I was just curious.

Thanks man
Nick

Matt D

iTrader: (49)

The PT series is a motor converter. If you go with boost, I would look into their PYE or SC converters. Those are built differently to handle the power.

http://www.converter.cc/converters/street/GM/1/main.htm

99Hawk262

iTrader: (19)

+1...PYE for boost.

Dom

iTrader: (2)

When you talk about gained more from a converter swap then cam, you mean from stock to PT or from SS to PT?

My V6 with a converter = 1.8 60s. My stock verter LS1 = 2.0 60s. So yeah converters are awesome.

chrs1313

iTrader: (24)

i think you got it backwards the ss converter is going to be much tighter than the pt...throughout the whole 1/4 mile...pt is going to be looser hense the harder hit off the line...but you cant go wrong with either one...i would stay right at 4000

99Hawk262

iTrader: (19)

From SS to PT. It was a surprisingly huge difference.

cals400ex

iTrader: (27)

how efficient are the pye & sc converters in comparison to the pt and the ss?