LS1 ACE

iTrader: (3)

Hey guys,

Could use your expert opinions and insight. I'm building a 5.3 for my 69 Plymouth Valiant. Original idea was to go turbo, then scrapped it and decided to go NA. Well, things change and I am going turbo again.

I had a cam spec'd out for the car with a NA setup. Specs are:
222/226 .596 .598

This is on stock heads and will use stock truck manifolds with either a 70mm or 76mm turbo.

My question is, will this cam be detrimental to power? Should I just swap in a LS6 or LS9 cam. Or can I stick with the cam?

Any info is greatly appreciated. Simply trying to save money and forgo the hassle of having to sell parts.

Thanks,

Marvin

SR-71 SS

iTrader: (2)

whats the LSA on that cam?

LS1 ACE

iTrader: (3)

Wow, can't believe I forgot that. LSA is 113+2 .

Sales@Tick

iTrader: (3)

As long as the turbine isn't tiny it will work OK.

LS1 ACE

iTrader: (3)

Just looking to make 500 streetable rwhp. What turbine would NOT be tiny Martin? I know alot of factors go into play but assuming the support is there. Nothing over the top, very simple build with mild cost parts.

SR-71 SS

iTrader: (2)

^^^^^^^^^^^^^^ that is the word of the wise right there.
that cam isn't all that far off of the blower cam on my camaro, it will work. not optimal but it will work.

LilJohn

S472 borg warner with an 87/1.10 turbine combination and install the cam on a 108 or 109 intake centerline instead of a 111

Sales@Tick

iTrader: (3)

This. Anything larger than a 83mm combination IMO would be fine(PT7675, BW 83mm). As John said though, optimal IMO would be a 87mm turbine 1.0 AR combo. I prefer the 1.0 over the 1.10.

LilJohn

1.0 means 200 extra bucks spent on the turbo....

Advance the cam like i suggested and the extra evo will work quite well when using the 1.10 T6 housing.

Bushings for the cam gear are cheaper than T4 turbine housings. Heh.

Sarg

iTrader: (6)

Don't think you will have any issues making 500 hp on that little 5.3 even on pump gas. Are you going fuel injected of carb?

Sales@Tick

iTrader: (3)

Hey, if 200 bucks is the ticket for it going faster down track and for faster spool time then it's worth it IMO.

LS1 ACE

iTrader: (3)

Thanks for the suggestion LilJohn,

Just to be sure, the reason for the installation on a 108 or 109 intake centerline is so that the turbo sees boost more quickly correct?

Pardon my newbie questions, learning alot by reading on here but learn just as much by asking questions.

Thanks.

LS1 ACE

iTrader: (3)

The setup will be fuel injected. This setup will be daily driven so the fuel injection was a must.

Sales@Tick

iTrader: (3)

There is more to it than just producing drive pressure sooner(drive pressure is what drives the turbine which makes boost pressure), but that is the general idea behind advancing the cam. More under the curve power sums it up easily enough.

Sarg

iTrader: (6)

Consider a water to air or air to air intercooler as well. I chose water to air as it is more compact and easier in my opinion. Check out some of the ebay ones. There are folks at over 1500 hp with a $200 intercooler. I started an account with Frozen boost and have been pretty happy with their products. The only thing I didn't like was their water tank and their ptfe lines. Lines were very rigid and the water tank was too short to be able to use a Rule 2000 pump inside.

LS1 ACE

iTrader: (3)

Sarg,

I'm definitely looking to go with an intercooler. As I mentioned, this will be a daily driver and I want all the efficiency possible to keep driveability and dependability to a maximum.

Funny that you mention Frozen Boost, I was actually looking at their water to air intercoolers earlier. I really like the fact that they are compact and can be put anywhere without air being needed for ventilation. This Valiant has a tiny engine bay and an air to air I just dont see where it would fit with good ventilation.

LS1 ACE

iTrader: (3)

Thanks for the clarification Martin. Under the curve power is definitely what I'm looking for.

Sarg

iTrader: (6)

I also went with an exchanger which I will probably mount at the back of the car, just for weight distribution. I just think it adds to a street car and keeping it cool. I know people get away without it, but call me cautious.

Sales@Tick

iTrader: (3)

The 1.0 housing will also increase under the curve power over the 1.10. I just prefer the smallest AR housing possible that I know will do what customer needs it to do.