do i need a converter? 1958 GMC
05-18-2015, 08:13 PM
#1
do i need a converter? 1958 GMC 
im not sure if this is the right section to post this but i had a cam installed on my 5.3 for my 58 gmc swap and im not sure if i need a converter with this size of cam
lift 513/556
dur @.50 229/240
int cl. 114.5
i bought this used cam off one of my buddies, he claims i wont need a converter but what do u guys think?
my truck will only have exhaust and cam nothing crazy
another question, qould it be bad if i ran the stock exhaust manifolds?
Last edited by 59 camaro; 03-17-2016 at 12:24 AM.
05-18-2015, 08:44 PM
#2
TECH Resident
NEED a converter, nah not really. But you will definitely feel the benefits if you get one (not an ebay special either). I have a Vigilante from PI, and yes it's a lot of money, but MAN, what a difference it makes.
No harm running the stock manifolds, but again, you're missing out on easy power if you don't do long tubes.
No harm running the stock manifolds, but again, you're missing out on easy power if you don't do long tubes.
05-18-2015, 08:53 PM
#3
NEED a converter, nah not really. But you will definitely feel the benefits if you get one (not an ebay special either). I have a Vigilante from PI, and yes it's a lot of money, but MAN, what a difference it makes.
No harm running the stock manifolds, but again, you're missing out on easy power if you don't do long tubes.
No harm running the stock manifolds, but again, you're missing out on easy power if you don't do long tubes.
05-19-2015, 12:08 AM
#4
TECH Resident
The guys at PI (Precision Industries) are very helpful, and they actually give you a little interview over the phone before they even build a converter for you. If you want the best of the best, it's going to run you about $850. However, before you freak out, there are plenty of other options available from other companies. I would suggest calling them though, figuring out what they suggest for your specific vehicle, and then shopping around for a converter with similar numbers.
05-19-2015, 05:41 PM
#5
I'd probably go with like 2500 stall. I have 2800 stall speed in mine (4,000 lbs car, 4L60e, basically a cruiser as well, but a slightly-modified LS2 instead of a 5.3)
The guys at PI (Precision Industries) are very helpful, and they actually give you a little interview over the phone before they even build a converter for you. If you want the best of the best, it's going to run you about $850. However, before you freak out, there are plenty of other options available from other companies. I would suggest calling them though, figuring out what they suggest for your specific vehicle, and then shopping around for a converter with similar numbers.
The guys at PI (Precision Industries) are very helpful, and they actually give you a little interview over the phone before they even build a converter for you. If you want the best of the best, it's going to run you about $850. However, before you freak out, there are plenty of other options available from other companies. I would suggest calling them though, figuring out what they suggest for your specific vehicle, and then shopping around for a converter with similar numbers.