How will these heads work with my setup?
How will these heads work with my setup? https://www.patriot-performance.com/...&cat=37&page=1
I've been pricing them out, and it seems everyone has 243's for around ~$1200 p/p. I had made a post the other day about looking for some stock 243's to replace my 241's, but after a recent development I have a little more money to spend, so I'm looking at a pair of 243's p/p. I have a few questions if I were to use these with my setup:
Stock ls1 bottom end, F13 Cam, 128k on motor
1. What size chambers should I go with? The link is for the 59cc.
2. Should I expect a slight compression ratio bump, and what headgaskets should I put on there.
3. Is there a better deal than what I'm looking at?
4. Does anyone have a simliar setup, and what hp did you put down?
EDIT 5. Is this setup going to respond well to nitrous?
Thanks in advance.
I've been pricing them out, and it seems everyone has 243's for around ~$1200 p/p. I had made a post the other day about looking for some stock 243's to replace my 241's, but after a recent development I have a little more money to spend, so I'm looking at a pair of 243's p/p. I have a few questions if I were to use these with my setup:
Stock ls1 bottom end, F13 Cam, 128k on motor
1. What size chambers should I go with? The link is for the 59cc.
2. Should I expect a slight compression ratio bump, and what headgaskets should I put on there.
3. Is there a better deal than what I'm looking at?
4. Does anyone have a simliar setup, and what hp did you put down?
EDIT 5. Is this setup going to respond well to nitrous?
Thanks in advance.
Last edited by matrik; Jan 2, 2010 at 03:38 PM.
The search function does wonders, especially for Patriot head gains. 
1. What size chambers should I go with? The link is for the 59cc.
-59cc if it can fit. With an FM13 it will be close but should fit. I ran an FM13 on 58cc 5.3L heads and it fit in the past.
2. Should I expect a slight compression ratio bump, and what headgaskets should I put on there.
-Yes, w/ 59cc you'll be just north of 11:1. Use stock GM MLS head gaskets.
3. Is there a better deal than what I'm looking at?
-Check out Texas Speed also. PRC has come a long way with their design/porting, and claim better gains than the Patriots. They're also similarly priced +/- $100.
4. Does anyone have a simliar setup, and what hp did you put down?
-Being that you've got a stalled A4, you'll be in the 390-410rwhp range with that setup depending on how well the heads flow and your tuner.
1. What size chambers should I go with? The link is for the 59cc.
-59cc if it can fit. With an FM13 it will be close but should fit. I ran an FM13 on 58cc 5.3L heads and it fit in the past.
2. Should I expect a slight compression ratio bump, and what headgaskets should I put on there.
-Yes, w/ 59cc you'll be just north of 11:1. Use stock GM MLS head gaskets.
3. Is there a better deal than what I'm looking at?
-Check out Texas Speed also. PRC has come a long way with their design/porting, and claim better gains than the Patriots. They're also similarly priced +/- $100.
4. Does anyone have a simliar setup, and what hp did you put down?
-Being that you've got a stalled A4, you'll be in the 390-410rwhp range with that setup depending on how well the heads flow and your tuner.
Thanks a lot for the info! I'll be calling either patriot or TSP to confirm if I'll have ptv clearance issues. As per the search function I wanted info about my setup, not just general numbers .
I also should have asked if I'm going the right direction to add some juice in the future.
.I also should have asked if I'm going the right direction to add some juice in the future.
Thanks a lot for the info! I'll be calling either patriot or TSP to confirm if I'll have ptv clearance issues. As per the search function I wanted info about my setup, not just general numbers .
I also should have asked if I'm going the right direction to add some juice in the future.
.I also should have asked if I'm going the right direction to add some juice in the future.
Just remember that even if you are told there won't be any PTV issues you still need to measure it during the install just to be safe. No one can tell you what your PTV will be dead nuts accurately but they can get in the ballpark pretty well. While the heads are off it's cheap peace of mind to throw some clay on there and check.
