Got a new cam
Thread Starter
Instructor
Joined: Oct 2011
Posts: 135
Likes: 0
Got a new cam
Well i just got my new cam. Its only a hot cam, but now i need to get fresh valve spring for it. Lots use the lt4 springs are they good or are there better ones out there. I have 1.6 rocker to add to it. Need some help in which springs to get???
Drifting
Joined: Dec 2007
Posts: 1,647
Likes: 4
From: Argillite KY
They only have a little over a hundred pounds on the seat and that's not a lot. The LT4 had lighter valves and that helped them. I would think that they're marginal for a solid stem valve and not acceptable if you ever over rev the engine. Not much room for error, I would think.
Keep the revs below 6000 and they might hold up but there are better choices out there. IMHO
Keep the revs below 6000 and they might hold up but there are better choices out there. IMHO
Le Mans Master
Joined: Mar 2001
Posts: 7,999
Likes: 14
From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
Cruise-In III Veteran
Cruise-In IV Veteran
St. Jude Donor '12
They only have a little over a hundred pounds on the seat and that's not a lot. The LT4 had lighter valves and that helped them. I would think that they're marginal for a solid stem valve and not acceptable if you ever over rev the engine. Not much room for error, I would think.
Keep the revs below 6000 and they might hold up but there are better choices out there. IMHO
Keep the revs below 6000 and they might hold up but there are better choices out there. IMHO
(just a question cause I think it was one of my problems with the 383 that ate a lifter)
Drifting
Joined: Dec 2007
Posts: 1,647
Likes: 4
From: Argillite KY
What would you use then?
They can control the Comp XFI lobes so they should be able to control just about anything. Lloyd Elliot uses them and so does AFR. AFR actually bought some Patriot's to use on their heads as the stock spring and they buy the same spring from the Manufacturer for use on their heads. That's good enough for me.
Thread Starter
Instructor
Joined: Oct 2011
Posts: 135
Likes: 0
Are the lt4 spring a direct bolt on. Or is there machine work. I will be spraying with 100 shot later. I,d like to stay away from floating the valves to early in the rpm range. Those Patroit spring look good and at a good price too.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Le Mans Master
Joined: Mar 2001
Posts: 7,999
Likes: 14
From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
Cruise-In III Veteran
Cruise-In IV Veteran
St. Jude Donor '12
I'm a fan of the Patriot Gold 8501B spring kit. The price is hard to beat. They have about 150# seat pressure and about 400# open. They come with Titanium retainers that will allow extra RPM's without float, Super 7 locks, spring bases and Viton seals. The whole kit can be bought for less than $300.00 and sometimes around $250.00.
They can control the Comp XFI lobes so they should be able to control just about anything. Lloyd Elliot uses them and so does AFR. AFR actually bought some Patriot's to use on their heads as the stock spring and they buy the same spring from the Manufacturer for use on their heads. That's good enough for me.
They can control the Comp XFI lobes so they should be able to control just about anything. Lloyd Elliot uses them and so does AFR. AFR actually bought some Patriot's to use on their heads as the stock spring and they buy the same spring from the Manufacturer for use on their heads. That's good enough for me.
Says LS in the description - guess its time for google
Found em on the patriot performance website - $285 plus shipping Looks like that will be an after Christmas buy
Last edited by jaa1992; Dec 12, 2011 at 10:49 PM.
Drifting
Joined: Dec 2007
Posts: 1,647
Likes: 4
From: Argillite KY
Is this the kit? http://www.summitracing.com/parts/PAR-8501/
That being said, Patriot Performance is not in the "valve spring business"....they purchase them from a manufacturer that supplies many springs to many different companies. I like to refer to them as "Patriot Springs" only because you guys can relate to the very good level of reliability these springs have provided out in the field. AFR's "standard spring" is the EXACT same spring purchased from the exact same supplier as the "Patriot Gold", however, we opted not to pay extra for the gold finish which is purely cosmetic. Some of our earlier 205's that shipped had the "gold" spring because we were in a time crunch and had to purchase them direct from Patriot at the time.
This spring has proven VERY dependable and AFR choose to use this spring based on the benefits of a dual spring design, it met our criteria for seat and open pressures, and the reliablity we saw out in the field has been phenominal....and a good portion of that input came from message boards such as this. We have hundreds of 205's out in the field currently, and so far we haven't heard of a single failure with that spring to the best of my knowledge (at least on an AFR headed engine).
This spring has proven VERY dependable and AFR choose to use this spring based on the benefits of a dual spring design, it met our criteria for seat and open pressures, and the reliablity we saw out in the field has been phenominal....and a good portion of that input came from message boards such as this. We have hundreds of 205's out in the field currently, and so far we haven't heard of a single failure with that spring to the best of my knowledge (at least on an AFR headed engine).
Le Mans Master
Joined: Aug 2004
Posts: 5,141
Likes: 7
From: Metairie Louisiana
Same springs I use but I went with the extreme kit for the cam I chose.
https://www.patriot-performance.com/...ction=0&page=2
Last edited by rickneworleansla; Dec 13, 2011 at 10:03 AM.
Le Mans Master
Joined: Aug 2004
Posts: 5,141
Likes: 7
From: Metairie Louisiana
The Extreme may be overkill for a hotcam. I'll let someone else answer that one. The gold have less spring pressure. Here are the specs compared.
8401-BSBC Gold specs...
Install Height: 1.800"
Max. Valve Spring Lift: 0.650"
Spring Pressure Closed: 135 lbs. @ 1.800"
Spring Pressure Open: 375 lbs. @ 1.150"
Coil Bind: 1.090"
Retainer Material: Titanium
8501-BSBC Extreme specs...
Install Height: 1.800"
Max. Valve Spring Lift: 0.660"
Spring Pressure Closed: 155 lbs. @ 1.800"
Spring Pressure Open: 410 lbs. @ 1.140"
Coil Bind: 1.090"
Retainer Material: Titanium
Spring Pressure Open: 375 lbs. @ 1.150"
Coil Bind: 1.090"
Retainer Material: Titanium
8401-BSBC Gold specs...
Install Height: 1.800"
Max. Valve Spring Lift: 0.650"
Spring Pressure Closed: 135 lbs. @ 1.800"
Spring Pressure Open: 375 lbs. @ 1.150"
Coil Bind: 1.090"
Retainer Material: Titanium
8501-BSBC Extreme specs...
Install Height: 1.800"
Max. Valve Spring Lift: 0.660"
Spring Pressure Closed: 155 lbs. @ 1.800"
Spring Pressure Open: 410 lbs. @ 1.140"
Coil Bind: 1.090"
Retainer Material: Titanium
Spring Pressure Open: 375 lbs. @ 1.150"
Coil Bind: 1.090"
Retainer Material: Titanium
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
The Extreme may be overkill for a hotcam. I'll let someone else answer that one. The gold have less spring pressure. Here are the specs compared.
8401-BSBC Gold specs...
Install Height: 1.800"
Max. Valve Spring Lift: 0.650"
Spring Pressure Closed: 135 lbs. @ 1.800"
Spring Pressure Open: 375 lbs. @ 1.150"
Coil Bind: 1.090"
Retainer Material: Titanium
8501-BSBC Extreme specs...
Install Height: 1.800"
Max. Valve Spring Lift: 0.660"
Spring Pressure Closed: 155 lbs. @ 1.800"
Spring Pressure Open: 410 lbs. @ 1.140"
Coil Bind: 1.090"
Retainer Material: Titanium
Spring Pressure Open: 375 lbs. @ 1.150"
Coil Bind: 1.090"
Retainer Material: Titanium
8401-BSBC Gold specs...
Install Height: 1.800"
Max. Valve Spring Lift: 0.650"
Spring Pressure Closed: 135 lbs. @ 1.800"
Spring Pressure Open: 375 lbs. @ 1.150"
Coil Bind: 1.090"
Retainer Material: Titanium
8501-BSBC Extreme specs...
Install Height: 1.800"
Max. Valve Spring Lift: 0.660"
Spring Pressure Closed: 155 lbs. @ 1.800"
Spring Pressure Open: 410 lbs. @ 1.140"
Coil Bind: 1.090"
Retainer Material: Titanium
Spring Pressure Open: 375 lbs. @ 1.150"
Coil Bind: 1.090"
Retainer Material: Titanium