Thoughts on my 5.3 buid?
04-08-2022, 10:48 AM
#1
Thoughts on my 5.3 buid? So I am trying to build a relatively budget friendly 5.3 for my 68 camaro. If I am not happy with it, I plan on going to a 6.0 later with just swapping most of my parts over.
Current Idea:
5.3 LM7 that I will put a set of flat tops in, 706 heads(stock), sdpc LS6 power max plus cam(220/222--0.570”--0.570”--112(+2))
Rods will have ARP bolts installed
Holley 302-2 or 3 oil pan
ls6 intake
Holley terminator x max computer set up with a DBW throttle body
Headers will probably be speedengineering or holley(haven't decided)
Goal is about 375 crank horse
My current engine is a Gen I sbc 327 with flat tops, 461 heads(so 9.5:1 compression) a 222/222 447/447 cam and a 2101 intake. Makes I think MAYBE 290hp. I am hopeful the 5.3 would be an upgrade.
Current Idea:
5.3 LM7 that I will put a set of flat tops in, 706 heads(stock), sdpc LS6 power max plus cam(220/222--0.570”--0.570”--112(+2))
Rods will have ARP bolts installed
Holley 302-2 or 3 oil pan
ls6 intake
Holley terminator x max computer set up with a DBW throttle body
Headers will probably be speedengineering or holley(haven't decided)
Goal is about 375 crank horse
My current engine is a Gen I sbc 327 with flat tops, 461 heads(so 9.5:1 compression) a 222/222 447/447 cam and a 2101 intake. Makes I think MAYBE 290hp. I am hopeful the 5.3 would be an upgrade.
04-08-2022, 11:25 AM
#2
TECH Senior Member
With 706 heads and flat tops, your compression will be 10.59:1 assuming a .051 head gasket and .005 out of the hole, which is typical for these engines.
04-08-2022, 11:47 AM
#3
Using summit's calculator, I should be at 10.8:1 as I will be using a 0.040 gasket, 61cc chambers, 0cc flat tops, 0.005 out of the hole.
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G Atsma (04-08-2022)
04-08-2022, 11:54 AM
#4
I had a 5.3 before my latest build. Used a tbss intake, 224/224 TSP cam, and PRC 5.3 2.5 heads it put down 340hp/315tq through the 4l60e and F**d 9 inch.
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02redchevy (04-08-2022)
04-08-2022, 12:01 PM
#5
I just want this car to outrun my wife's rav4 prime.
04-08-2022, 12:09 PM
#6
TECH Fanatic
if your're planning on using your stock rods you do not want to go with ARP bolts for them unless you resize the rods themselves. Read around here for some nightmares of people that didn't.
The owner of the machine shop that we use heard me talking about them with a buddy and re-iterated that it was a bad idea.
For your stated goals, I wouldn't mess with it at all.
The owner of the machine shop that we use heard me talking about them with a buddy and re-iterated that it was a bad idea.
For your stated goals, I wouldn't mess with it at all.
The following users liked this post:
G Atsma (04-08-2022)
04-08-2022, 12:23 PM
#7
if your're planning on using your stock rods you do not want to go with ARP bolts for them unless you resize the rods themselves. Read around here for some nightmares of people that didn't.
The owner of the machine shop that we use heard me talking about them with a buddy and re-iterated that it was a bad idea.
For your stated goals, I wouldn't mess with it at all.
The owner of the machine shop that we use heard me talking about them with a buddy and re-iterated that it was a bad idea.
For your stated goals, I wouldn't mess with it at all.
The following 2 users liked this post by 02redchevy:
G Atsma (04-08-2022), theunderlord (04-08-2022)
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04-08-2022, 05:38 PM
#8
I'd go for the 6.0 from the start.
Do it once & do it the way you really want. That's usually cheaper and better than having to do it twice.
I learned this the hard way doing a Hawk's Motorsports Level 2 T-56 in my 91 RS Camaro because I thought the Level 2 would be satisfactory instead of spending the extra on a Magnum. That was a mistake 😕 in my decision making. Eventually, the 91 RS will get upgraded to a Magnum.
Do it once & do it the way you really want. That's usually cheaper and better than having to do it twice.
I learned this the hard way doing a Hawk's Motorsports Level 2 T-56 in my 91 RS Camaro because I thought the Level 2 would be satisfactory instead of spending the extra on a Magnum. That was a mistake 😕 in my decision making. Eventually, the 91 RS will get upgraded to a Magnum.
The following users liked this post:
jasons69chevelle (04-08-2022)
04-08-2022, 06:05 PM
#9
I'd go for the 6.0 from the start.
Do it once & do it the way you really want. That's usually cheaper and better than having to do it twice.
I learned this the hard way doing a Hawk's Motorsports Level 2 T-56 in my 91 RS Camaro because I thought the Level 2 would be satisfactory instead of spending the extra on a Magnum. That was a mistake 😕 in my decision making. Eventually, the 91 RS will get upgraded to a Magnum.
Do it once & do it the way you really want. That's usually cheaper and better than having to do it twice.
I learned this the hard way doing a Hawk's Motorsports Level 2 T-56 in my 91 RS Camaro because I thought the Level 2 would be satisfactory instead of spending the extra on a Magnum. That was a mistake 😕 in my decision making. Eventually, the 91 RS will get upgraded to a Magnum.
04-08-2022, 10:07 PM
#12
Those are exactly what I was looking to buy
They are these: https://www.summitracing.com/parts/cgt-c5477040
04-09-2022, 02:09 AM
#13
I'd go for the 6.0 from the start.
Do it once & do it the way you really want. That's usually cheaper and better than having to do it twice.
I learned this the hard way doing a Hawk's Motorsports Level 2 T-56 in my 91 RS Camaro because I thought the Level 2 would be satisfactory instead of spending the extra on a Magnum. That was a mistake 😕 in my decision making. Eventually, the 91 RS will get upgraded to a Magnum.
Do it once & do it the way you really want. That's usually cheaper and better than having to do it twice.
I learned this the hard way doing a Hawk's Motorsports Level 2 T-56 in my 91 RS Camaro because I thought the Level 2 would be satisfactory instead of spending the extra on a Magnum. That was a mistake 😕 in my decision making. Eventually, the 91 RS will get upgraded to a Magnum.