Big Block or LS series motor

busterrm

busterrm

solid fixture here in the forum
Okay, a friend is wanting my help building a motor for his strip car.
Its a 73 Camaro, wt is 3000# with driver, rear gear is 4:11, not sure what tranny but is a manual tranny. Which do you guys think would be wiser, Big Block or LS series. He has a 454 block already. He is wanting 700 hp area to be the result.
 
both choices can be valid here, the LS will tend to be lighter weight and easier to install ,if you can get a really good deal on a salvage yard engine that might be a good route,but the parts for the big block will be easier to find used or at bargain priced.
personally ID go big block because hes already go the block,and be aware that 700 hp is not all that cheap and easy to reach in either case but its reachable. you can make a bit more hp per cubic inch with a properly set up LS engine due to the 40 year newer head design technology , but theres no way you can build a 496 cubic inch ls nearly as cheaply as a big block chevy and with a goal of 700hp Id go big block
https://www.hotrod.com/articles/max-overbore-for-ls-blocks/
blueprint engine blocks
https://www.jegs.com/v/Blueprint-En...brand&storeId=10001&catalogId=10002&langId=-1

DART BLOCKS
http://dartheads.com/product-category/big-block-chevy/blocks/

world products blocks
https://www.billmitchellproducts.com/engine-blocks/

G.M. performance
https://www.gmperformancemotor.com/category/LS196.html

these threads should help

LS Oil Pump Specifications 1.jpg


http://garage.grumpysperformance.com/index.php?threads/chevy-ls1-related-info.3918/#post-42797

http://www.hotrod.com/how-to/engine/1507-1968-camaro-461-inch-rhs-ls-engine-build-and-dyno/

http://www.chevythunder.com/gen_iv_engine_family.htm

http://www.dragzine.com/tech-stories/engine/ultimate-guide-to-budget-bbc-cylinder-heads-under-2000/

viewtopic.php?f=69&t=5123

viewtopic.php?f=69&t=189

http://www.hotrod.com/how-to/engine/150 ... yle-block/

viewtopic.php?f=69&t=6907&p=41239&hilit=threads+series#p41239

http://www.shafiroff.com/sportsman/555_900.asp
hard to beat the power vs value in a well built big block


DO YOU REMEMBER READING THESE ARTICLE'S?
salvage yard turbo LS builds are some thing that you might choose to look up and explore, keep in mind its NOT ABOUT PEAK POWER, but the POWER TO WEIGHT RATIO!
and you can use turbos or a stroker kit on a big block combo as well.

Cylinder Heads and Casting Numbers

Briggs told us that “The 317 casting number truck head is pretty hard to beat. It’s actually a pretty good head when it comes to boost because of the bigger combustion chamber.” We checked the 317 casting number flow numbers out and found that they are pretty much the same flow as the LS6 heads. For a budget friendly junkyard build, these heads are a pretty good deal, but only if you are planning on using a power adder like a turbo or supercharger.

An LS6 style head is good for naturally aspirated applications because of the smaller combustion chamber. L92 cylinder heads have become very popular additions to the LQ4/LQ9 iron truck blocks because of their flow. The L92 heads have proven themselves to be rockets based on the racing influenced design of the heads which have raised runner floor and wider port opening by virtue of an offset intake pushrod. Golen believes that “it’s worth the time and effort to find a set of L92 heads for your cast iron block. There are big horsepower gains that can be made with that combination.”

Here’s a quick rundown on the LS cylinder heads by casting numbers:

Casting Number 12564241 or 12559853




    • 1997-2003 LS1 Passenger Cars
    • Aluminum
    • Combustion Chamber Volume: 66.67cc
    • Compression Ratio: 10.1:1
    • Intake Port Volume: 200cc
    • Exhaust Port Volume: 70cc
    • Intake Valve: 2.00”
    • Exhaust Valve: 1.55”
    • Part #12559853 (1997-2000), 12564241 (2001-2003)
Casting Number 12564243




    • 2001 LS6 Passenger Car
    • Aluminum
    • Combustion Chamber Volume: 64.45cc
    • Compression Ratio: 10.5:1
    • Intake Port Volume: 210cc
    • Exhaust Port Volume: 75cc
    • Intake Valve: 2.00”
    • Exhaust Valve: 1.55”
    • Part #12564243
Casting Number 12562317 or 12572035




    • 2001-2004 LQ4/LQ9 equipped truck
    • Material: Aluminimum
    • Combustion Chamber Volume: 71.06cc
    • Compression Ratio: 10:1
    • Intake Port Volume: 210cc
    • Exhaust Port Volume: 75cc
    • Intake Valve: 2.00 inches
    • Exhaust Valve: 1.55 inches
    • Part Number: 12572035
Casting Number 12561873




    • 1999-2000 LQ4 equipped truck
    • Material: Cast Iron
    • Combustion Chamber Volume: 71.06cc
    • Compression Ratio: 9.5:1
    • Intake Port Volume: 210cc
    • Exhaust Port Volume: 75cc
    • Intake Valve: 2.00 inches
    • Exhaust Valve: 1.55 inches
Casting Number 12561706 or 12559852




    • 1999-2004 LR4 equipped truck
    • Material: Aluminum
    • Combustion Chamber Volume: 61.15cc
    • Compression Ratio: 9.5:1
    • Intake Port Volume: 200cc
    • Exhaust Port Volume: 70cc
    • Intake Valve Diameter: 1.89 inches
    • Exhaust Valve Diameter: 1.55 inches
    • Part Number: 12559852, 12561706
Casting Number 12558806 or 933




    • 1997-1998 LS1 (Perimeter Bolt) Passenger Car and Corvette
    • Material: Aluminum
    • Combustion Chamber Volume: 66.67cc
    • Intake Port Volume: 200cc
    • Exhaust Port Volume: 70cc
    • Intake Valve Diameter: 2.00 inches
    • Exhaust Valve Diameter: 1.55 inches
Casting Number 2716 and 5364




    • 2008+ LS3/L92 Passenger cars and Corvette
    • Material: Aluminum
    • Combustion Chamber Volume:68.4cc
    • Intake Port Volume:257cc
    • Exhaust Port Volume:86cc
    • Intake Valve Diameter:2.165 inches
    • Exhaust Valve Diameter:1.59 inches
GM Engine Vin Codes
Anyone going out looking for a 4.8L or 5.3L Truck based LS engine that has already been removed from the vehicleBeware, Because unless you can look into the spark plug hole with a scope or little camera to see the top of the piston or insert a wire and run it across the piston surface to feel if it's dished or a flat top It's hard to tell the difference between those two. However if you look for the 8th digit in the VIN It will tell you most everything you need to know.

1999-2006 Trucks, Vans & SUV
4.3L, VIN. X or W(2003+) (8th digit)
6.0L, VIN. U (8th digit), (LQ4) Trucks, Vans and Denali
6.0L, VIN. N (8th digit) (LQ9) Escalades & SS Silverado
4.8L, VIN. V (8th digit)
5.3L, VIN. T (8th digit, opt LM7)
5.3L, VIN. Z (8th digit, opt L59)
5.3L, VIN. B (8th digit, opt L33 05+ HO Aluminum and Iron Block with 243/799 heads)

2007+ Trucks
classic body style, 6.0L, VIN. U (8th digit, opt LQ4), Compressed Natural Gas and Gasoline
classic body style, 6.0L, VIN. N (8th digit, opt LQ9)
classic body style, 4.8L, (VIN. V, 8th digit, opt LR4)
classic body style, 5.3L, VIN. T (8th digit, opt LM7)
classic body style, 5.3L, VIN. Z (8th digit, opt L59)
classic body style, 5.3L, VIN. B (8th digit, opt L33)
classic body style, 4.3L, (VIN. X, 8th digit, opt LU3)

new body style, 5.3L, (VIN. 0, 8th digit, opt LMG)
new body style, 5.3L, (VIN. J, 8th digit, opt LY5)
new body style, 5.3L, (VIN. 3, 8th digit, opt LC9)
new body style, 5.3L, (VIN. M, 8th digit, opt LH6)
new body style, 6.0L, (VIN. Y, 8th digit, opt L76)
new body style, 4.3L, (VIN. X, 8th digit, opt LU3)
new body style, 4.8L, (VIN. C, 8th digit, opt LY2)

5.3L
2003-04 GMC Truck Envoy XL
2003-04 Isuzu Ascender
2003-04 Chevy TrailBlazer EXT (all with VIN "P", 8th digit)
2005-06 (all with VIN "M", 8th digit)


READ THE LINKED INFO CAREFULLY

http://www.superchevy.com/how-to/engine ... owerhouse/

http://www.superchevy.com/how-to/engine ... /dyno.html

OR

http://www.superchevy.com/how-to/engine ... vy-hitter/

or

http://www.hotrod.com/articles/late-model-gm-v8-engines/

http://www.superchevy.com/how-to/engine ... sa-rocket/

http://www.castingnumbers.info/site/browse/m/chevrolet/p/12

https://ls1tech.com/forums/conversions-hybrids/1369110-lsx-engine-identification.html

https://sites.google.com/site/sloppywik ... ardturbols

http://www.superchevy.com/how-to/projec ... tive-fuel/

http://www.superchevy.com/how-to/engine ... vy-hitter/

http://www.superchevy.com/how-to/projec ... s-salvage/

http://oppositelock.jalopnik.com/how-to ... 1131506504

http://www.superchevy.com/how-to/projec ... t#cxrecs_s

http://www.superchevy.com/how-to/0901gm ... t#cxrecs_s

http://www.superchevy.com/how-to/projec ... t#cxrecs_s

http://www.dragzine.com/tech-stories/10 ... ls-engine/

http://www.hotrod.com/how-to/engine/hrd ... e-install/

http://www.hotrod.com/news/1409-racing- ... mber-2014/

http://www.hotrod.com/how-to/engine/150 ... rful-ever/
 
Last edited by a moderator:
Wow Grumpy, I saw some combos in those links that are not as radical as I thought I would need to get to reach 700 hp. Oh I forgot to say this is not going to be a street car. Its only run at the strip. Really surprised me that some of those engines got close to 700 with only a 850 cfm carb on them. With his 3000lb camaro and 411 rear gear 850cfm could probably do it, It is a manual tranny also.
 
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