I finally got the small-block out my chevelle and after some minor freshening up it will go into an s-10 pick-up truck. The transmission that I will be using is a powerglide because that is what I have laying around. I have heard that automatics prefer a wide LSA while manuals prefer a narrow LSA. Is this also true with a powerglide? The truck will be mostly a beater and will see the strip occasionally. I have several cams that I could use. The cam that is in it now is a 106 LSA. The one that it replaced was a 112 LSA. Any input? Thanks.
Converters and LSA
1 - 20 of 29 Posts
I know thats what they say but our data with small blocks has been different
With the automatic small blocks like 106° usually and sticks like 108° usually in every small block we have raced. With a stick the wider lobe center allows you to add rear gear for an unreal launch and will ET best, An automatic likes the gear with small blocks, with an automatic you run alot of duration on tight lobe centers such as 106° and the added duration makes big HP and MPH
Just to give you an idea of how we run the small blocks, a 331 or 355 with high compression runs great with this following 106° lobe center cam, we do not advance it, we install it at 106°. It ET's best with 7,800rpm shifts {shift light set to 7,400} and 8,100rpm past lights in 355 and 8,300-8,400rpm in 331's, no higher than 7,800rpm shift. Will run 119-122mph in a full dressed 331-355 chevelle with 5.14 rear {28" tires} or 5.38 gears with 30" tires, must use a 6,000rpm transbrake stall and leave no less than 5,500rpm for best ET, It will put a 3,700 pound race weight in the 10's
If you run a single four barrel use a 750-830, if you use a tunnel ram use two 660's on a 331 and two 750 annular boosters on a 355, 1 3/4" headers, 13:1 compression
http://www.lunatipower.com/Product.aspx?id=1802&gid=249
This is a proven combo that has been used a few times in the past, and will be employed this winter into next year
If you run a single four barrel use a 750-830, if you use a tunnel ram use two 660's on a 331 and two 750 annular boosters on a 355, 1 3/4" headers, 13:1 compression
http://www.lunatipower.com/Product.aspx?id=1802&gid=249
This is a proven combo that has been used a few times in the past, and will be employed this winter into next year
This is a little too radical for what I wanting. I guess I will leave the 106 LSA in there and whatever it runs it runs. This is the same motor that ran 12.6 in my chevelle with the exception of a larger solid lifter cam and of course it will have the powerglide versus the T-350. What is the determining factor for stall speed? Duration at .050 or advertised duration?
List the complete engine combo and cam specs
But tractor gears and little motors are funI'm glad I dont have to leave at 6k with tractor gears to run 10's. The very reason I run a big block
The 406 runs a much milder combo and run 10's. The camaro is getting a radical 505cid next year, we are building it now If the other car is lighter than the chevelle it will most likely stall less
Correct it was a 3,000 stall. I don't think i can use it with the glide though. I do have a 2,400 stall for the glide but may want to get it restalled to something higher.
The glide will make it gain some stall due to not as low of a gear in low, the lighter weight of the s10 will make it stall less, it will probally stay the same
If he installed the identical grind to the 112° that came out of it, the stall will go up a little due to increased TQ
355 cid
11.4 to 1 compression
holley aluminum heads with 2.02/1.6 valves
1.5 roller rockers
holley street dominator
770 cfm holley carb.
msd ignition
1 5/8" headers
401B5LUN: 285/295 252/[email protected], .525"/.525" 106 LSA.
11.4 to 1 compression
holley aluminum heads with 2.02/1.6 valves
1.5 roller rockers
holley street dominator
770 cfm holley carb.
msd ignition
1 5/8" headers
401B5LUN: 285/295 252/[email protected], .525"/.525" 106 LSA.
4,000rpm stall with that cam would be perfect, thats probally a 6,000rpm shift cam
1 - 20 of 29 Posts
