forged 408
10-28-2009, 05:13 AM
#1
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forged 408 well i sold my turbo kit and looking to spray my motor.....its a fully built 408 low comp at 8.85 w/243's, it does have a turbo cam, whats the limit on this iron 408 as far as spray goes 400 shot???
10-28-2009, 06:30 AM
#2
With the compression that low you probably can get away with a good bit, proper tuning/timing/a/f will be essential for big hits of that size.... cam change is definitely going to be needed to get it to work with that much as well I'd think.
What heads are on it, because you'll have issues lifting a stock type casting due to the thinner deck not sealing as well.
Turbo/supercharger's dont' tend to have the same problems with the motor that nitrous creates at the same power level. Meaning, a 408 that's making 650 to the tires yeah you'll be fine simply because the engine is big enough and pretty much any aftermarket parts will hold up to that level.
Try to push it towards 1000 hp, and you're in a different realm of issues, FI causes some, nitrous causes others.
What heads are on it, because you'll have issues lifting a stock type casting due to the thinner deck not sealing as well.
Turbo/supercharger's dont' tend to have the same problems with the motor that nitrous creates at the same power level. Meaning, a 408 that's making 650 to the tires yeah you'll be fine simply because the engine is big enough and pretty much any aftermarket parts will hold up to that level.
Try to push it towards 1000 hp, and you're in a different realm of issues, FI causes some, nitrous causes others.
10-28-2009, 06:31 AM
#3
I would talk to who you bought the rotating assembly from but I am sure you can spray 400 it everything is forged. A fairly basic set up from TS would hold up to a 200 shot all day long they told me. So if you have a high end set up I don't see why you couldn't easily run 350-450.
11-02-2009, 08:49 PM
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I would talk to who you bought the rotating assembly from but I am sure you can spray 400 it everything is forged. A fairly basic set up from TS would hold up to a 200 shot all day long they told me. So if you have a high end set up I don't see why you couldn't easily run 350-450.
11-02-2009, 11:09 PM
#5
my ? is why do you still have stock 241's i would at least spend 450 on some 243's. im also wondering if you have a stall? see the built tranny but no details on the stall. stall, 243s and a 200 shot would be a world of difference IMO. peopl overdo things sometime. if you start out with the max, where do you go a year from now when your tired of it. thats just me but there is my .02.
11-03-2009, 12:55 AM
#6
I would look into some heads before anything, with that low of compression your losing alot of power N/A. I dont know what your budget is but some L92's, or TSP stage 3 243's you would make nice hp if you can get the compression up to about 11:1.
I dont know what dish you have on your pistons and what cc heads it would take to bump your compression but I would look into that first. You might be able to trade shortblocks with someone looking to FI if you dont want to go into changing things on yours.
I dont know what dish you have on your pistons and what cc heads it would take to bump your compression but I would look into that first. You might be able to trade shortblocks with someone looking to FI if you dont want to go into changing things on yours.
11-03-2009, 04:21 PM
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Should hold it ok so long as the tune is there and the heads are clamped well. The turbo camshaft is interesting though. The bottom line is cylinder pressure is cylinder pressure. The motor doesnt give two ***** how it gets it so long as it does. With that much n2o there should be a **** load of it. Let us know how it turns out. I am curious about the valve timing and how that camshaft is going to react with that much of a hit on it and whether or not it will able to ingest all of it. Take care and good luck.
Jim C.
PS - What are the specs on the camshaft.
Jim C.
PS - What are the specs on the camshaft.
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11-05-2009, 10:33 PM
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my ? is why do you still have stock 241's i would at least spend 450 on some 243's. im also wondering if you have a stall? see the built tranny but no details on the stall. stall, 243s and a 200 shot would be a world of difference IMO. peopl overdo things sometime. if you start out with the max, where do you go a year from now when your tired of it. thats just me but there is my .02.
11-05-2009, 10:35 PM
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I would look into some heads before anything, with that low of compression your losing alot of power N/A. I dont know what your budget is but some L92's, or TSP stage 3 243's you would make nice hp if you can get the compression up to about 11:1.
I dont know what dish you have on your pistons and what cc heads it would take to bump your compression but I would look into that first. You might be able to trade shortblocks with someone looking to FI if you dont want to go into changing things on yours.
I dont know what dish you have on your pistons and what cc heads it would take to bump your compression but I would look into that first. You might be able to trade shortblocks with someone looking to FI if you dont want to go into changing things on yours.
11-05-2009, 10:38 PM
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Should hold it ok so long as the tune is there and the heads are clamped well. The turbo camshaft is interesting though. The bottom line is cylinder pressure is cylinder pressure. The motor doesnt give two ***** how it gets it so long as it does. With that much n2o there should be a **** load of it. Let us know how it turns out. I am curious about the valve timing and how that camshaft is going to react with that much of a hit on it and whether or not it will able to ingest all of it. Take care and good luck.
Jim C.
PS - What are the specs on the camshaft.
Jim C.
PS - What are the specs on the camshaft.