Is the price of an LT1-->LT4 Conversion really worth 45 HP?
04-10-2003, 03:40 PM
#16
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Originally posted by Dave88LX
Nobody would happen to have any dyno graphs would they? Specifically stock LT1, and LT1 w/ the LT4 hotcam.
East Bridgewater huh? Sweet, I grew up in Bridgewater, graduated from B-R in '98. If you know or see Dominic Buccella tell him he's a mo-f'ing dumbass and he deserves to get his *** kicked AGAIN.
Nobody would happen to have any dyno graphs would they? Specifically stock LT1, and LT1 w/ the LT4 hotcam.
East Bridgewater huh? Sweet, I grew up in Bridgewater, graduated from B-R in '98. If you know or see Dominic Buccella tell him he's a mo-f'ing dumbass and he deserves to get his *** kicked AGAIN.
04-10-2003, 04:17 PM
#17
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I appreciate the suggestion of the 383, but that is WAY out of budget...I've got a 351 I need to build up 
Just curious, what's stock, and what's aftermarket/custom in a 383? For instance a Ford 393 will use I believe custom crank, 351 rods, and a 302 piston...
This is just a stock rebuild prett much. Don't want to buy new crank, rods etc. I've hit a 13.9 @ 100 so far on street tires. Not a bad little car
Just curious, what's stock, and what's aftermarket/custom in a 383? For instance a Ford 393 will use I believe custom crank, 351 rods, and a 302 piston...
This is just a stock rebuild prett much. Don't want to buy new crank, rods etc. I've hit a 13.9 @ 100 so far on street tires. Not a bad little car
04-10-2003, 04:20 PM
#18
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Originally posted by RealQuick
haha...nice to see some local guys. The name is very famaliar, but I cant figure out where I heard that name before.
haha...nice to see some local guys. The name is very famaliar, but I cant figure out where I heard that name before.
[off topic]
He graduated the same time I did I believe. He used to drive around in a big jacked-up Ford Ranger, always hung out at Dunkin' Donuts in Bridgewater at Campus Plaza. Hung out w/ some dude in a big red/grey Bronco, w/ a few other punks. Just your local townie troublemaker is what he was. I should have beat the **** out of him the first time he came after me but I resisted. I'd like another shot at him still to this day, 5 years after the 1st incident
[/off topic
04-10-2003, 05:07 PM
#20
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HotCam kit is worth the money. For what you get it is a great improvement. The heads are not worth it. I just had my LT1 heads worked on. But the money for the HotCam kit was worth it to me. Cam, spring, RR, etc.... worth the money. Can get more power out of bigger cam but have to spend more. The kit made it a easy buy for me. The intake and heads, save the money and get your stock intake and heads worked on.
04-10-2003, 06:39 PM
#21
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I wanted to chime in here the complete LT4 conversion kit will give your car 430+ horses depending on your other mods---thats the whole kit cam-heads-intake-pcm all gaskets look up the test mules they did on the conversion it is a proven horse builder. The kit is 2800.00 from pace and they pretty much sold me they also said they would send me backed up claims of the power (let's see if they do)
04-10-2003, 07:34 PM
#22
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who ever told you that the complete LT4 kit(heads,cam,intake) was only worth 45 ponies is dead wrong. Do some research and you'll find this conversion producing nearly 400 at the wheels. I've seen cars with this set up running mid to low 12's at the track.
04-10-2003, 07:54 PM
#23
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Originally posted by blownbird01
who ever told you that the complete LT4 kit(heads,cam,intake) was only worth 45 ponies is dead wrong. Do some research and you'll find this conversion producing nearly 400 at the wheels. I've seen cars with this set up running mid to low 12's at the track.
who ever told you that the complete LT4 kit(heads,cam,intake) was only worth 45 ponies is dead wrong. Do some research and you'll find this conversion producing nearly 400 at the wheels. I've seen cars with this set up running mid to low 12's at the track.
I don't want to do too much research...I need to keep it in the back of my mind "Ewwwwwwwww, Chebby's blech!
"
04-10-2003, 09:35 PM
#24
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As far as the 383 goes, nothing is really "stock" except the rods. (dunno how strong those are either) Course if you can find a stock 400 crank (3.75 stroke) you can use that. There should be some floating around, a steel crank would be fine if you get it balenced for an LT-1 (or all internally balenced)
If your good at building yourself it doesn't really cost a whole hell of a lot. Maybe somethign to look into
The setup I have is 3.75 stroke, by 4.030 bore (350 with a .030 bore) and a 5.7 rod.
If you want more stroke you can also get a 6 inch rod, but i don't think it would make much more of a difference in horsepower numbers, just a little more torque.
I think that answered your question
If your good at building yourself it doesn't really cost a whole hell of a lot. Maybe somethign to look into
The setup I have is 3.75 stroke, by 4.030 bore (350 with a .030 bore) and a 5.7 rod.
If you want more stroke you can also get a 6 inch rod, but i don't think it would make much more of a difference in horsepower numbers, just a little more torque.
I think that answered your question
04-10-2003, 11:23 PM
#25
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My LT4 SS rolled 311rwhp 325rwtq on our Dynojet with an oil change and dyno-tune.
According to Scott Settlemiere (the person responsible for making the LT4 F-body happen) , the LT4 SS's had stock LT1 cams, because they couldn't pass emissions with the LT4 cam.
IMO it is more cost effective to port the stock LT1 heads rather than replace them with LT4's.
According to Scott Settlemiere (the person responsible for making the LT4 F-body happen) , the LT4 SS's had stock LT1 cams, because they couldn't pass emissions with the LT4 cam.
IMO it is more cost effective to port the stock LT1 heads rather than replace them with LT4's.
04-11-2003, 01:11 AM
#26
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There are a few people on here that did the complete conversion with the regular bolt-ons and rolled over 350rwhp. The highest I've heard so far is about 370ish. With a bigger cam, since the heads can handle much larger cams, I can't see why the LT4 heads wouldn't produce over 400rwhp untouched.
If you plan to go crazy with hp in the future, go ahead and grab some AFRs. The 195s are the same CC as the LT4s and they'll be a great choice since they can take a ton of porting with the added meat cast into them. They'll take you about as far as a street car can go. Go with the 210s or 220s if you want to make INSANE power in the future.
If you plan to go crazy with hp in the future, go ahead and grab some AFRs. The 195s are the same CC as the LT4s and they'll be a great choice since they can take a ton of porting with the added meat cast into them. They'll take you about as far as a street car can go. Go with the 210s or 220s if you want to make INSANE power in the future.
04-11-2003, 01:33 AM
#27
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Dave I think you are missing the fact that there is a lt4 STOCK cam, which came STOCK in lt4 cars ( 96 vettes and Very few lt4 f-bodies ), which is a very small emissions legal cam, compared to the LT4 HOT CAM which is much larger and makes much more power.
At the crank an lt4 heads,HOT cam setup will make 420hp+.
lt4 cam : small
lt4 HOT cam : BIG
At the crank an lt4 heads,HOT cam setup will make 420hp+.
lt4 cam : small
lt4 HOT cam : BIG
04-11-2003, 01:40 AM
#28
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Originally posted by grygst76
The kit is 2800.00 from pace and they pretty much sold me they also said they would send me backed up claims of the power (let's see if they do)
The kit is 2800.00 from pace and they pretty much sold me they also said they would send me backed up claims of the power (let's see if they do)
04-11-2003, 08:23 AM
#29
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Originally posted by Dr.Mudge
My heads/cam parts, TB etc all cost less than that, and made more power.
My heads/cam parts, TB etc all cost less than that, and made more power.
04-11-2003, 10:28 AM
#30
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Originally posted by lt1form
Dave I think you are missing the fact that there is a lt4 STOCK cam, which came STOCK in lt4 cars ( 96 vettes and Very few lt4 f-bodies ), which is a very small emissions legal cam, compared to the LT4 HOT CAM which is much larger and makes much more power.
At the crank an lt4 heads,HOT cam setup will make 420hp+.
lt4 cam : small
lt4 HOT cam : BIG
Dave I think you are missing the fact that there is a lt4 STOCK cam, which came STOCK in lt4 cars ( 96 vettes and Very few lt4 f-bodies ), which is a very small emissions legal cam, compared to the LT4 HOT CAM which is much larger and makes much more power.
At the crank an lt4 heads,HOT cam setup will make 420hp+.
lt4 cam : small
lt4 HOT cam : BIG
Correct, I just pulled my cam out of my LT4 and it isn't a stock LT1 cam, it is the standard lt4 (non-hot) cam.
As far as the LT4 conversion making 425 hp I would have to say there is a lot more to the equation. As my car sits rate now I will be very happy with 350hp to the wheels. It may go on the dyno tomorrow. I will let you know.