View Poll Results: Which engine combo to build?
Serious but streetable 383ci all stroke with AFR 225's
77
28.84%
402/408ci LS2 buildup with AFR 225's
190
71.16%
Voters: 267. You may not vote on this poll
Quick Poll.....
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From: Out on the farm in Central IL
Are you still planning a 346 build up with the 225 heads? I would like to see this as well. I for one, would like to see both ans I would like to swap out my 5.3 heads and LS6 intake for 225s and a fast 90 in preparation for a 402. A full long block is big $$ but if I can do this in 2 passes it gets more reasonable.
Originally Posted by Tony Mamo @ AFR
Guys...
If you had your choice, would you rather see a fairly serious (but streetable) 383 CID build up with AFR 225's, or would you have more of an interest in seeing a 402/408 LS2 block build up instead.
If you had your choice, would you rather see a fairly serious (but streetable) 383 CID build up with AFR 225's, or would you have more of an interest in seeing a 402/408 LS2 block build up instead.
Big Jimmy
How about both??
Just finished testing a 383 that I will be posting flywheel dyno results shortly (chassis dyno #'s in a month or so), and I have a 415 CID LS2 build-up on deck next (same bore as a 402 with a 4.125 stroke)....probably see some numbers on that combination towards the end of the year.
I am digging myself out from a week's vacation....as soon as I can string together a few minutes, I will try and put together all the information gathered in my latest round of testing and share it with you guys. We cleared 600 HP with only 383 inches and slightly less than 11 to 1 CR....Impressive for a high compression race engine of the same cubic inch not long ago. Look for that and a lot more info in the dyno section towards the tail end of the weelk (hopefully).
Tony M.
Just finished testing a 383 that I will be posting flywheel dyno results shortly (chassis dyno #'s in a month or so), and I have a 415 CID LS2 build-up on deck next (same bore as a 402 with a 4.125 stroke)....probably see some numbers on that combination towards the end of the year.
I am digging myself out from a week's vacation....as soon as I can string together a few minutes, I will try and put together all the information gathered in my latest round of testing and share it with you guys. We cleared 600 HP with only 383 inches and slightly less than 11 to 1 CR....Impressive for a high compression race engine of the same cubic inch not long ago. Look for that and a lot more info in the dyno section towards the tail end of the weelk (hopefully).
Tony M.
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Joined: Mar 2003
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Originally Posted by Tony Mamo @ AFR
How about both??
Just finished testing a 383 that I will be posting flywheel dyno results shortly (chassis dyno #'s in a month or so), and I have a 415 CID LS2 build-up on deck next (same bore as a 402 with a 4.125 stroke)....probably see some numbers on that combination towards the end of the year.
I am digging myself out from a week's vacation....as soon as I can string together a few minutes, I will try and put together all the information gathered in my latest round of testing and share it with you guys. We cleared 600 HP with only 383 inches and slightly less than 11 to 1 CR....Impressive for a high compression race engine of the same cubic inch not long ago. Look for that and a lot more info in the dyno section towards the tail end of the weelk (hopefully).
Tony M.
Just finished testing a 383 that I will be posting flywheel dyno results shortly (chassis dyno #'s in a month or so), and I have a 415 CID LS2 build-up on deck next (same bore as a 402 with a 4.125 stroke)....probably see some numbers on that combination towards the end of the year.
I am digging myself out from a week's vacation....as soon as I can string together a few minutes, I will try and put together all the information gathered in my latest round of testing and share it with you guys. We cleared 600 HP with only 383 inches and slightly less than 11 to 1 CR....Impressive for a high compression race engine of the same cubic inch not long ago. Look for that and a lot more info in the dyno section towards the tail end of the weelk (hopefully).
Tony M.
600fwhp is going to be more than 500hp to the tires (depending on setup). I knew it was coming. Any early reports on cam???
Last edited by SideStep; Sep 21, 2005 at 03:14 PM.
Originally Posted by Tony Mamo @ AFR
How about both??
Just finished testing a 383 that I will be posting flywheel dyno results shortly (chassis dyno #'s in a month or so), and I have a 415 CID LS2 build-up on deck next (same bore as a 402 with a 4.125 stroke)....probably see some numbers on that combination towards the end of the year.
I am digging myself out from a week's vacation....as soon as I can string together a few minutes, I will try and put together all the information gathered in my latest round of testing and share it with you guys. We cleared 600 HP with only 383 inches and slightly less than 11 to 1 CR....Impressive for a high compression race engine of the same cubic inch not long ago. Look for that and a lot more info in the dyno section towards the tail end of the weelk (hopefully).
Tony M.
Just finished testing a 383 that I will be posting flywheel dyno results shortly (chassis dyno #'s in a month or so), and I have a 415 CID LS2 build-up on deck next (same bore as a 402 with a 4.125 stroke)....probably see some numbers on that combination towards the end of the year.
I am digging myself out from a week's vacation....as soon as I can string together a few minutes, I will try and put together all the information gathered in my latest round of testing and share it with you guys. We cleared 600 HP with only 383 inches and slightly less than 11 to 1 CR....Impressive for a high compression race engine of the same cubic inch not long ago. Look for that and a lot more info in the dyno section towards the tail end of the weelk (hopefully).
Tony M.
Thats on pump gas with an 11.X CR and the TSP Giant Cam..
Originally Posted by SideStep
Any early reports on cam???
. following suit like the 346 build up the cam is quite mild for the combo, alot of guys are running more aggressive hyd. cams. i'll let Tony drop all the info though. LS1 Tech Stories
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Originally Posted by Tony Mamo @ AFR
Guys...
If you had your choice, would you rather see a fairly serious (but streetable) 383 CID build up with AFR 225's, or would you have more of an interest in seeing a 402/408 LS2 block build up instead.
If you had your choice, would you rather see a fairly serious (but streetable) 383 CID build up with AFR 225's, or would you have more of an interest in seeing a 402/408 LS2 block build up instead.
This is what I've been dreaming about day and night for the last few months....an LS2 w/ AFR 225 heads and......on SPRAY!!!
.
I vote for the LS2 but wonder if there would really be a whole lot of diffirence between the two if they where built exactly the same. A 402 with stock heads and cam probably wouldn't make much more power at all but would possibly do it at a lower RPM. Since the 225s wouldn't be restrictive then that wouldn't be the case and the 402 would make more hp but I bet the 383 would make about the same hp per cubic inch. I say do wich ever won you want and just be really specific on all the details.
guys, look at the date of the thread before replying. the 383 has been done and results can be found here:
https://ls1tech.com/forums/dynamometer-results-comparisons/384450-383-engine-dyno-results-graphs-included.html
https://ls1tech.com/forums/dynamometer-results-comparisons/384450-383-engine-dyno-results-graphs-included.html
Damn Jerami....
You beat me to the punch....LOL
For those who might have missed it, I will also be featuring results from a 415 CID LS2 build-up next, so essentially you will have info from both types of combinations. I expect alot more TQ and a little more HP from that engine (also a lower HP and TQ peak). I'm very much looking foward to that as well and the results should be interesting....look for that information in the beginning of 06' (amazing how time flies....).
Regards,
Tony
You beat me to the punch....LOL
For those who might have missed it, I will also be featuring results from a 415 CID LS2 build-up next, so essentially you will have info from both types of combinations. I expect alot more TQ and a little more HP from that engine (also a lower HP and TQ peak). I'm very much looking foward to that as well and the results should be interesting....look for that information in the beginning of 06' (amazing how time flies....).
Regards,
Tony
Starting from scratch and paying just a little extra for a new iron or aluminum block. I know the 415 would certainly be the route to take for more power. 
Last edited by gollum; Sep 26, 2005 at 05:30 PM.
TONY,GO WITH THE 402/408 BUILDUP -USE THE CUBES ,USE THE BORE I ASSUME THE HEADS WILL BE EQUIPED WITH 2.05/ 2.08 VALVES WHY BOTHER WITH A 3.900 OR 3.905 BORE. ESPECIALLY WITH THAT AIRFLOW POTENTIAL NOT TO MENTION THE THE STROGER BUILD OF AN LS2,ALSO THE BIGGER CAMSHAFT SELECTION POTENTIAL WITH A 402 COMPARED TO A 383. 