buiding a basic 30 over ls1
08-18-2005, 08:17 PM
#1
buiding a basic 30 over ls1 ok guys i have a 1998 ls1 with all bolt ons and a TNT 150 and runs around 7.2s at 99mph inthe 8th mile. what cams are hot right now and with a decent head job what can i expect on motor as far as rwhp and on the 150 shot. and i used srp and eagle stuff on a LT1 that i have which is blown and puts around 550 rwhp with 9psi and help from carolina auto masters with a good tune. anyways i have a few ideas but i would like to see what others are doing....thanks jake
08-18-2005, 08:29 PM
#2
Banned
Join Date: Jan 2004
Posts: 137
Likes: 0
Received 0 Likes
on
0 Posts
Most people are either re-sleeving to achieve more cubic inches or using 6.0 L iron blocks. I personally would just go with the iron block and spray it. But use the search button and you'll find everything you're looking for and more.
08-18-2005, 10:22 PM
#6
10 Second Club
iTrader: (12)
Join Date: Dec 2004
Location: Birmingham, Alabama
Posts: 2,034
Likes: 0
Received 0 Likes
on
0 Posts
Just get a iron 6.0 block, bore it .030 with forged flat tops, hbeam rods, and stock polished crank and spray the **** out of it..
You can build a nice 370ci engine with good pistons, rods, etc with a brand new 6.0 block for under $2500.. Throw a big cam in it and jug it all you want..
You can build a nice 370ci engine with good pistons, rods, etc with a brand new 6.0 block for under $2500.. Throw a big cam in it and jug it all you want..
Trending Topics
08-18-2005, 10:38 PM
#8
well i have talked to people for years about this stuff. but i was just gonna ask a few guys on here to see what you guys have been seeing and what you might be doing on your own combos. i mean is teh stock block not good enough for a basic rebuild??? just wondering why every body says to get it. i know its better but i want to save a lil money where i can. remember i have spent way too much money on the LT1 and just want a fast *** street car
08-18-2005, 10:54 PM
#9
Bluebeast..
It's not a block issue. There have been several guys that have run in the 8's on a production block. The big problem is that you can't bore it due to it being an alum block with thin iron sleeves. There are plenty of people either spraying the pis out of a 348, or putting some nice PSI through them with either a blower or turbo set up.
If you bore an alum 5.7 LS1 more than .005-.008 your asking for trouble. But even a clean up hone, some good pistons, rods and bolts, you can spray the **** out of it. Even the stock crank will hold up.
It's not a block issue. There have been several guys that have run in the 8's on a production block. The big problem is that you can't bore it due to it being an alum block with thin iron sleeves. There are plenty of people either spraying the pis out of a 348, or putting some nice PSI through them with either a blower or turbo set up.
If you bore an alum 5.7 LS1 more than .005-.008 your asking for trouble. But even a clean up hone, some good pistons, rods and bolts, you can spray the **** out of it. Even the stock crank will hold up.
08-18-2005, 10:54 PM
#10
Hone your stock block .005", have your stock crank turned and nitrited, have your stock rods shot peened, checked out and get some ARP rod bolts, and buy some decent forged pistons for the over bore. The stock block is fine for the rebuild. Get a fair sized cam, TSP 233/239, G5X3, or thunder 230/236, and a set of TEA 1.5 ported heads. You should see well over 400 rwhp, prolly 425-450 with a 6-speed as long as you have the accompanying mods. Add 150hp for your spray numbers.
08-18-2005, 11:05 PM
#12
well i plan on getting new rods, pistons and just using the stock crank. i am looking into some light weight forged pistons. now i was just saying 30 over cause i figured that was a base bore to clean the walls. the motor aint even blown so i guess a small bore clean up will do fine. i mean i know i wasnt really getting any extra power from goinf 30 over anyways....maybe 1 rwhp lol
08-18-2005, 11:08 PM
#13
as for the heads i am getting a decent head job from a well known engine and head guy around here. was a head mechanic from clements race motors in spartanburg south carolina..... they do mostly big drag motors and dirt track stuff...........im from greenville south carolina by the way and my name is jake
08-18-2005, 11:17 PM
#14
jake... this is red02fbod from ur local board.. hes a friend of mine i guess u could say.. and hes primarily a lt1 guy..
jake.. the stock bore is like 3.898.. u cant go above 3.905 safely.. dont worry, all ur wanting is to use the stock crank, aftermarket rods and pistons.. nobody really sales a aftermarket pistons for a ls1block that is bigger then 3.905... it will hold until the block cracks b/t 700 and 900 hp.. i think thisi s plenty for what ur looking for.. and dyer or dave jefferson should know this.. this is common knowledge of the ls1
some cams to consider as ive told ya - lg motorsports, futral, tsp, thunder just to name a few.. i would also consider letting them do ur headwork to match the cam instead of dyer motorsports as he might deck the heads ect adn well run into potential pvc problems or just not have it matched up right since he mainly specializes in sbc's..
these guys on here are giving u good advice and can really help to make ur car one of the baddest around if u listen to them that is for sure.. with ur budget and income that shouldnt' be a problem man if u got the time and money they've got the knowledge to make it happen..
along with this convient sponsor list--------------------------------->
to the right there. just clikc on sites like futral tsp thunder and others and read about there cams.. when u get more of an idea what ur looking for, get the phone #'s of those sites and call them, they may even hook u up with something specifically for ur application not listed on there site.. always call, it never hurts to ask!
lata
jp
jake.. the stock bore is like 3.898.. u cant go above 3.905 safely.. dont worry, all ur wanting is to use the stock crank, aftermarket rods and pistons.. nobody really sales a aftermarket pistons for a ls1block that is bigger then 3.905... it will hold until the block cracks b/t 700 and 900 hp.. i think thisi s plenty for what ur looking for.. and dyer or dave jefferson should know this.. this is common knowledge of the ls1
some cams to consider as ive told ya - lg motorsports, futral, tsp, thunder just to name a few.. i would also consider letting them do ur headwork to match the cam instead of dyer motorsports as he might deck the heads ect adn well run into potential pvc problems or just not have it matched up right since he mainly specializes in sbc's..
these guys on here are giving u good advice and can really help to make ur car one of the baddest around if u listen to them that is for sure.. with ur budget and income that shouldnt' be a problem man if u got the time and money they've got the knowledge to make it happen..
along with this convient sponsor list--------------------------------->
to the right there. just clikc on sites like futral tsp thunder and others and read about there cams.. when u get more of an idea what ur looking for, get the phone #'s of those sites and call them, they may even hook u up with something specifically for ur application not listed on there site.. always call, it never hurts to ask!
lata
jp
08-18-2005, 11:49 PM
#16
Originally Posted by LIL SS
LS1_PNYTAMR
I'm sure there have been blocks that haven't held up to some people punishment but to say 700-900hp, where do you get that figure? There are have been several cars that prove that number wrong. Harlan for instance..
I'm sure there have been blocks that haven't held up to some people punishment but to say 700-900hp, where do you get that figure? There are have been several cars that prove that number wrong. Harlan for instance..
ls1speed said 800 or so is where i need to start worrying.. other companies said 700, others said 800+.....
im planning on building a 346 very soon with a huge shot of gas, and someday the 12 bolt th400 to go with it myself... i think the stock block can be pushed well into the 8's in the 1/4 ofcourse.. i was just letting jake no he doesn't need to worry about breaking that block.. cuase at worst case scenario the stock ls1 block should laugh at 700rwhp...
which in his case i think hes looking for maybe 400 on motor and a 200 shot which would prolly hold up for a while on the stock bottom end with a good tune, unfortunatley, his is already fucked.. rings that is
08-18-2005, 11:51 PM
#17
hell u see my sig... im planning on trying those 250 jets soon enuff both on the stock bottom end, stock rearend, and rebuild 4l60e...
im all about pushing things to there limits.. i was just telling him he doesn't need to use the money yet on a 6.0 liter block to meet his goals
im all about pushing things to there limits.. i was just telling him he doesn't need to use the money yet on a 6.0 liter block to meet his goals
08-18-2005, 11:56 PM
#18
Bluebeast. Are you the guy that used to run at Greer? Loudmouth exhaust? Go through 3 gears in the waterbox, lol?
What kind of work is Clements gonna do for you? I talked to some guy from there and asked if they had a cnc program for an LS1 head and he said no but he had a LS1 head already ported but needed to make the program for it on the CNC machine. He said they do not have a big enough demand for it to make it happen right now.
What kind of work is Clements gonna do for you? I talked to some guy from there and asked if they had a cnc program for an LS1 head and he said no but he had a LS1 head already ported but needed to make the program for it on the CNC machine. He said they do not have a big enough demand for it to make it happen right now.
08-19-2005, 12:24 AM
#19
TECH Senior Member
iTrader: (18)
Join Date: Jun 2002
Location: NW Houston, TX
Posts: 10,036
Likes: 0
Received 0 Likes
on
0 Posts
If you want to go a little bit extreem you can go solid roller. When my engine gets hydrolocked from some freak storm or I blow it doing something I shouldnt be doing, I want to build a high compression 388 solid roller. It may be a 348, but it will be a SR.
08-19-2005, 08:49 AM
#20
welll gerald dyer was there top machine man. he went on his own and started his own buisness, which is dyer race motors. he is a great guy and can make a NA carb car go in the low 5s which is good i guess. his motors hold up well and mine has around 3,000 miles on it an running great and put some pretty good numbers up for a basic 355 ci with a mild cam some regular head work on stock castings and 9psi..........put around 550 rwhp with fuel issues beacuse of the shitty T REX pump that came with it. ran out of fuel seeing it only puts 195 lpho and i needed around 255 which i have now. should get an extra 35 to 50 rwhp withe the extra fuel and timing to add...............now this ls1 should be alot easier and fun to have built