I need to choose a heads/cam combo for my Corvette hybrid...
10-31-2003, 12:46 PM
#1
TECH Fanatic
Thread Starter
iTrader: (1)
Join Date: Jan 2002
Location: Bartlett, IL
Posts: 1,879
Likes: 0
Received 0 Likes
on
0 Posts
I need to choose a heads/cam combo for my Corvette hybrid... I'm starting with a 2002 LS1. I want a lot of TORQUE! Torque is the magic word here so keeping that in mind, what would the 'ones who know' recommend?
I also want a very 'racey' idle. This is for my '63 Corvette so I want it to sound like an aggressive race car but be on the verge of streetable. Obviously, max horsepower is also wanted. Can I get over 500 naturally aspirated somehow without stroking it? How about a solid roller cam? I want it to be almost extreme. Recommendations?
2002 LS1
T56 trans.
I also want a very 'racey' idle. This is for my '63 Corvette so I want it to sound like an aggressive race car but be on the verge of streetable. Obviously, max horsepower is also wanted. Can I get over 500 naturally aspirated somehow without stroking it? How about a solid roller cam? I want it to be almost extreme. Recommendations?
2002 LS1
T56 trans.
11-01-2003, 12:18 PM
#4
FormerVendor
iTrader: (33)
Join Date: Feb 2002
Location: Lake in the Hills, IL
Posts: 5,052
Likes: 0
Received 0 Likes
on
0 Posts
It`s a 63 Vette NO! looking for TQ I would not go to a solid roller. To make torque use a smaller duration cam with a tighter intake center line coupled with a good set of low volume good flow hand ported heads we could build you the TQ monster you want. Let me know if you have any questions or if I can help get your project up and running.
Nate
Nate
11-01-2003, 01:32 PM
#6
TECH Fanatic
Originally Posted by Mark IXZD 150
I'm starting with a 2002 LS1. I want a lot of TORQUE! Torque is the magic word here so keeping that in mind, what would the 'ones who know' recommend?
I also want a very 'racey' idle. This is for my '63 Corvette so I want it to sound like an aggressive race car but be on the verge of streetable. Obviously, max horsepower is also wanted. Can I get over 500 naturally aspirated somehow without stroking it? How about a solid roller cam? I want it to be almost extreme. Recommendations?
2002 LS1
T56 trans.
I also want a very 'racey' idle. This is for my '63 Corvette so I want it to sound like an aggressive race car but be on the verge of streetable. Obviously, max horsepower is also wanted. Can I get over 500 naturally aspirated somehow without stroking it? How about a solid roller cam? I want it to be almost extreme. Recommendations?
2002 LS1
T56 trans.
What's the budget? How do you plan to get the torque/power to the ground? Why an LS1? You are familiar with what it takes to swap an LS1 into a '63 Vette, right?
Those questions need answers before recommendations. Budget is the biggie.
11-01-2003, 02:18 PM
#7
Trending Topics
11-01-2003, 04:48 PM
#8
TECH Fanatic
Thread Starter
iTrader: (1)
Join Date: Jan 2002
Location: Bartlett, IL
Posts: 1,879
Likes: 0
Received 0 Likes
on
0 Posts
No emissions restrictions at all.
I want it torquey so it'll be more fun to drive on the street. Yes, more low/mid-range. I'm not looking for the optimal drag racing car with high-end power range.
It'll be a weekend cruiser/show car/occaisional road racer. I really like the idea of the 111 lsa cam. That'll be music....
Any set of heads/cam is in the budget. I really don't want to spend money on the rotating assembly. Just the upper end. Let's say a 4K budget...
I've got all the info I need on putting in the '63 and I've done heads/cam before on the old SS. Street & Performance has all the goodies to make it run in the old car.
I'll be running 315 tires on the back so grip will be pretty good although I don't want to run drag radials . I'll probably go with Good Year Supercar F1's or the new F1 GS-D3's.
Someone at chirpthird suggested a TR230(230/224 .575/.563 111 ) cam and GTP stage 2 heads. How's that sound? I really want the combo to be right for the car since I'm putting so much time and money into it.
I want it torquey so it'll be more fun to drive on the street. Yes, more low/mid-range. I'm not looking for the optimal drag racing car with high-end power range.
It'll be a weekend cruiser/show car/occaisional road racer. I really like the idea of the 111 lsa cam. That'll be music....
Any set of heads/cam is in the budget. I really don't want to spend money on the rotating assembly. Just the upper end. Let's say a 4K budget...
I've got all the info I need on putting in the '63 and I've done heads/cam before on the old SS. Street & Performance has all the goodies to make it run in the old car.
I'll be running 315 tires on the back so grip will be pretty good although I don't want to run drag radials . I'll probably go with Good Year Supercar F1's or the new F1 GS-D3's.
Someone at chirpthird suggested a TR230(230/224 .575/.563 111 ) cam and GTP stage 2 heads. How's that sound? I really want the combo to be right for the car since I'm putting so much time and money into it.
11-02-2003, 11:19 AM
#9
8 second mod
iTrader: (37)
Join Date: Nov 2002
Location: East Side Performance! mASShole
Posts: 17,879
Likes: 0
Received 0 Likes
on
0 Posts
Im not sure of all the specs. But East Side has a NASTTYYYY HC package out right now. If you called and talked to them you can find somthing out.
My buddy has the ESP1 HC set up. The car sounds like an old muscle car, and this is threw cats and Muffler. It idles soooo nice, he drives it daily, and it makes 430+ rear wheel threw 12 bolt, full exhaust,and 4.10's With a safe tune.
Call them up>>>>>>>>>>>>>>>
My buddy has the ESP1 HC set up. The car sounds like an old muscle car, and this is threw cats and Muffler. It idles soooo nice, he drives it daily, and it makes 430+ rear wheel threw 12 bolt, full exhaust,and 4.10's With a safe tune.
Call them up>>>>>>>>>>>>>>>
11-02-2003, 01:16 PM
#10
TECH Fanatic
Originally Posted by Pro Stock John
500hp = 440rwhp
I'd look at something like a stage II head (bigger valves, flow 300 etc), and a big split pattern cam, something like a 230/240//111, that should lope a ton.
I'd look at something like a stage II head (bigger valves, flow 300 etc), and a big split pattern cam, something like a 230/240//111, that should lope a ton.
Of course, "low-mid" could mean 4000-6000.
11-02-2003, 01:32 PM
#11
TECH Fanatic
Thread Starter
iTrader: (1)
Join Date: Jan 2002
Location: Bartlett, IL
Posts: 1,879
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Pro Stock John
500hp = 440rwhp
I'd look at something like a stage II head (bigger valves, flow 300 etc), and a big split pattern cam, something like a 230/240//111, that should lope a ton.
I'd look at something like a stage II head (bigger valves, flow 300 etc), and a big split pattern cam, something like a 230/240//111, that should lope a ton.
11-03-2003, 09:55 AM
#12
TECH Fanatic
Originally Posted by Mark IXZD 150
Lope yes, but will it give me the performance factors I'm after? I also plan on running a Vintage Air A/C too so I need to keep that in mind. It needs to be able to idle without dying out all the time.
Give up the lopey idle, and the rest is doable as I said above. We're not talking a cheap installation here, BTW. You already know abot the cutting and fitting required, custom headers, etc ^2. If you haven't tried this yourself previously, it's not a DIY job.
Why not do all this with a standard SBC? Less cool looking but way less expensive.
My $.02
11-03-2003, 10:20 AM
#13
TECH Fanatic
Thread Starter
iTrader: (1)
Join Date: Jan 2002
Location: Bartlett, IL
Posts: 1,879
Likes: 0
Received 0 Likes
on
0 Posts
There won't be any cutting. It'll bolt right into the tube frame using some S&P engine mount adapter plates. Headers, yes, they'll be custom but believe it or not, the LS1 will be less expensive than the 383ci SBC route I was planning. I can give up 30mpg for the right sound. Right now my Caddy gets 17mpg so anything will be an improvement. Besides, with my hotrod, gas mileage really doesn't matter too much.
11-03-2003, 10:47 AM
#15
TECH Fanatic
Thread Starter
iTrader: (1)
Join Date: Jan 2002
Location: Bartlett, IL
Posts: 1,879
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Pro Stock John
How lopey do you want it?
11-03-2003, 11:01 AM
#16
TECH Fanatic
Originally Posted by Pro Stock John
How lopey do you want it?
It could be like the limp-home mode and alternate which cylinders don't get fuel. My LS1 in that mode really lopes! Barely moves, but lopes a lot. Of course a solenoid which opened up a vacuum leak might do the same thing, or at least add to the rough idle.Now here's a good use for variable cam phasing. Assuming a 2-cam in the block LSx engine, tighten the LSA up to get lots of overlap at idle and listen to it lope.
Hey, most of this ^^ is tongue-in-cheek. You can have the low-mid torque and good high power with decent heads, and fairly short, but aggressive lobes (319x Comp, for example).
My $.02
11-03-2003, 11:18 AM
#17
TECH Fanatic
Thread Starter
iTrader: (1)
Join Date: Jan 2002
Location: Bartlett, IL
Posts: 1,879
Likes: 0
Received 0 Likes
on
0 Posts
I know you're just having fun. I appreciate humor but hey, take it easy on me. Believe me, if you were spending as much money as I am on this car, you'd want it 'just right' too. It's not just about having a rough idle at all costs.
11-03-2003, 11:54 AM
#18
TECH Fanatic
Originally Posted by Mark IXZD 150
I know you're just having fun. I appreciate humor but hey, take it easy on me. Believe me, if you were spending as much money as I am on this car, you'd want it 'just right' too. It's not just about having a rough idle at all costs.
500 fwhp is in the cards, but 500 lb-ft is probably a little high @ 346 cubes without a power adder. You might ask Bret @ Bauer Racing (shameless plug for sponsor who's also a relative) about this. I'm thinking the new aftermarket intake and AFR heads, both of which are coming "real soon" like first quarter of '04. Bret's been working on this kind of LS engine.
If it's a GS clone, why the LS engine? Not that I think it's a bad idea; I really like modern tech in nostalgic cars. My idea would be what GM would do if they were to produce a repro '63 GS today. Is that close?
My $.02
11-03-2003, 12:20 PM
#19
LS1Tech Co-Founder
iTrader: (34)
Not sure how much old stroken is adding value here, but to answer your question, you might want to see what shows up at the Speed Inc. Group dyno at day that MFBA.org is holding on 11/15.
I think you need a cam with at least 6 degrees of overlap, and on a 111-112 lsa to get that old school lope. The firing order on the LS1 is different than a SBC, so it makes it hard to get that old sound.
I think you need a cam with at least 6 degrees of overlap, and on a 111-112 lsa to get that old school lope. The firing order on the LS1 is different than a SBC, so it makes it hard to get that old sound.
11-03-2003, 01:11 PM
#20
TECH Fanatic
Thread Starter
iTrader: (1)
Join Date: Jan 2002
Location: Bartlett, IL
Posts: 1,879
Likes: 0
Received 0 Likes
on
0 Posts
I appreciate everyones input.
I will probably pick Tom Izzo's brain too so maybe a visit that day would be a good idea. It sounds like 'm hearing a steady theme with some of these suggestions here so I may be real close to picking my combo.
Yes, basically the car is a modern (my) interpretation of a historic racer. It won't be a 'clone' in that sense of the word. There are already several Grand Sports that look like the originals. I'm building MY OWN version of one.
I will probably pick Tom Izzo's brain too so maybe a visit that day would be a good idea. It sounds like 'm hearing a steady theme with some of these suggestions here so I may be real close to picking my combo.
Yes, basically the car is a modern (my) interpretation of a historic racer. It won't be a 'clone' in that sense of the word. There are already several Grand Sports that look like the originals. I'm building MY OWN version of one.
