How does this engine deal look?
Thread Starter
Safety Car
Joined: Oct 2004
Posts: 3,725
Likes: 5
From: Minnesota
How does this engine deal look?
What do you guys think about trying one of these in my 75.
http://www.jegs.com/cgi-bin/ncommerc...21&prmenbr=361
It basically just has a different cam than the $1400 base engine. I know it's not exactly a 383 stroker but I'm trying to stay on a budget.
I've got the hooker headers and side exhaust and an Edelbrock Performer 1406 carb on my old engine. I'd probably go with a Performer intake and scrap the old Torker I.
What kind of real #'s do you think I would end up with? Thanks!
http://www.jegs.com/cgi-bin/ncommerc...21&prmenbr=361
It basically just has a different cam than the $1400 base engine. I know it's not exactly a 383 stroker but I'm trying to stay on a budget.
I've got the hooker headers and side exhaust and an Edelbrock Performer 1406 carb on my old engine. I'd probably go with a Performer intake and scrap the old Torker I.
What kind of real #'s do you think I would end up with? Thanks!
Thread Starter
Safety Car
Joined: Oct 2004
Posts: 3,725
Likes: 5
From: Minnesota
Tell me if this is about how you calculate RWHP. I assume the 290 HP is SAE gross. If you figure 20% (?) loss from gross to net that brings it down to about 232 HP at the flywheel. Then if you figure about 15% (?) loss for the driveline for an auto you get about 197 RWHP.
What RWHP do you think I would get out of my old L48 if I rebuild it with the Performer carb and intake and hooker exhaust with a cam similar to the 12499529's and the stock heads and 9.0 CR?
What RWHP do you think I would get out of my old L48 if I rebuild it with the Performer carb and intake and hooker exhaust with a cam similar to the 12499529's and the stock heads and 9.0 CR?
Instructor
Joined: Dec 2003
Posts: 129
Likes: 0
From: Rio Medina Texas
I think you will be much happier with the 330hp 350 HO. Much better heads and if you wanted to add more cam later you can improve on the numbers. You were going to get an intake anyway.
http://www.jegs.com/cgi-bin/ncommerc...27&prmenbr=361
http://www.jegs.com/cgi-bin/ncommerc...27&prmenbr=361
Le Mans Master
Joined: Feb 1999
Posts: 8,351
Likes: 75
From: Tampa Bay FL
Originally Posted by jdmick
Tell me if this is about how you calculate RWHP. I assume the 290 HP is SAE gross. If you figure 20% (?) loss from gross to net that brings it down to about 232 HP at the flywheel. Then if you figure about 15% (?) loss for the driveline for an auto you get about 197 RWHP.
What RWHP do you think I would get out of my old L48 if I rebuild it with the Performer carb and intake and hooker exhaust with a cam similar to the 12499529's and the stock heads and 9.0 CR?
What RWHP do you think I would get out of my old L48 if I rebuild it with the Performer carb and intake and hooker exhaust with a cam similar to the 12499529's and the stock heads and 9.0 CR?
Team Owner
Joined: Sep 2003
Posts: 88,393
Likes: 2
From: eville in
Originally Posted by soggybottomboy
I think you will be much happier with the 330hp 350 HO. Much better heads and if you wanted to add more cam later you can improve on the numbers. You were going to get an intake anyway.
http://www.jegs.com/cgi-bin/ncommerc...27&prmenbr=361
http://www.jegs.com/cgi-bin/ncommerc...27&prmenbr=361
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
i think that is a real good price it was on the top of my "real" list for crate engines.....figure it will be an additional 100 more HP then you have now.....thats base on my dynoed L48 with 142 hp at the rear wheels
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
Originally Posted by jdmick
Tell me if this is about how you calculate RWHP. I assume the 290 HP is SAE gross. If you figure 20% (?) loss from gross to net that brings it down to about 232 HP at the flywheel. Then if you figure about 15% (?) loss for the driveline for an auto you get about 197 RWHP.
What RWHP do you think I would get out of my old L48 if I rebuild it with the Performer carb and intake and hooker exhaust with a cam similar to the 12499529's and the stock heads and 9.0 CR?
What RWHP do you think I would get out of my old L48 if I rebuild it with the Performer carb and intake and hooker exhaust with a cam similar to the 12499529's and the stock heads and 9.0 CR?
77 L48 auto, advertised 180-185 hp....126 k later with headers, 2 into 1 exhaust with cat, no smog stuff... 142 Hp rear wheel
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Race Director
Joined: May 2003
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From: Science Bitch! Mississauga, Ontario
Canadian Events Coordinator
Originally Posted by Redshark6974
REAL numbers....probably not much. I'd say around 200rwhp at the most...its a good engine for a budget, but I wouldn't buy it for performance.
Les
Team Owner
Joined: Feb 2003
Posts: 30,183
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From: Lake Norman NC
Originally Posted by AGVI
He want's it because of the price, not so much the performance, so it's a perfect choice for him. I say go for it.
Les
Les
Burning Brakes
Joined: Apr 2003
Posts: 844
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From: Central KY
Shoot for these specs...
http://www.jegs.com/cgi-bin/ncommerc...29&prmenbr=361
I like the ZZ4 with 355 HP and 405 Ft-lbs. Of course it is more than twice the price of your candidate mill. Could you rebuild your stock motor for similar specs without breaking your budget? The main questions is your heads - are they up to the task...? You can pick a cam and pistons for a good price, but if you have lousy heads that will get expensive. I also like the dual-plane RPM Air-Gap as does Hot Rod magazine.
I like the ZZ4 with 355 HP and 405 Ft-lbs. Of course it is more than twice the price of your candidate mill. Could you rebuild your stock motor for similar specs without breaking your budget? The main questions is your heads - are they up to the task...? You can pick a cam and pistons for a good price, but if you have lousy heads that will get expensive. I also like the dual-plane RPM Air-Gap as does Hot Rod magazine.
Thread Starter
Safety Car
Joined: Oct 2004
Posts: 3,725
Likes: 5
From: Minnesota
Thanks for the replies. Looking at Bobs77 and TedH's #'s it looks like rebuilding the old L48 just doesn't make sense when you look at $/HP. Getting 200 RWHP apparently requires different heads ($$$). Add that to the the cost of a rebuild you get well over $1600.
The HO 350 also starts to get a little expensive for me. That basically leaves me with the two basic GM engines to choose from.
One more question. Isn't it torque that counts? This is where things seem to get confusing. The base $1400 engine advertises 260 HP and 350 lbft of torque. The upgraded cam engine says 290 HP with only 326 lbft torque.
What am I missing here?
The HO 350 also starts to get a little expensive for me. That basically leaves me with the two basic GM engines to choose from.
One more question. Isn't it torque that counts? This is where things seem to get confusing. The base $1400 engine advertises 260 HP and 350 lbft of torque. The upgraded cam engine says 290 HP with only 326 lbft torque.
What am I missing here?
Le Mans Master
Joined: Mar 2002
Posts: 7,456
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From: Coming home from Luckenbach Texas
Not a bad engine for the price. The cam lift numbers are the same as the L82 cam. Replace those 76cc smog heads (later on when you have the money) and this engine would be half decent. Go for it!
Race Director
Joined: May 2003
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From: Science Bitch! Mississauga, Ontario
Canadian Events Coordinator
Originally Posted by Redshark6974
but he asked what type of real hp numbers to expect...which i took as expecting something of a performance expectation when going with a performer intake and carb. Of course its an engine for the budget buyer, but don't expect any real numbers.
true also...
Thread Starter
Safety Car
Joined: Oct 2004
Posts: 3,725
Likes: 5
From: Minnesota
That's right. Price first. Of course I want as much reliable performance as I can afford. Searching some past threads I found these articles about a buildup of the base $1400 engine.
http://www.chevyhiperformance.com/techarticles/46320/
http://www.chevyhiperformance.com/te...326/index.html
I figure with a bigger cam like they installed in part II the $1600 engine with my carb, exhaust, and a Performer intake would be fairly close except for the pocket porting and slight CR increase that added about 26 HP before the cam. Take off about 36 HP after the cam for not having porting done and that engine should put out about 300 HP and maybe 350 lbft of torque. (?) Am I dreaming here?
http://www.chevyhiperformance.com/techarticles/46320/
http://www.chevyhiperformance.com/te...326/index.html
I figure with a bigger cam like they installed in part II the $1600 engine with my carb, exhaust, and a Performer intake would be fairly close except for the pocket porting and slight CR increase that added about 26 HP before the cam. Take off about 36 HP after the cam for not having porting done and that engine should put out about 300 HP and maybe 350 lbft of torque. (?) Am I dreaming here?