Good Hot Rod article on torque & HP
Thread Starter
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Good Hot Rod article on torque & HP
Jan 2004 issue. Talks about what each is, how they are measured, what each does, and what to shoot for.
The old "short stroke/big bore small displacement faster than longer stroke/same bore" debate is put to bed. Some discussion on stroke vs. bore to obtain a certain displacement, and merits of each.
The article doesn't appear to be on line yet. If you don't subscribe, it's worth the newsstand price of the mag just for that article.
So, when this topic comes up in the future, all answers have to be consistent with the info in this article, or the person posting counter-claims will be cyberslapped...
(After you read the article, you might better understand the reasons GM went with the 305, even though they don't discuss that directly, and, even if you still don't agree with GM's decision...)
The old "short stroke/big bore small displacement faster than longer stroke/same bore" debate is put to bed. Some discussion on stroke vs. bore to obtain a certain displacement, and merits of each.
The article doesn't appear to be on line yet. If you don't subscribe, it's worth the newsstand price of the mag just for that article.
So, when this topic comes up in the future, all answers have to be consistent with the info in this article, or the person posting counter-claims will be cyberslapped...
(After you read the article, you might better understand the reasons GM went with the 305, even though they don't discuss that directly, and, even if you still don't agree with GM's decision...)
Supreme Member
Joined: Apr 2002
Posts: 3,552
Likes: 5
From: New Jersey
Car: 86 Corvette, 89 IROC, 1999 TA
Engine: 350, 350, LS1
Transmission: 700r4, 700r4, T-56
Axle/Gears: 3.07, 373, 4.10
sounds interstin, i'll havta check it out.. maybe someone can scan it n post it up for everyone
Senior Member
Joined: Jan 2003
Posts: 602
Likes: 0
From: San Francisco,Ca area
Hot Rod Horsepower article
You are going to have to save the pictures or copy them into adobe or something and zoom in on them because they are not quite big enough to read the writing. Sorry.
You are going to have to save the pictures or copy them into adobe or something and zoom in on them because they are not quite big enough to read the writing. Sorry.
Last edited by bes217; Dec 4, 2003 at 06:58 PM.
Junior Member
Joined: Mar 2003
Posts: 36
Likes: 0
From: Oral Springs,FL
Car: 94z28,84 3rdgen no engine,64 vette
Engine: lt1,-,350
Transmission: t56,-,m4
looks like i need glasses cant read the scans i opened them up in ap 7.0 no good all well maybe ill ust buy the mag or read it at the bookstore 
thank you htough
thank you htough 
Senior Member
Joined: Nov 2003
Posts: 586
Likes: 1
From: Gary, In USA
Car: '85 Camaro
Engine: LG4 305
Transmission: T-5
Bought the mag and read the article. A lot of focus was spent on performance in rpm range. So what determines an rpm range? How much difference is there between a street rpm range, a street/strip rpm range, and a strip only rpm range? I understand that various parts can only flow so many cfm, but how does that relate to the rpm range? Also how does the cam affect the range? How broad a range can one have?
They also said in the article there is no way to make big power on a small block without a supercharger or nitrous. So how much more does a big block weigh than a small block with a supercharger? Power to weight is an important factor also, right?
If you use a supercharger and a high rpm cam can you use the supercharger to bring back the torque lost on the bottom?
They also said in the article there is no way to make big power on a small block without a supercharger or nitrous. So how much more does a big block weigh than a small block with a supercharger? Power to weight is an important factor also, right?
If you use a supercharger and a high rpm cam can you use the supercharger to bring back the torque lost on the bottom?
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