Imo000

I hate to rain on your parade, but the overhead cam engines predate the pushrods buy at least a few decades. They were invented before the pushrod engine. The pushrods have their advantages. Lower centre of gravity, lighter, simple in design and they are extremely robust. The fact that even the new C6 uses a pushrod motor is a true testament of how good the original design really is. On the other hand they have there draw back too, but for some reason everyone focuses on the negatives. I’m sure the 928 engines have just as much flaws as the SBC.

Imo000

I disagree. The last generation of Trans Ams to me are actually very nice. I don’t really care what “type” of guys drive them. I didn’t buy my 928 to fit into a certain type. I bought it because I liked both, the looks and performance. 7 years ago (while I still had my ’83 928), I’ve decided to buy a ’93 T/A. The deciding factor was the performance figures vs. price, and it was a bargain. Since there aren’t many last gen. F-bodies in Ontario, I didn’t have to worry about getting labelled as a “Gino”.

FBIII

Imo00, you areabsolutely correct. First 4 valve double overhead cam engine was a 1 1/2 liter Aston Martin engine from the teens, as in 1913ish.

Fogey1

Jim_H wrote:
"I'm one of the 'who cares' crowd. ... I love my Porsche's for reasons other than speed, they are classy, fun, well built, beautiful, incredibly stable at high speed, corner like a much smaller car etc.etc.etc. I love Sharks for what they are, and don't worry about what they aren't."

I'm with you. "Folks are thirsty in Atlanta and there's beer in Texarkana ..." Have him try that one with you and, remember, no interstates. ;-)

Or Chicago to Seattle. In either race, part of the deal is to get out of the car and stand up straight at the end.

Fogey1

Imo000 wrote:
"I hate to rain on your parade, but the overhead cam engines predate the pushrods buy at least a few decades. They were invented before the pushrod engine. ..."

I know DOHC was very early but I don't think that's right. The first internal combustion engines weren't even OHV. And I'm betting sidevalve flatheads predated OHC'

http://en.wikipedia.org/wiki/Cam-in-block

http://en.wikipedia.org/wiki/Single_overhead_cam says that Fiat had the first DOHC in 1912.

Lot's great animations if you look around in wiki.

ztnedman1

Intresting. Has to be the difference in drivers. These cars arent that different from each other so that would explain it.

Imo000

What would also explain your encounter is that the car you ran against was just a look-a-like SS or WS6. Nothing more than a V6 Camaro/Firebird that looked like the Ram Air V8. The 3800 V6s are a lot slower than the LS1 but still pretty quick when compared to an average car. So a V6 with a 4.10 rear end could give a 951 a really good race.

Lance J

what????????????? ohh hell no a v6 camaro can't a simple chip and maf upgrade puts it ahead of a 350z. the 951's 3rd is sick. no way in hell a v6 camaro could out run a 951. maybe of the lauch until 20 mph

m21sniper

Regardless unless the driver is a moron a stock 951 is not keeping up with a SS Z28 or WS6 T/A.

They're both 13.2 second cars with a 160+mph top end.

Imo000

Yes, but flat heads are not what we are comparing the DOHC to. It’s the SBC (OHC pushrod) vs. the DOHC engine and in that case the DOHC is a lot older design that the OHC pushrod V8. Not that it really matters.

Imo000

Who said anything about ahead? My theory was that the car he raced was probably a V6 with the SS or WS6 spoiler package and not a real V8. A stock 951 WILL NOT beat the LS1 powered F-body, it would not beat the LT1 powered F-body either in a straight line.
As for the all mightily 350Zand G35 goes, I had many of them beat on the highway and from a stop (all I had was a chip set, nothing more). The G35 coupe is a very nice car, I love the sounds of the tail pipe and one day I’ll probably even buy one. However they should be faster to live up to their image.

Lance J

okay stock to stock yes it wont over power a ls1. but with minor i mean minor bolt the 951 would hand any unboosted 928 or ls1. 320rwhp is very very within reach without breaking the budget.
but honestly what posters 951 is stock that whats to go fast. if your racing your gonna mod it. and if you never gonna mod your 951 then your not into going faster than ***-bodies and 350zzzzzzzzzz.

Imo000

Lance, Apples to apples man. What do you consider “without breaking the budget”? $2500, $3000, $4000 or more? Let’s say $3000 in engine upgrades (Turbo, Intercooler and boost controller maybe even a waste gate) on a 951 will get you there. Now spend the same amount on the car you want to compare it with (a Camaro or T/A in this case). Do you still think the 951 will be faster? I wouldn’t.

Lance J

okay heres the link to the thread he still running stock turbo
https://rennlist.com/forums/showthre...&highlight=ws6

heres the link to his video site
http://www.forcedinduction.net/videos-main/
i think hes not so bright for not block his plates and face but nonetheless he has a k26/6 with some work but for a stock turbo to take a modded ls1 is pretty good

Malibu310

I had three of the new Firebirds... great cars for the money... drive them hard and they dont squeak after a while, unlike many other American cars... strong like our 928's. Did you know what they used to benchmark the braking? They wanted to equal the 928! With the traction control and Blizzacks they are even great in the snow... however...

They still are not the material quality of the 928... steel that will eventually rust, plastic doors and fenders, and teh interior materials will look 30 years old far before their time... that's why I now have 928's instead of Firebirds