[kingcobra97]

I recently bought a 97 cobra with a carbed 351w and T5 in it. It has GT40 heads, 610ish lift cam, forged pistons 10.5:1, rpm intake and I believe a 650 dp carb (iirc). Car weighs 3350~ with driver.

Just wondering what similar setups you guys have had and how fast you went.

Am I crazy to think this car can trap 116-117 in the 1/4th on motor?

 

[kingcobra97]

Car has ac and power steering.

 

[T-flow]

Should be able to, just depends on how good that cam is....

 

[Lead-Farmer]

Heads are to small.

 

[kingcobra97]

I know the heads are small. I have some alum afr 165's laying in my spare room. I know they arnt big but should work better than the gt40's.

The reason I came up with the 116-117mph is because my friend has a lightning with a whipple on it that runs 114-115 and we had a friendly run late the other night and I slowly pulled away from him.

 

[johndickjr]

I know the heads are small. I have some alum afr 165's laying in my spare room. I know they arnt big but should work better than the gt40's.

The reason I came up with the 116-117mph is because my friend has a lightning with a whipple on it that runs 114-115 and we had a friendly run late the other night and I slowly pulled away from him.

well my friends next door neighbors cousins said ok

 

[kingcobra97]

^ LOL I knew you were blocked for a good reason. Useless.

 

[NMRA P/S 5090]

unless those heads are worked that cam is a bit much for those heads. Im thinking 106/108 mph. But ive been wrong before, so let er eat!

 

[kingcobra97]

Its def a lot of cam. The car pulls super hard to 6500-6600. Which is way past normal gt40 operating rpms lol

Not sure on how stock the heads are. Im gonna try to hit the track on friday to see how it runs.

 

[NMRA P/S 5090]

sweet! Keep us posted. I bet with that small head and extra torque from the cubic inch it would dig pretty hard. Good luck!

 

[HotStreet3134]

A very good friend of mine has a '74 351w with stock crank and rods with CHP forged pistions( 10.5:1). '70 cast iron heads with 1.94/1.60 just home port/polish. .550 lift hyd roller, dual plane manifold and a 650 DP. 1 5/8" long tube MAC headers. Made 422 @ 5900 on a DTS. We haven't scaled it but we figure it's around 3100-3200lbs. Granny shifting it's been 1.62 60' [email protected] with a handful of runs. With the 60' cleaned up and leaning on it, we figure 11.40's shouldn't be an issue.

 

[kingcobra97]

A very good friend of mine has a '74 351w with stock crank and rods with CHP forged pistions( 10.5:1). '70 cast iron heads with 1.94/1.60 just home port/polish. .550 lift hyd roller, dual plane manifold and a 650 DP. 1 5/8" long tube MAC headers. Made 422 @ 5900 on a DTS. We haven't scaled it but we figure it's around 3100-3200lbs. Granny shifting it's been 1.62 60' [email protected] with a handful of runs. With the 60' cleaned up and leaning on it, we figure 11.40's shouldn't be an issue.

Sounds VERY similar to my setup. I plan to get some weight out of it this week before hitting PBIR. 3000-3100 should be very easy. It already has tubular k member, a arms and coil overs up front. If it even goes 114-115 ill be happy!

I bought the car thinking it would run low 12's @ 110ish so anything better than that is good to me!

 

[junebugfan]

My old '67 cougar bracket car went 7.40 @ 94mph/ 1.58 60' in 1/8 almost 20 years ago with 9" slick, stock bottom end 351w w/ '69 heads with my own crappy porting, stock valve sizes & a hand me down, mismatched shelf grind solid flat tappet & freaking rail rockers lol. C6 with a 9.5" 5500 Fairbanks convertor, 1 5/8" no-name headers, 3200 lbs with me in it. The 5.43 gear was a big help lol, shifted that turd at 7200 with heavy cast pistons & truck rods with ARP bolts. Ran if for years never broke it. There was a lot of home made stuff on that thing since I was making about $6 an hour back then.

 

[Bubanator]

I dont see how a 3550lb car is going to hit 117mph with those junk heads and a dual plane intake. I would be surprised if that motor made 350 to the wheels with those parts. Youre going to need like 435+rwhp to hit 117 at 3550.

 

[kingcobra97]

I dont see how a 3550lb car is going to hit 117mph with those junk heads and a dual plane intake. I would be surprised if that motor made 350 to the wheels with those parts. Youre going to need like 435+rwhp to hit 117 at 3550.

Its 3350 with driver. Not 3550. And thats what I was thinking. But maybe the car is a little lighter and/or its more like 114 and my friend was just boasting his #'s a little. Either way hopefully I find out friday.

Im thinking it makes 360ish rwhp and with the new heads it should make 400rwhp.

 

[Thomas John Butt]

Its 3350 with driver. Not 3550. And thats what I was thinking. But maybe the car is a little lighter and/or its more like 114 and my friend was just boasting his #'s a little. Either way hopefully I find out friday.

Im thinking it makes 360ish rwhp and with the new heads it should make 400rwhp.

11.30s @118 IMO possible with a good tune & 60' ....low 1.5

 

[Bubanator]

I've yet to see any 351ci Windsor make 400rwhp through a dual plane intake