Compare these 2

Pistol Pete · 03-09-2014, 09:34 AM

I want to compare these 2:

305 Stocker Motors: 1. Has a Carb QJ 207 2. Has Fuel Inj. TPI set-up

Just let's say both have the same H.P.

Carb motor goes 112 mph TPI goes only 109 . WHY ???

Should the shift points be different on the TPI motor ??
If so, Higher or Lower than the Carb Motor ??
Should the Stall on the Converter be Different ? Higher or Lower ?

What other things can make the TPI get some MPH ??
60 foot times are very close to being the same too.

James Perrone · 03-09-2014, 09:43 AM

U need a carburetor..lol

pbp1 · 03-09-2014, 10:46 AM

CFM of a Q-jet vs CFM of a TPI throttle body.

Ed Wright · 03-09-2014, 10:50 AM

Quote:

Originally Posted by pbp1

CFM of a Q-jet vs CFM of a TPI throttle body.

And those long, small intake tubes. Like really long header primaries. Those TPI engines don't run up high. Take some gear out of the TPI car and it will likely run quicker too. On my chassis dyno, I never saw one that wasn't done by about 5500 RPM.

ken robinson · 03-09-2014, 11:10 AM

Pete , were are your shift rpms (5500 ?) , think about what Ed stated , get some primary addons to make those tubes longer . .If you already have tethers made you can always sale them .

Signman · 03-09-2014, 11:51 AM

Pete
Two completely different animals.

03-09-2014, 09:34 AM	#1
Pistol Pete VIP Member Join Date: Oct 2003 Location: Punta Gorda Isles, Fl. Posts: 1,622 Likes: 3,355 Liked 770 Times in 207 Posts	Compare these 2 I want to compare these 2: 305 Stocker Motors: 1. Has a Carb QJ 207 2. Has Fuel Inj. TPI set-up Just let's say both have the same H.P. Carb motor goes 112 mph TPI goes only 109 . WHY ??? Should the shift points be different on the TPI motor ?? If so, Higher or Lower than the Carb Motor ?? Should the Stall on the Converter be Different ? Higher or Lower ? What other things can make the TPI get some MPH ?? 60 foot times are very close to being the same too. __________________ "Pistol" Pete Dutko

03-09-2014, 09:43 AM	#2
James Perrone VIP Member Join Date: Feb 2004 Location: LONG ISLAND N.Y. Posts: 1,668 Likes: 3,348 Liked 1,803 Times in 422 Posts	Re: Compare these 2 U need a carburetor..lol __________________ james perrone 1290 STK

03-09-2014, 10:46 AM	#3
pbp1 Junior Member Join Date: Mar 2013 Posts: 80 Likes: 12 Liked 27 Times in 6 Posts	Re: Compare these 2 CFM of a Q-jet vs CFM of a TPI throttle body.

03-09-2014, 11:10 AM	#5
ken robinson Member Join Date: Dec 2001 Location: tomsriver nj Posts: 477 Likes: 72 Liked 213 Times in 85 Posts	Re: Compare these 2 Pete , were are your shift rpms (5500 ?) , think about what Ed stated , get some primary addons to make those tubes longer . .If you already have tethers made you can always sale them .

03-09-2014, 11:51 AM	#6
Signman Senior Member Join Date: Oct 2003 Location: Lower Slower Delaware Posts: 535 Likes: 22 Liked 269 Times in 99 Posts	Re: Compare these 2 Pete Two completely different animals. __________________ Frank Ferrucci I/SA 1271 "Be Thankful for the Gifts You are Given"