[speedfreak78]

me and my brother are having a little disagreement on what my 78 will run in the 1/4. what do you guys think.

the combo is a fresh rebuilt th350 rebuilt with a b&m kit and shift kit,4:10 with posi, 2000 stall, 327 with lunati 2200-6400rpm with a 504 lift 9.6-1 speedpro pistons, 700 double pumper, weind axcelerator 2000-6500rpm, headers, aluminum edelbrock performer heads with 2.02 valves 64cc chambers, roller rockers,and street tires. any input will help.

 

[jlowery78]

I would guess around a 12.85

 

[speedfreak78]

what about with drag radials.

 

[Nova73J]

13.90 with drag radials. I think you need more stall.

 

[chevyIIheavy]

what is the converter rated too? example: ( 2000-2400 ) if you can get it to leave from an idle and get a decent 60 ft it may run 12.50s i would shift at 6000 rpms at least it has gear so it will keep it in the meat of the cam but im sure someone in here will disagree as well

 

[DANNO]

Only one way to really tell...................:yes:

 

[Old School]

13.40-13.60

 

[fasteddie]

You need way more converter, probably around a 4000 or a 4500!:yes:

 

[SlickVic107]

yeah high 13's to low 14's with that converter. Uncles setup is almost same. Changed converters to 3500, and it went 13.03.

 

[Dan_Lebherz]

I'd say 12.8 to 13.4, but so many variables only one way to find out. what is the vehicle weight? What is the altitude where your track is located?

 

[speedfreak78]

well i guess ill give it a try and if i dont like it then i will get a bigger stall its a little late to do anything else with the internals i wish i would have bored it and got a little higher comp pistons maybe a bigger cam.

 

[speedfreak78]

well what if i use a 3500 stall and a 125 shot of nitrous.

 

[mrtimstik]

Whatever. Just run it. Then you'll know how fast it will go.

 

[jlowery78]

What do you think it will run? What does your brother think it will run?

 

[jonsgon]

my .02 is that it will run 13.50 to 13.80's, the cam you have with the rpm range of 2200-6400 is probably speced in a 350 chevy so in your 327 it will act bigger, cause of the less stroke in the 327, more than likely in the range of 2400-6600 or there abouts

you will need at least a 2600-3000 converter with that cam

jon

 

[David_D.]

Speaking from experience, and depending on your elevation, it will take a 4.88 gear and looser converter (or nitrous) to get you into the 12's. My brother used to run a 327 with the same heads, etc. and the only way we could get it to work well was to use the 4.88 and looser converter.

This is just based on our experience. Also, we race at a higher elevation (track elevation is 2700').

 

[jason snyder]

I think all you guys are optomistic ! i see a 14.0-14.40 , my reasoning is the intake ,stall,vehicle weight,gears,cam & cubic inch . This combo doesnt really look like it will do any better than a 2.2 60ft . especially with street tires.
good luck , and keep us informed !

 

[John65ss]

Needs a lot more converter, and the cam seems big for a low compression 327. I'm going to say 13.8-14.0 @ 102 or so.

 

[NOVACA1N]

Cam is too big, carb is too big, manifold is too big, converter is too tight. Low 14's at best.

Who picked out this combo?




.

 

[speedfreak78]

either way i guess you can never go fast enough i guess ill just cross the bridge when i come to it thanks for the input.