drag engine questions. 383 sbc

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clutchdude
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Location: Lancaster CA.

Re: drag engine questions. 383 sbc

#16 Post by clutchdude » Wed Feb 01, 2012 11:21 am

My mistake the 550 wheel hp is in its current condition.

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spib
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Location: wenatchee, WA

Re: drag engine questions. 383 sbc

#17 Post by spib » Wed Feb 01, 2012 10:17 pm

71 chevy wrote:
Craig W. wrote:How is this engine gonig to be used? How fast is he looking to go?

he is looking to go 9.99 at 3400lbs. manual trans clutch car.

car is 80 percent drag, 20 percent other(pro touring, standing mile) for now though it is 100% drag and he wants all the power possible out of it.

i mentioned increasing the compression and that is not out as an option
ID like to see that!!!!!!
mines a well built 385 big roller, custom carb at 3105 with driver best is 10.56@128 all motor
I quess he could spray it!!!
http://www.youtube.com/user/spib43
10.56 @128 best to date


Image

71 chevy
Posts: 156
Joined: Mon Nov 02, 2009 10:23 pm

Re: drag engine questions. 383 sbc

#18 Post by 71 chevy » Wed Feb 01, 2012 11:00 pm

clutchdude wrote:My mistake the 550 wheel hp is in its current condition.
Oh, my bad. yeah, 6.004 at 112 is making some STEAM.

are the gains from gas to alky all alky or where there other changes made. it looks like some huuge gains.

also, can i ask what front shocks you are running?

71 chevy
Posts: 156
Joined: Mon Nov 02, 2009 10:23 pm

Re: drag engine questions. 383 sbc

#19 Post by 71 chevy » Wed Feb 01, 2012 11:03 pm

spib wrote:
71 chevy wrote:
Craig W. wrote:How is this engine gonig to be used? How fast is he looking to go?

he is looking to go 9.99 at 3400lbs. manual trans clutch car.

car is 80 percent drag, 20 percent other(pro touring, standing mile) for now though it is 100% drag and he wants all the power possible out of it.

i mentioned increasing the compression and that is not out as an option
ID like to see that!!!!!!
mines a well built 385 big roller, custom carb at 3105 with driver best is 10.56@128 all motor
I quess he could spray it!!!
im not really seeing it either NA

71 chevy
Posts: 156
Joined: Mon Nov 02, 2009 10:23 pm

Re: drag engine questions. 383 sbc

#20 Post by 71 chevy » Wed Feb 01, 2012 11:12 pm

ok, so the choices so far are(under 1700 assembled)

chad speier import core, full cnc 210 cc $1620
afr 210 cnc chamber only $1568
trickflow 215 cc as cast $1500

i guess the real question is, what is the best head for under $1700/pair assembled out there, in the 210cc to 220 size range

clutchdude
Posts: 165
Joined: Wed Nov 22, 2006 6:10 pm
Location: Lancaster CA.

Re: drag engine questions. 383 sbc

#21 Post by clutchdude » Thu Feb 02, 2012 1:03 am

are the gains from gas to alky all alky or where there other changes made. it looks like some huuge gains.

also, can i ask what front shocks you are running?


From gas to alky picked up 5 mph, et also dropped .5 secs

Better clutch and vacuum pump picked up .06 in the 60 ft

Front shocks at that time were cheap C/E 90/10's in a stock front suspension, only front suspension work was Global west del alum bushings

clutchdude
Posts: 165
Joined: Wed Nov 22, 2006 6:10 pm
Location: Lancaster CA.

Re: drag engine questions. 383 sbc

#22 Post by clutchdude » Thu Feb 02, 2012 1:06 am

71 chevy wrote:ok, so the choices so far are(under 1700 assembled)

chad speier import core, full cnc 210 cc $1620
afr 210 cnc chamber only $1568
trickflow 215 cc as cast $1500

i guess the real question is, what is the best head for under $1700/pair assembled out there, in the 210cc to 220 size range

I like the AFR heads, but chad will custom tailor those heads to your application...you might have to spend a few extra dollars, but probably well worth it.

71 chevy
Posts: 156
Joined: Mon Nov 02, 2009 10:23 pm

Re: drag engine questions. 383 sbc

#23 Post by 71 chevy » Thu Feb 02, 2012 11:47 am

clutchdude wrote:
From gas to alky picked up 5 mph, et also dropped .5 secs

GOOD GOD, thats a lot of gains from just changing the gas. I think Im going to try alky in MY engine. thanks for the info man.

im currently running e85 but ive heard that I can also pick up some gains going from e85 to methanol.

seancarole
Posts: 15
Joined: Wed Feb 01, 2012 9:31 pm

Re: drag engine questions. 383 sbc

#24 Post by seancarole » Fri Feb 03, 2012 9:04 am

Morning all I'm the jack arew with the bird 71 chevy is asking ???s for
It nice to have cool places and friends to find good dirt like this site and others I have found a couple deals with jesel rockers and if the good luck don't run out I'll be getting the best bang for buck I can find If any one has some thing good let me know I'm waiting on a check I thought would be here this week maybe next . If I get in the low to mid 10s I will be very happy. still need a good soft lock clutch to hint hint

clutchdude
Posts: 165
Joined: Wed Nov 22, 2006 6:10 pm
Location: Lancaster CA.

Re: drag engine questions. 383 sbc

#25 Post by clutchdude » Fri Feb 03, 2012 10:49 am

Welcome to the site.

I would say mid 10's are possible, and your drivetrain will love the soft-loc.

Here is a used soft loc link
http://www.umtrnorth.com/Forums/topic.asp?TOPIC_ID=6651

I bought my soft loc used and then had Tim Hyatt rebuild it, i also got a good deal on a new ALum. F/W from him. Also i have seen some great deals on New mcleod alum f/w's on racing junk.

I would also recommend a 10.5" versus a 11", its very hard to get the bellhousing off with a 11" clutch.

Jim

seancarole
Posts: 15
Joined: Wed Feb 01, 2012 9:31 pm

Re: drag engine questions. 383 sbc

#26 Post by seancarole » Fri Feb 03, 2012 2:52 pm

any thoughts on patriot 225 heads

clutchdude
Posts: 165
Joined: Wed Nov 22, 2006 6:10 pm
Location: Lancaster CA.

Re: drag engine questions. 383 sbc

#27 Post by clutchdude » Fri Feb 03, 2012 5:27 pm

I dont know much about them????

Except they are pretty cheap.

seancarole
Posts: 15
Joined: Wed Feb 01, 2012 9:31 pm

Re: drag engine questions. 383 sbc

#28 Post by seancarole » Sun Feb 05, 2012 6:49 pm

Anyone got any old 867 Pontiac heads they are willing to part with. I think these would be the ultimate heads for my combo and car. :bling:

clutchdude
Posts: 165
Joined: Wed Nov 22, 2006 6:10 pm
Location: Lancaster CA.

Re: drag engine questions. 383 sbc

#29 Post by clutchdude » Sun Feb 05, 2012 11:31 pm

Those are descent heads, but require some special parts to use them. Offset rocker on intake, 60/40 spacing, and a special stud girdle.

But you might be able to find some like that with all the parts on racingjunk?

There are much better heads out there today.

seancarole
Posts: 15
Joined: Wed Feb 01, 2012 9:31 pm

Re: drag engine questions. 383 sbc

#30 Post by seancarole » Mon Feb 06, 2012 6:38 pm

Found some old afr 227's with the 60 40 jesels

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