Post your 11/12 second 455 combos!

Hey Paul,.. what size cam are you using and how much compression..

 

Sorry, forgot to add that....

TA 290-08HL with solid lifters and .005 lash

Compression is around 10.1

 

462 CID
10.1 compression
stock rods
70 stage 1 ported heads
850 Holley DP modified
235 lunati cam 492 lift 238-248
TA double roller timing chain
3" Inch Torque tech exhaust flowmasters
Stock HEI with curve kit
stock rockers
adjustable push rods
3.73 gear
turbo 400
3800 stall Pro Torque
3600 lbs regal

11.78 112

 

Have one going together shortly here:
4.350" bore, Auto tec pistons ~10.3:1
Factory rods w/Arp bolts
Ported Iron heads heavy stg 1 3/8 stem valves. 280@.500"/215@.550"
Old style B4B minor porting, W std 4781 Holley 850 Dp.
Smashed up 1 7/8 headers
Old set of 1.6 poston Rockers
Isky 236/242, .550/.563, 110 lsa solid flat tappet.

Will be in my full weight 66 GS until I get around to doing the turbo nailhead.
3.55 gears, Th400, with a tight 10.5" turbo converter.
Hoping for mid 11's in street trim.

 

0.38 464 stock rods forged notched pistons 11-1 stg1 se heads mild port work sp1 intake 950 hp carb 165 roller rockers TA308s solid cam , 373 rear gears th400 4000 stall TA comp headers full exhaust ,best time 11.00 at 125 mph ..

 

Hey staged2ny , what is the weight of your car and the cfm of your cyl. heads ? Looks like you have a nice combination !

 

The car is 3700lbs with me in it , as for the heads i don't know the cfm because i never flowed them , i did the port work myself

 

Mike, what is your engine in and what does it weigh?

 

Its a 464 the car weighs 3500lb and its a 1970 gs , all steel except the hood ..

 

How about a 430 combo
11.50's all day
Best 11.47 @ 115
Best 60' 1.48
Small valve iron head
KB 107
KB Kool Runner
MT scavenger headers
3:42 gears
950 holley
275/60/15 Hoosiers drag radial
Stock HEI
3800 stall

 

Craig,..430,..very good numbers,.. how much compression are you using,.. whats the flow on them iron heads,..and what kind of car do you run with this motor...

thanks,..

 

J.Staged The 430 has 1972 heads that flow at .500 270int/170ext. They are 62cc.The CR. is 11.5. The car is a 1971 post Skylark at 3700#.

 

Good running car,.. I figured your comp. was over 11-1, good numbers on the heads, who did the port work..

Me & my son just ran his 70' post skylark at the strip just before they closed for the winter,.. using the stock 350 block and doing a Top end build on it and ran 13:24 at 102.20... A lot of work in the heads..

 

I thought I would add my combination since its quite a bit different than what is in the thread so far. I restored a 70 GS 455 convertible for my father in law and his car got all new engine parts etc. He gave me the rotating assembly that was in his car when he got it and AMP machined a block and put a performance valve job on my 70 heads. The machine work and valve job cost $1800, the rest of the parts I had left over from a prior build. I raced my car heavily in stock appearing racing from 2000 to about 2005 or so.

1971 block 0.040 sealed power pistons, left over parts from my father in laws convertible
70 cast iron heads
Stamped steel rocker, will move to 67-69 rockers this winter
10.0:1 actual
70 stock intake, ported
Ported exhaust manifolds
Norm Dihle QJ 800 cfm
Comp cam 230/241 on a 116 in at 115, ~15 vac
ATI 10, 3.73
4000 lbs with me
12.27 @ 108.4 mph, 1.64 60 on drag radials

After I ran the 12.28 the rear axle made a lot of noise, I broke the spider gears and found out the axle tubes were bent forward, the rear tires had about 3/16 toe in! I plan a few changes this winter and hope for 11.99 in good air next year!

 

my old setup was pretty impressive 464 ci 10-1 comp stage 2 ta heads, very little work on them ,288-92 cam ,qjet on a b4b with shorty headers th400 3200 stall,342 rear car was 3700lbs 72 skylark road race suspension with slicks it ran 11.3 121.my new setup is a 470 same heads with sp1 1000 cfm pro system carb 290h cam , and all else same 10.89 123 with better slicks.

 

That's not bad at all. The tight lsa's help pull air thru the unported heads. Were you turning full acc's and thru mufflers as well?

 

I like these all iron engine builds. 10/1, 15"vac, low 12's and 4000 lbs. Wow :TU:
Ray

 

Hey Craig,
your 430 was awesome as I watched at the Cordova race. You guys did much more with alot less money.
Mine as you may recall
462, ARP stud kit, stock rods and crank
Holley blue fuel pump
Stage 2 heads ported,
1050 dominator with dominator intake,
1:65 roller rockers
253 256 cam
410 gears
9.5" 4800 stall converter (way too high)
3 exhaust with X pipe exhaust runs all the way back
Full street car with full interior windshield wipers and power steering
3950 lbs with me in it.
Best run to date 11:17 @ 115mph

Craig hope you and your son are well.

 

Your car always impressed me.

 

Thanks Ray! It idles smooth and is quiet. I have two long case mufflers plus bullets behind the axle all with 2.5" exhaust. As I said before, I'm working on a few things and hope for 11.99 next year.