BBC Iron heads
 

I know this is not a stocker project but the question is for the BBC stock guys(or anybody who might know). I'm trying to find out the best (IYO)flowing factory iron oval port head with a gasket match-clean up the pockets and 2.19&1.88 valves, cam lift in the ..500 to .600 range,nothing special (open or closed chamber). It's for a 6000 rpm 454 street engine in a 3500lb car. Thanks Mario.

Re: BBC Iron heads
 

215 semi closed chamber.

I ran these heads on a pump gas 468 from '95 to 2007 and each time the engine was freshened, the heads were massaged a little more. Ultimately going from a 2.19/1.88 valves to a 2.25 intake valve. Best numbers in my 3880 lb. footbrake launched Chevelle were 1.28 60 foot and 10.07 @ 131.

http://i381.photobucket.com/albums/o...DSC00693-1.jpg

http://i381.photobucket.com/albums/o...r/Atco07-1.jpg

Re: BBC Iron heads
 

Nice ride 1320 and thanks for the reply.

Re: BBC Iron heads
 

I would say either a 049 or 781 head would be best. We have been 9.50s @ 3630 pounds, 1.29 60 foot on a 10.7 comp 496.

Re: BBC Iron heads
 

049 small plug head is the best. late 69 ones
Larry

Re: BBC Iron heads
 

Thanks HP and Larry- Most people agree with you- 049 and 781's. Thanks Mario.

Re: BBC Iron heads
 

I'll take a small chamber requiring little to no dome to achieve a specific compression ratio over a large chamber requiring a big dome to achieve the same compression every time.

FYI, through the end of the 2007 season when I retired my 468, there wasn't one 468 with 049/781 heads installed in a similar weight Chevelle, competing in Division 1 brackets that could run on par with my ride no mind quicker.

Matter of fact, my Chevelle ran quicker than EVERY n/a 454, 496, 502, GM's 720HP 572 and most 540's regardless of which head they ran, in a similar Chevelle here in Division 1 brackets, just saying.

BTW, the devil is in the details and the performance that HP Hunter speaks of also comes by way of a $6,000 Coan XLT 350 trans backing up that 496.;)

Just saying.:D

Re: BBC Iron heads
 

The trans cost 3000.00, just saying. I think my 10.5 comp 454 with a .560 lift flattappet and 049s @ 3720 would have run right with your 68 in the same conditions. BTW Johns red bull should run 9.3s when he gets it dialed. Just got off the dyno with Bob West's engine, can you say 1.2 60s in his 29.00 baro? :eek:

Re: BBC Iron heads
 

Ed, forgot one thing here, my customer ran consistant 9.70s in his full weight small tire nova at Atco for two years strait with my 049 heads. 505 CID.

Re: BBC Iron heads
 

I didn't forget anything, you forgot to be truthfull AGAIN in another post whose sole intent is to solicit business.

FYI, that trans sells for $4,000 - $5,000 USED...

http://classracer.com/classforum/sho...light=Coan+XLT

http://classracer.com/classforum/sho...light=Coan+XLT

http://classracer.com/classforum/sho...light=Coan+XLT

That said, don't know, don't care who your customer is, "what is full weight" and "I think" is meaningless speculation, besides it appears no one in your area has ever seen your car run, no mind back up your claims...

Per Mark Guthrie, a guy that first met HP Hunter aka Mark Jones in 2007, knows him well, and "helped him in his shops for months", "Mark has talked about his "3600 lb. Chevelle" dozens of times. I have never seen him run any of his cars, ever and I am just saying none of the locals have seen it."


Meanwhile, Bob's Chevelle runs good, it should, it's nearly 300 lbs. lighter than my '68 and has nearly 40 more cubes and I've been advising him for over a decade.;)

Again, nice to see that after 5 years, some have caught up and some have surpassed my former Chevelle's performance as is the case with the car HP Hunter speaks of, even if it took 30+ more cubes, a light weight, low drag transmission in a car that weighs nearly 300 lbs. less and last but not least a -1600' DA to do it!

Just saying.;)

BTW, the compression ratio of this 496 is at least 10.8 not the 10.7 you stated.

Just keeping it real.:D