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Discussion Starter · #1 ·
This is the combo being put together for my 69 Chevelle,I am wondering what kind of power and ET you think it will make. ( should I decide to bring it to the track.) the car is a street criuser.
454 .030 over Speed Pro 2399 forged pistons .090 dome for closed chamber heads. appx. 9.8 to 1 compression. Eagle Rods.
3964290 closed chamber oval port heads with 2.19 intake valves 1.72 exhaust valves / bowl ported. no gasket match
Crower cam HFT .541/.517 284/290 .224/.232 112LSA with matching springs and lifters. /crane roller tip rockers.
Weind Action Plus Aluminum dual plane./ 1.75 headers/ 780 vac secondary Holley Street Avenger carb.w 1 inch 4 hole carb spacer./ HEI Dist./ 3.55 posi / 4 spd. 255-60 street tires
My machinest says 1.0 to 1.1 HP per cubic inch and near 500 lbs tq. possibly high 12 seconds ET If I can hook it Does this sound realistic for this combo?
Do you think it will have good street manners? (power brakes)
 

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Discussion Starter · #4 ·
Mr 4 Speed,
My combo may end up closer to 10 to 1 compression.
Is your 454 a street friendly drive? how are power brakes? what kind of gas?
 

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my combo,454 +30,2399sp,crower 286r ,292 ovalports,eddy rpm,850 an,turbo 350,3500 stall 4.10 rear 3600 lbs,best 0f 11.59 114,with a 1.55 60, on 28x9 et drags.footbraking.
 

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Mr 4 Speed,
My combo may end up closer to 10 to 1 compression.
Is your 454 a street friendly drive? how are power brakes? what kind of gas?
Bill,plenty of vacuum so power brakes are just fine with the wide LSA and short duration.
Very street friendly with "right now" throttle response.It peaks out at 5600-5700
93 octane for fuel.
 

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Discussion Starter · #9 ·
Thanks for the confidence builder, I am sold!
I let my machinest talk me out of using my 049 heads with - 18 cc Probe pistons, and Lunati 60211 hyd.roller. He went a totaly different direction than I had anticipated.
He asks me, " Why would you want to use those heads & pistons when you also have a set of 290's.
I can get you more torque with the 290's. and you do not need a roller for what you want to do, save your money, they don't rev anyway. He than says, trust me Im old school, but I know what I am doing, Ive been at this for a long time, I will build you something that is strong and will last. You will be very happy. He is about 60 years old, he says he has built countless 454's in his day. He is a true old schooler.
By the way he also suggests a double pumper for added response, I will most likely pass on that for now.
I have committed to his combo. We will do it his way, he is the expert not me.
He is a true old school Chevy guy.
I love his 62 Impala with the 409 in it.
 
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