I am putting together a 40 over 400 with a small dish piston and comp 292 cam. Kicking around the idea of ordering some blueprint heads. Anyone here have experience with them?
Blueprint heads.
- Thread starter Dustpan84
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I believe they are Promaxx knockoffs or took over Promaxx which used to be Patriot Performance or something..... They are a good quality bolt on head.
Regarding the heads you linked, they’ll be fine on a your 400 if you want to keep the RPM’s below 5500. If that’s the case, then pick a different cam. Now, repeat now, if you want to spin this to mid to upper 6000’s, then you need more head. A larger head will not hurt much of anything below 3k.
What is the intended use of your car?
Regarding the heads you linked, they’ll be fine on a your 400 if you want to keep the RPM’s below 5500. If that’s the case, then pick a different cam. Now, repeat now, if you want to spin this to mid to upper 6000’s, then you need more head. A larger head will not hurt much of anything below 3k.
What is the intended use of your car?
Intended use is to mainly cruise around with the family and fry some tires. Once or twice a year I might go to the 1/8 mile a few hours from me and try some bracket racing with some buddies of mine. (Never have before but wouldn't mind giving it a try)
COMP Cams K12-213-3: Magnum 292H Hydraulic Flat Tappet Camshaft Kit Lift: .501" /.501" Duration: 292°/292° RPM Range: 2500-6500 - JEGS
In order to use these camshafts in 1955-57 265ci blocks, it is necessary to machine a small groove in the rear main journal of the cam to allow oil flow to the top of the engine. Street/Strip special. Needs 3000 stall, headers, gears, at least 9.5:1 compression. Very rough idle. Operating Range...
www.jegs.com
This is the cam I have
EVERY time I hear 292 cam.
Seems like a bit much for a cruiser and not a good match for the heads.
Too much cam for a cruisier - that cam is for a 10.5:1 400 with a set of 215 or 227 heads. It's also assuming you have a hopped up intake and a set of 1 3/4 headers. Too much for what you're describing as the intended use.COMP Cams K12-213-3: Magnum 292H Hydraulic Flat Tappet Camshaft Kit Lift: .501" /.501" Duration: 292°/292° RPM Range: 2500-6500 - JEGS
In order to use these camshafts in 1955-57 265ci blocks, it is necessary to machine a small groove in the rear main journal of the cam to allow oil flow to the top of the engine. Street/Strip special. Needs 3000 stall, headers, gears, at least 9.5:1 compression. Very rough idle. Operating Range...
This is the cam I have
You're going to need a relatively large dish piston to run the 64cc head. I'd be aiming at 9.5 for static compression with 10:1 being the max for pump gas. Then a cam in the mid to upper 220's for intake duration if you're running a stockish intake. Let you your header size determine the exhaust duration. And most importantly, be sure your quench is below .050" and no less than .035".
This is the cam that was in it when I originally got it in a 350 and I was happy with the street manners. Problem was it had 305HO heads, so I'm familiar with the whole race gas thing. Should have mentioned 3500 stall and 3.73 gears.
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