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Old 10-07-2012, 09:39 PM
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They are supposed to 190 cc runners I can email u a pic of them but I'm using a iPhone an don't know how to upload a pic to here
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Old 10-07-2012, 09:40 PM
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Lol I figured it out
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Old 10-07-2012, 09:44 PM
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They are bow to phase 2 o34 heads
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Old 10-07-2012, 10:18 PM
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Those look like reverse flow heads. They will not work on a conventional SBC. LT-1 front distrib motors only. You can't use them, but they are not your valve/piston problem..
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Old 10-08-2012, 06:56 AM
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Here's what I think is going on as the piston is coming up on
Exhuast stroke the lifter is opening as the piston reaches tdc the valve is fully open I don't think this is correct shouldn't the valve be fully open before tdc I think I got a bad cam
??? Any help please an thanks
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Old 10-08-2012, 03:43 PM
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You do not have the crank gear correctly timed to the cam gear. Take a real close look at the multi position lower gear. Better yet get a gear with only one position.. Problem solved..
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Old 10-08-2012, 06:28 PM
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Quote:
Originally Posted by BOBCRMAN@aol.com View Post
Those look like reverse flow heads. They will not work on a conventional SBC. LT-1 front distrib motors only. You can't use them, but they are not your valve/piston problem..
Hey Bob, I never heard of that, Tell me more. Like Corvette motor, with dist behind water pump?
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Old 10-08-2012, 08:04 PM
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Ok I spoke to comp cams they said there is something diff wrong with the cam they want me to send it back to them
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Old 10-08-2012, 08:07 PM
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Thanks everone for the help...
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Old 10-08-2012, 08:16 PM
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Most SBC heads with large valves that I've seen have the intake valves about even with the deck.
Just a thought, are you certain the pistons are installed with the valve reliefs towards the intake manifold?
ssmonty
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Old 10-08-2012, 09:22 PM
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Originally Posted by Richiehd View Post
Hey Bob, I never heard of that, Tell me more. Like Corvette motor, with dist behind water pump?
Correct. The cooling system is completely different. So is front of block. No coolant thru the front/rear of the head/intake manifold.

Heads are useless on earlier blocks.

This area (Flint) was where they were originally produced and several hundred "escaped" from the factory. I have seen pipe threads tapped into the front of the heads bypassing into the intake manifold. Entire front welded up and then drilled for conventional cooling, etc. All in vain, as the heads overheat internally and won't work.
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Old 10-15-2012, 07:05 PM
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so i got it fixed it turns out i slipped the timming gear on the wrong way got everthing all back togahter adn running its a bit sluggish at low r's anything over 2500 it revs like a chainsaw i was woundring if anyone else is running bowtie heads maybe some pointers thanks
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Old 10-15-2012, 08:51 PM
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Did you install new lifters with the cam? Are you sure you are using the correct lifter for the cam (solid vs. hydraulic)? What about pushrod length? Did you install longer pushrods or did you check valve train geometry to get the correct pushrod lengths? I know these questions probably seem elementary but...................
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Old 10-15-2012, 09:03 PM
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Yes they are new lifters it was all bought as a kit push linght is correct my though is car squirters or jets or what kind of base timming these heads like
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Old 10-16-2012, 10:56 PM
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That thing has way too big of an intake valve in it for a 190cc runner..
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