Small block questions
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Instructor
Joined: Jun 2007
Posts: 113
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From: Austin Tx
Small block questions
I just purchased a 75 with a new small block. Here what the engine is. An 04 gm short block 300/350 4 bolt block. A edlbrock cam with gear drive and erson 1.5 roller rockers. The heads are gm cast with screw in studs and angle plugs (#8991492). ZZ4 intake and holley 650 double pump. It has a richmond super t-10 4 speed and 410 rearend.
Ok the engine has a oil leak at the oil pan. I was going to remove the engine and reseal the pan next week. Im not sure I like the gear drive. So im thinking of removing the gear drive and then started thinking of changing the cam. First I wanted to try and find out what these heads are cause I was also looking and the Edlebrock head/intake/ cam combo.
Ok the engine has a oil leak at the oil pan. I was going to remove the engine and reseal the pan next week. Im not sure I like the gear drive. So im thinking of removing the gear drive and then started thinking of changing the cam. First I wanted to try and find out what these heads are cause I was also looking and the Edlebrock head/intake/ cam combo.
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
These are great "Old School" Performance heads. The newer chamber designs are better and some of the newer heads flow better but these are good. Probably flow as good as the performer heads. If your block is a 2004 block a Roller cam might drop right in. That would be a good upgrade. I would get rid of the gear drive too!
3991492....70......350..........LT1,Came l hump,accessory holes,64cc, straight plug
3991492....70-up................over the counter,Camel hump,64cc, straight or angle plug.
3991492....70......350..........LT1,Came l hump,accessory holes,64cc, straight plug
3991492....70-up................over the counter,Camel hump,64cc, straight or angle plug.
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
