I have a '69 BB w/correct hood . Can older GM aluminum hi-per intakes (like the 3933163 , or the 3886093 ) be used without modifying anything for hood clearence ? Thanks in advance , George
Hood clearence ?'s
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Re: Hood clearence ?'s
George: i'm not a c-3 expert, but i think you'd have to get out the STIHL Farm Boss and do a little creative carving of the c-3 hood in order to use a c-2 BB intake. If you ar3e hell bent on using the earlier intake, i have a c-3 hood that was modified years age for a tunnel ram and its yours if you come get it(cumberland, md.) mike- Top
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Re: Hood clearence ?'s
Thanks Mike . I would rather use the original hood , so I guess I still need measurements , info on using the intakes I mentioned . Concerning your hood offer , any pics available ? Or maybe describe the modifications ? My e mail : geopar@gvtc.com Thanks again , George- Top
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Re: Hood clearence ?'s
George-----
Neither of the manifolds that you mentioned, or any other "high rise" type manifolds, will fit under a stock 68-72 big block hood. The only 4 BARREL manifolds that will fit are the following:
1) 3919849------1968 L-36 aluminum with oval ports
2) 3937793------1968 L-36 aluminum with oval ports
3) 3947801------L1968 to 69 L-36 aluminum with oval ports
4) 3955287------1970-71 LS-5 cast iron with oval ports
5) 3969802------1970 LS-5 cast iron with oval ports (I've never seen one)
6) 3963569------1971 LS-6 aluminum with rectangular ports
7) 6263753------1972 LS-4 cast iron with oval ports
353015-------1973 LS-4 cast iron with oval ports
9) 336789-------1974 LS-4 cast iron with oval ports
10) Edelbrock Torker II-----single plane aluminum with oval portsIn Appreciation of John Hinckley- Top
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Re: Hood clearence ?'s
Thanks Joe , I knew you would know . Another question : I have as stock aluminum intake which is oval port ; but I have installed sq.port heads , can gasketing allow me to use the oval port intake on the sq.port heads ? Thanks again , geo- Top
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Re: Hood clearence ?'s
George-----
A port mis-match like this will result in lessened performance. Fortunately, if you're going to have a mismatch, you're better off with a situation in which the intake manifold has the oval port and the heads have the rectangular ports. This way, you won't get as much "de-atomization" or condensation of fuel at the intake manifold/port interface. Still, the port mismatch is so severe that a significant performance reduction will result.In Appreciation of John Hinckley- Top
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